tag:blogger.com,1999:blog-88152339896114877382011-08-01T17:21:51.049-03:00Emilionoreply@blogger.comBlogger4871100tag:blogger.com,1999:blog-8815233989611487738.post-87020407773094421852010-10-24T23:42:00.003-03:002010-10-24T23:56:31.479-03:00Bienvenido/a al sitio, en el que encontrarás abundante información sobre el apasionante mundo de la Electrónica, este espacio se mantiene en constante actualización, por lo que no podes dejar de visitarlo, los temas que por el momento se encuentran disponibles son los siguientes:<br /><br /><span style="font-weight: bold;">Teoría de Electrónica</span><br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/analisis-de-circuitos-por-el-metodo-de.html">Análisis de Circuitos por el Método de Mallas</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/analisis-de-circuitos-por-el-metodo-de_24.html">Analisis de Circuitos por el Metodo de Tensiones en los Nudos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/analisis-de-circuitos-por-variables-de.html">Analisis de Circuitos por Variables de Rama</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/elementos-ideales.html">Elementos Ideales</a></li> <li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/elementos-reales.html">Elementos Reales</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/energia-y-potencia.html">Energía y Potencia</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/formas-de-onda.html">Formas de Onda</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/teoremas-utilizados-en-teoria-de.html">Teoremas Utilizados en Teoria de Circuitos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/teoria-de-circuitos.html">Teoría de Circuitos</a></li></ul><span style="font-weight: bold;">Circuitos</span><span style="font-weight: bold;"> y Esquemas</span><br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-alarma-y-seguridad.html">Circuitos de Alarma y Seguridad</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-amplificadores.html">Circuitos de Amplificadores</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-amplificadores_24.html">Circuitos de Amplificadores Instrumentales</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-atenuadores.html">Circuitos de Atenuadores</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-audio.html">Circuitos de Audio</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-comparadores.html">Circuitos de Comparadores</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-computacion.html">Circuitos de Computación</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-control-remoto.html">Circuitos de Control Remoto</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-conversores-ad.html">Circuitos de Conversores AD</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-convertidores.html">Circuitos de Convertidores</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-decodificadores.html">Circuitos de Decodificadores</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-display.html">Circuitos de Display</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-fibra-optica.html">Circuitos de Fibra Optica</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-filtros.html">Circuitos de Filtros</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-fotografia.html">Circuitos de Fotografia</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-frecuencia.html">Circuitos de Frecuencia</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-fuentes-de-corriente.html">Circuitos de Fuentes de Corriente</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-indicadores.html">Circuitos de Indicadores</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-infrarojo.html">Circuitos de Infrarojo</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-intercomunicacion.html">Circuitos de Intercomunicación</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-juegos.html">Circuitos de Juegos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-linea-electrica.html">Circuitos de Línea Eléctrica</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-luces.html">Circuitos de Luces</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-modelismo.html">Circuitos de Modelismo</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-osciloscopio.html">Circuitos de Osciloscopio</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-telefonia.html">Circuitos de Telefonía</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/circuitos-de-voz.html">Circuitos de Voz</a></li></ul><span style="font-weight: bold;">Componentes Electrónicos</span><br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2010/10/resistencias.html">Resistencias</a></li></ul>Estos mismas secciones se encuentran, en todo momento, en el menú disponible a la derecha para una navegación más cómoda.<br /><br />Espero que sea de tu agrado.<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8702040777309442185?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-89117792509229954042010-10-24T23:33:00.003-03:002010-10-24T23:33:33.585-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/introduccin.html">Introducción</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/el-circuito-elctrico-elementos.html">El Circuito Eléctrico; Elementos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/concepto-de-carga-corriente-tensin-y.html">Concepto de Carga, Corriente, Tensión y Potencia</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/unidades-y-convenios-de-polaridad.html">Unidades y Convenios de Polaridad</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/clasificacin-de-los-circuitos.html">Clasificación de los Circuitos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/estudio-de-los-circuitos-anlisis.html">Estudio de los Circuitos: Análisis, Síntesis y Diseño</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/leyes-experimentales-ley-de-ohm-lemas.html">Leyes Experimentales: Ley de Ohm. Lemas de Kirchhoff</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/circuitos-simples-circuito-serie.html">Circuitos Simples: Circuito Serie. Circuito Paralelo</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8911779250922995404?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-63353431443069031492010-10-24T23:33:00.001-03:002010-10-24T23:33:12.801-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/introduccin_05.html">Introducción</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/principio-de-superposicin.html">Principio de Superposición</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/teorema-de-helmholtz-thevenin.html">Teorema de Helmholtz-Thevenin</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/teorema-de-helmholtz-norton.html">Teorema de Helmholtz-Norton</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/teorema-de-millman.html">Teorema de Millman</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/teorema-de-rosen.html">Teorema de Rosen</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/teorema-de-reciprocidad.html">Teorema de Reciprocidad</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/regla-de-sustitucin-teorema-de-miller.html">Regla de Sustitución. Teorema de Miller</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/teorema-de-compensacin.html">Teorema de Compensación</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6335343144306903149?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-46376870235118293452010-10-24T23:32:00.003-03:002010-10-24T23:32:50.084-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/codigo-de-colores.html">Codigo de colores</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4637687023511829345?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-89639244423090879672010-10-24T23:32:00.001-03:002010-10-24T23:32:30.139-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/introduccin_12.html">Introducción</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/formas-de-onda-bsicas.html">Formas de Onda Básicas</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/consideraciones-comunes-las-ondas.html">Consideraciones Comunes a las Ondas</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/ondas-peridicas.html">Ondas Periódicas</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8963924442309087967?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-63974879666000402732010-10-24T23:31:00.004-03:002010-10-24T23:32:11.707-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/introduccion_24.html">Introduccion</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/potencia-y-energa-en-un-dipolo.html">Potencia y Energía en un Dipolo</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/energa-y-potencia-en-los-elementos-de.html">Energía y Potencia en los Elementos de los Circuitos</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6397487966600040273?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-21016664419785286302010-10-24T23:31:00.003-03:002010-10-24T23:31:44.476-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/elementos-activos.html">Elementos Activos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/elementos-pasivos_19.html">Elementos Pasivos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/conceptos-de-impedancia-y-admitancia.html">Conceptos de Impedancia y Admitancia Operacional</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/asociacin-de-elementos-activos.html">Asociación de Elementos Activos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/asociacin-de-elementos-pasivos.html">Asociación de Elementos Pasivos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/inmitancias-operacionales-asociacin.html">Inmitancias Operacionales. Asociación</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/configuraciones-equivalentes.html">Configuraciones Equivalentes</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2101666441978528630?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-23472268414929476502010-10-24T23:31:00.001-03:002010-10-24T23:31:25.678-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/introduccion.html">Introduccion</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/fuentes-independientes.html">Fuentes Independientes</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/elementos-pasivos.html">Elementos Pasivos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/fuentes-dependientes.html">Fuentes Dependientes</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/asociacin-de-fuentes-ideales.html">Asociación de Fuentes Ideales</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/otras-asociaciones.html">Otras Asociaciones</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2347226841492947650?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-61562185475139734992010-10-24T23:30:00.004-03:002010-10-24T23:31:01.060-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/scanner-voice-squelch.html">Scanner Voice Squelch</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-voice-substitute.html">Electronic Voice Substitute</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/computer-speech-synthesizer.html">Computer Speech Synthesizer</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/allophone-generator.html">Allophone Generator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/ac-line-voltage-announcer.html">AC-Line Voltage Announcer</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6156218547513973499?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-5845216985308159582010-10-24T23:30:00.003-03:002010-10-24T23:30:44.625-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/wireless-telephone-eavesdropper.html">Wireless Telephone Eavesdropper</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-tone-ringer.html">Telephone Tone Ringer</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-tap.html">Telephone Tap</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-ringing-detector-frequency.html">Telephone Ringing Detector, Frequency And Volume Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-ringer-uses-piezoelectric.html">Telephone Ringer Uses Piezoelectric Device</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-line-in-use-indicator-2.html">Telephone Line In Use Indicator 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-line-in-use-indicator.html">Telephone Line In Use Indicator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-line-tester.html">Telephone Line Tester</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-intercom.html">Telephone Intercom</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-hold-circuit.html">Telephone Hold Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-controlled-night-light.html">Telephone Controlled Night Light</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/telephone-blinker.html">Telephone Blinker</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/simple-touch-tone-generator.html">Simple Touch Tone Generator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/scramble-phone.html">Scramble Phone</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/ringer-relay.html">Ringer Relay</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/portable-tone-generator.html">Portable Tone Generator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/phone-recorder.html">Phone Recorder</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/phone-light.html">Phone Light</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/music-on-hold-box.html">Music On Hold Box</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/music-on-hold.html">Music On Hold</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/hands-free-telephone.html">Hands Free Telephone</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/extension-phone-ringer.html">Extension Phone Ringer</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-phone-bell.html">Electronic Phone Bell</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-584521698530815958?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-70263036225702563282010-10-24T23:30:00.001-03:002010-10-24T23:30:26.947-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/simple-spectrum-analyzer-adapter-for.html">Simple Spectrum Analyzer Adapter For Scopes</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/scope-calibrator.html">Scope Calibrator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/oscilloscope-counter-preamp.html">Oscilloscope Counter Preamp</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/oscilloscope-monitor.html">Oscilloscope Monitor</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/oscilloscope-calibrator.html">Oscilloscope Calibrator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/four-trace-oscilloscope-adapter.html">Four Trace Oscilloscope Adapter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/fet-dual-trace-scope-switch.html">FET Dual Trace Scope Switch</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7026303622570256328?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-15893195506557082402010-10-24T23:29:00.006-03:002010-10-24T23:30:08.503-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/model-train-throttle-control.html">Model Train Throttle Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/model-rocket-launcher.html">Model Rocket Launcher</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-1589319550655708240?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-24817003838538600362010-10-24T23:29:00.005-03:002010-10-24T23:29:54.339-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/zero-point-switch.html">Zero Point Switch</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/three-way-touch-lamp.html">Three Way Touch Lamp</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/three-power-level-triac-controller.html">Three Power Level Triac Controller</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/sensitive-triac-controller.html">Sensitive Triac Controller</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/light-modulator.html">Light Modulator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/light-controller.html">Light Controller</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/led-brightness-control.html">LED Brightness Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/dc-lamp-dimmer.html">DC Lamp Dimmer</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/automatic-light-controller-for-carport.html">Automatic Light Controller For Carport</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/120-ac-shimmering-light.html">120 AC Shimmering Light</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/strobe-alarm.html">Strobe Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/series-scr-lamp-flasher-handles-wide.html">Series SCR Lamp Flasher Handles a Wide Range Of Loads</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/sequential-led-flasher-with-reversible.html">Sequential Led Flasher With Reversible Direction</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-frequency-lamp-flasherrelay-driver.html">Low Frequency Lamp Flasher/Relay Driver</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/flash-signal-alarm.html">Flash Signal Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/dark-activated-led-flasher.html">Dark Activated Led Flasher</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/alternating-led-flasher.html">Alternating Led Flasher</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/3-channel-color-organ.html">3 Channel Color Organ</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/variable-strobe-light.html">Variable Strobe Light</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/disco-strobe-light.html">Disco Strobe Light</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2481700383853860036?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-5924900938217206932010-10-24T23:29:00.003-03:002010-10-24T23:29:37.589-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/carrier-current-fm-receiver.html">Carrier Current FM Receiver</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/carrier-current-baby-alert-transmitter.html">Carrier Current Baby Alert Transmitter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/carrier-current-baby-alert-receiver.html">Carrier Current Baby Alert Receiver</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/carrier-current-audio-transmitter.html">Carrier Current Audio Transmitter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/carrier-current-am-receiver.html">Carrier Current AM Receiver</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-592490093821720693?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-75975644432579274942010-10-24T23:29:00.001-03:002010-10-24T23:29:22.750-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/simple-lie-detector.html">Simple Lie Detector</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/quiz-master.html">Quiz Master</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-cost-heads-or-tails.html">Low Cost "Heads or Tails"</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/game-roller-or-chase-circuit.html">Game Roller or Chase Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-roulette-game.html">Electronic Roulette Game</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-dice.html">Electronic Dice</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-coin-tosser.html">Electronic Coin Tosser</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7597564443257927494?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-49881120835110863222010-10-24T23:28:00.006-03:002010-10-24T23:29:07.093-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/two-way-intercom.html">Two Way Intercom</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/party-line-intercom.html">Party Line Intercom</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/one-way-voice-activated-intercom.html">One Way, Voice Activated Intercom</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/intercom-2.html">Intercom 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/intercom.html">Intercom</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/hands-off-intercom.html">Hands Off Intercom</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4988112083511086322?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-3641415120659587122010-10-24T23:28:00.005-03:002010-10-24T23:28:48.071-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/wireless-ir-headphone-transmitter.html">Wireless IR Headphone Transmitter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/wireless-ir-headphone-receiver.html">Wireless IR Headphone Receiver</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/remote-loudspeaker-via-ir-link.html">Remote Loudspeaker Via IR Link</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/ir-pulse-to-audio-converter.html">IR Pulse to Audio Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/ir-type-data-link.html">IR Type Data Link</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/ir-remote-extender.html">IR Remote Extender</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/ir-reflection-proximity-switch.html">IR Reflection Proximity Switch</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/ir-receiver.html">IR Receiver</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/invisible-infrared-pulsed-laser-rifle.html">Invisible Infrared Pulsed Laser Rifle</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/infrared-wireless-speaker-system.html">Infrared Wireless Speaker System</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/infrared-transmitter.html">Infrared Transmitter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/infrared-remote-controller.html">Infrared Remote Controller</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/infrared-remote-control-tester.html">Infrared Remote Control Tester</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-364141512065958712?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-7405141026167626502010-10-24T23:28:00.003-03:002010-10-24T23:28:29.447-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/visual-zero-beat-indicator.html">Visual Zero Beat Indicator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/visible-voltage-indicator.html">Visible Voltage Indicator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/ten-step-voltage-level-indicator.html">Ten Step Voltage Level Indicator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/sound-sensor.html">Sound Sensor</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/five-step-voltage-level-indicator.html">Five Step Voltage Level Indicator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/beat-frequency-indicator.html">Beat Frequency Indicator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/acdc-indicator.html">AC/DC Indicator</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-740514102616762650?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-6088905172456943372010-10-24T23:28:00.001-03:002010-10-24T23:28:14.270-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/precision-current-source.html">Precision Current Source</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/precision-current-sink.html">Precision Current Sink</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/precision-1ua-to-1ma-current-sources.html">Precision 1uA to 1mA Current Sources</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/current-source-for-low-resistance.html">Current Source for Low Resistance Measurements</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/current-source.html">Current Source</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-608890517245694337?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-9719330910460744042010-10-24T23:27:00.005-03:002010-10-24T23:27:58.025-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/frequencyvoltage-converter.html">Frequency/Voltage Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/frequency-to-voltage-converter.html">Frequency to Voltage Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/low-frequency-divider.html">Low Frequency Divider</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/frequency-doubler-works-to-1mhz.html">Frequency Doubler Works to 1Mhz</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/frequency-doubler.html">Frequency Doubler</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/frequency-divider.html">Frequency Divider</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/divide-by-1-12-circuit.html">Divide by -1 1/2 Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/broadband-frequency-doubler.html">Broadband Frequency Doubler</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-971933091046074404?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-10287782856338361782010-10-24T23:27:00.003-03:002010-10-24T23:27:40.278-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/time-delay-photo-flash-trigger.html">Time Delay Photo Flash Trigger</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/time-delay-flash-trigger-circuit.html">Time Delay Flash Trigger Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/sound-triggered-flash.html">Sound Triggered Flash</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/photo-event-timer.html">Photo Event Timer</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/flash-meter.html">Flash Meter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/darkroom-enlarger-timer.html">Darkroom Enlarger Timer</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-1028778285633836178?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-4650912106626398302010-10-24T23:27:00.001-03:002010-10-24T23:27:21.169-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/wideband-two-pole-high-pass-filter.html">Wideband Two Pole High Pass Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/variable-q-filter-for-400hz.html">Variable Q Filter For 400Hz</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/variable-bandwidth-bandpass-active.html">Variable Bandwidth Bandpass Active Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/variable-bandpass-audio-filter.html">Variable Bandpass Audio Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/tunable-audio-filter.html">Tunable Audio Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/three-amplifier-notch-filter.html">Three Amplifier Notch Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/speech-filter-300hz-3khz-bandpass.html">Speech Filter (300Hz - 3kHz Bandpass)</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/simple-high-pass-active-filter-for-1khz.html">Simple High Pass Active Filter For 1kHz</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/second-order-low-pass-filter-for-10khz.html">Second Order Low Pass Filter For 10kHz</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/second-order-100hz-high-pass-filter.html">Second Order 100Hz High Pass Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/scratch-filter-using-lm387.html">Scratch Filter Using LM387</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/rumble-filter-using-lm387.html">Rumble Filter Using LM387</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/razor-sharp-cw-filter.html">Razor Sharp CW Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/multiple-feedback-bandpass-filter.html">Multiple Feedback Bandpass Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/multiple-feedback-bandpass-filter-10khz.html">Multiple Feedback Bandpass Filter (1.0kHz)</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/high-pass-active-filter.html">High Pass Active Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/high-q-notch-filter-2.html">High Q Notch Filter 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/high-q-notch-filter.html">High Q Notch Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/full-wave-rectifieraveraging-filter.html">Full Wave Rectifier/Averaging Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/fourth-order-high-pass-butterworth.html">Fourth Order High Pass Butterworth Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/four-output-filter.html">Four Output Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/biquad-rc-active-bandpass-filter.html">Biquad RC Active Bandpass Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/bandpass-and-notch-filter.html">Bandpass And Notch Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/adjustable-q-notch-filter.html">Adjustable Q Notch Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/active-bandpass-filter.html">Active Bandpass Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/45mhz-notch-filter.html">4.5Mhz Notch Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/300-3400hz-second-order-speech-filter.html">300-3400Hz Second Order Speech Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/20khz-bandpass-active-filter.html">20kHz Bandpass Active Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/160hz-bandpass-filter.html">160Hz Bandpass Filter</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-465091210662639830?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-75682366715939640012010-10-24T23:26:00.006-03:002010-10-24T23:27:02.065-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/fiberoptic-interface.html">Fiberoptic Interface</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/fiber-optic-receiver-high-sensitivity_02.html">Fiber Optic Receiver, High Sensitivity, 2uW</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/fiber-optic-receiver-high-sensitivity.html">Fiber Optic Receiver, High Sensitivity, 30NW</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/fiber-optic-link.html">Fiber Optic Link</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/50mbs-fiber-optic-led-driver.html">50Mb/s Fiber Optic Led Driver</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/10mhz-fiberoptic-receiver.html">10Mhz Fiberoptic Receiver</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7568236671593964001?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-73233155887333102692010-10-24T23:26:00.005-03:002010-10-24T23:26:46.558-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-frequency-prescaler.html">Low Frequency Prescaler</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/10mhz-frequency-counter.html">10Mhz Frequency Counter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/12ghz-frequency-counter.html">1.2Ghz Frequency Counter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/large-lcd-display-buffering-driver.html">Large LCD Display Buffering Driver</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/expanded-scale-meter-dot-or-bar.html">Expanded Scale Meter, Dot or Bar</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/exclamation-point-display.html">Exclamation Point Display</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/bar-display-with-alarm-flasher.html">Bar Display With Alarm Flasher</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7323315588733310269?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-28805597665513918882010-10-24T23:26:00.003-03:002010-10-24T23:26:29.449-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/sine-wave-descrambler.html">Sine Wave Descrambler</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/second-audio-program-adapter.html">Second Audio Program Adapter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/outband-descrambler.html">Outband Descrambler</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/gated-pulse-descrambler.html">Gated Pulse Descrambler</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/direction-detector-decoder.html">Direction Detector Decoder</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2880559766551391888?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-56915260324498552862010-10-24T23:26:00.001-03:002010-10-24T23:26:12.473-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/voltage-to-pulse-duration-converter.html">Voltage to Pulse Duration Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/voltage-to-current-converter-2.html">Voltage to Current Converter 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/voltage-to-current-converter.html">Voltage to Current Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/vlf-converter.html">VLF Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/temperature-to-frequency-converter-2.html">Temperature to Frequency Converter 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/temperature-to-frequency-converter.html">Temperature to Frequency Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/sine-wave-square-wave-converter.html">Sine Wave / Square Wave Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/shortwave-converter-for-am-car-radios.html">Shortwave Converter for AM Car Radios</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/power-voltage-to-current-converter.html">Power Voltage to Current Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/positive-to-negative-converter.html">Positive to Negative Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/pin-photodiode-to-frequency-converter.html">Pin Photodiode to Frequency Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/period-to-voltage-converter.html">Period to Voltage Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/one-chip-crystal-controlled-converter.html">One Chip Crystal Controlled Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/ohms-to-volts-converter.html">Ohms to Volts Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-noise-420mhz-atv-receiverconverter.html">Low Noise 420Mhz ATV Receiver/Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-frequency-converter.html">Low Frequency Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/light-intensity-to-frequency-converter.html">Light Intensity to Frequency Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/dcdc-converter-circuit-with-33-and-5v.html">DC/DC Converter Circuit With 3.3 and 5V Outputs</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/dcdc-converter.html">DC/DC Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/capacitance-to-pulse-width-converter.html">Capacitance to Pulse Width Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/atv-downconverter.html">ATV Downconverter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/9-to-5v-converter.html">9 to 5V Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/800-to-1000mhz-scanner-converter.html">800 to 1000Mhz Scanner Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/3a-dc-dc-converter-needs-no-heatsink.html">3A DC-DC Converter Needs No Heatsink</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/1-to-5v-dcdc-converter.html">1 to 5V DC/DC Converter</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-5691526032449855286?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-41476663269288190152010-10-24T23:25:00.005-03:002010-10-24T23:25:52.399-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/three-decade-logarithmic-ad-converter.html">Three Decade Logarithmic A/D Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/inexpensive-fast-10-bit-serial-output.html">Inexpensive Fast 10 Bit Serial Output A/D</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/cyclic-ad-converter.html">Cyclic A/D Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/4-digit-10000-count-ad-converter.html">4 Digit (10000 Count) A/D Converter</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4147666326928819015?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-48959676946247011522010-10-24T23:25:00.003-03:002010-10-24T23:25:34.250-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/ultrasonic-remote-control-receiver.html">Ultrasonic Remote Control Receiver</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/remote-control-transmitter.html">Remote Control Transmitter</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4895967694624701152?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-84055299679608208852010-10-24T23:25:00.001-03:002010-10-24T23:25:18.426-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/switch-debouncer-with-auto-repeat.html">Switch Debouncer With Auto Repeat</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stalled-output-detector.html">Stalled Output Detector</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/printer-error-alarm.html">Printer Error Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/buffer-i-squared-c-data-and-clock-lines.html">Buffer I Squared C Data and Clock Lines</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8405529967960820885?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-23657574639801947732010-10-24T23:24:00.001-03:002010-10-24T23:24:58.616-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/window-comparator.html">Window Comparator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/undervoltageovervoltage-indicator.html">Undervoltage/Overvoltage Indicator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/noninverting-comparator-with-hysteresis.html">Noninverting Comparator With Hysteresis</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-power-comparator-with-less-than.html">Low-Power Comparator With Less Than 10mV Hysteresis</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/limit-comparator.html">Limit Comparator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/inverting-comparator-with-hysteresis.html">Inverting Comparator With Hysteresis</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/highlow-limit-alarm.html">High/Low Limit Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/diode-feedback-comparator.html">Diode Feedback Comparator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/comparator-detects-power-supply.html">Comparator Detects Power Supply Overvoltages, Catches Glitches</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2365757463980194773?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-44092543844801674632010-10-24T23:23:00.003-03:002010-10-24T23:23:54.064-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/agc-system-for-audio-signals.html">AGC System For Audio Signals</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/two-wire-to-four-wire-audio-converter.html">Two Wire To Four Wire Audio Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stereo-amplifier-with-gain-control.html">Stereo Amplifier With Gain Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/speaker-amplifier-for-hand-held.html">Speaker Amplifier For Hand Held Transceivers</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/mini-stereo.html">Mini Stereo</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/micro-sized-amplifier.html">Micro Sized Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-distortion-audio-limiter.html">Low Distortion Audio Limiter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/general-purpose-preamplifier.html">General Purpose Preamplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/audio-distribution-amplifier-2.html">Audio Distribution Amplifier 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/20db-audio-booster.html">20dB Audio Booster</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/simple-electronic-metronome.html">Simple Electronic Metronome</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/metronome-2.html">Metronome 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-metronome.html">Electronic Metronome</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/downbeat-emphasized-electronic.html">Downbeat Emphasized Electronic Metronome</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/variable-frequency-code-practice.html">Variable Frequency Code Practice Oscillator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/qrp-sidetone-generatorcode-practice.html">QRP Sidetone Generator/Code Practice Oscillator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-cw-bug-keyer.html">Electronic CW "Bug" Keyer</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/3-channel-color-organ.html">3 Channel Color Organ</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/two-door-annunciator.html">Two Door Annunciator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/sliding-tone-doorbell.html">Sliding Tone Doorbell</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-cost-chime-circuit.html">Low Cost Chime Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/door-buzzer.html">Door Buzzer</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/tremolo-2.html">Tremolo 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/tremolo.html">Tremolo</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/tremolo-circuit.html">Tremolo Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/treble-tone-control.html">Treble Tone Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/tone-control.html">Tone Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/three-band-active-tone-control.html">Three Band Active Tone Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/mike-preamp-with-tone-control.html">Mike Preamp With Tone Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/microphone-preamplifier-with-tone.html">Microphone Preamplifier With Tone Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-cost-high-level-preamp-and-tone.html">Low Cost High Level Preamp And Tone Control Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/hi-fi-tone-control-circuit-high-z-input.html">Hi-Fi Tone Control Circuit (High Z Input)</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/combined-bass-and-treble-controls.html">Combined Bass And Treble Controls</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/bass-tone-control.html">Bass Tone Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/amplifier-with-bass-boost.html">Amplifier With Bass Boost</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/extended-play-circuit.html">Extended Play Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/audio-powered-tape-recorder-controller.html">Audio Powered Tape Recorder Controller</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stereo-tv-decoder.html">Stereo TV Decoder</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stereo-preamplifier.html">Stereo Preamplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stereo-balancer.html">Stereo Balancer</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stereo-balance-tester.html">Stereo Balance Tester</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stereo-balance-meter.html">Stereo Balance Meter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/crystal-controlled-fm-stereo.html">Crystal Controlled FM Stereo Transmitter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/voltage-controlled-amplifier-or-tremolo.html">Voltage Controlled Amplifier Or Tremolo Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/unusual-fuzz.html">Unusual Fuzz</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/twang-twang-circuit.html">Twang-Twang Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/tone-chime.html">Tone Chime</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/tone-burst-generator.html">Tone Burst Generator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stereo-reverb-system.html">Stereo Reverb System</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stereo-reverb-enhacement.html">Stereo Reverb Enhacement</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-gong.html">Electronic Gong</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/spaceship-alarm.html">Spaceship Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/phasor-sound-generator.html">Phasor Sound Generator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-bird-chirper.html">Electronic Bird Chirper</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/chug-chug.html">Chug-Chug</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/canary-sound-simulator.html">Canary Sound Simulator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/autodrum.html">Autodrum</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/110db-beeper.html">110dB Beeper</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/voice-operated-switch.html">Voice Operated Switch</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/voice-activated-switch-and-amplifier.html">Voice Activated Switch And Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/sound-activated-switch.html">Sound Activated Switch</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/sound-activated-ac-switch.html">Sound Activated AC Switch</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/gain-controlled-amplifier.html">Gain Controlled Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/automatic-fader.html">Automatic Fader</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/yelp-oscillator.html">Yelp Oscillator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/whooper.html">Whooper</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/varying-frequency-warning-alarm.html">Varying Frequency Warning Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/steam-train-with-whistle.html">Steam Train With Whistle</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-cost-siren.html">Low Cost Siren</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/hee-haw-siren.html">Hee-Haw Siren</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/warble-tone-siren.html">Warble Tone Siren</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/6w-warble-tone-siren.html">6W Warble Tone Siren</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/third-order-butterworth-crossover.html">Third Order Butterworth Crossover Network</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/asymmetrical-third-order-butterworth.html">Asymmetrical Third Order Butterworth Active Crossover</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/active-crossover-network.html">Active Crossover Network</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/wien-bridge-sine-wave-oscillator.html">Wien Bridge Sine Wave Oscillator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/phase-shift-oscillator.html">Phase-Shift Oscillator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/easily-tuned-sinesquare-oscillator.html">Easily Tuned Sine/Square Oscillator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/audio-oscillator.html">Audio Oscillator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/transformerless-unbalanced-inputs.html">Transformerless (Unbalanced Inputs) Microphone Preamp</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/transformerless-balance-inputs.html">Transformerless (Balance Inputs) Microphone Preamp</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/preamplifier-with-riaanab-compensation.html">Preamplifier With RIAA/NAB Compensation</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/microphone-amplifier.html">Microphone Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-impedance-microphone-preamp.html">Low Impedance Microphone Preamp</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/general-purpose-preamp.html">General Purpose Preamp</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/audio-volume-limiter.html">Audio Volume Limiter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/audio-distribution-amplifier.html">Audio Distribution Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/audio-amplifier-with-tuneable-filter.html">Audio Amplifier With Tuneable Filter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/subwoofer-crossover-amplifier.html">Subwoofer Crossover Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/subwoofer-amplifier.html">Subwoofer Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/phono-amplifier-with-common-mode-volume.html">Phono Amplifier With Common Mode Volume And Tone Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/noninverting-amplifier-using-single.html">Noninverting Amplifier Using Single Supply</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/lm380-personal-stereo-amplifier.html">LM380 Personal Stereo Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/bridge-audio-power-amplifier.html">Bridge Audio Power Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/bridge-amplifier.html">Bridge Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/33w-bridge-composite-amplifier.html">33W Bridge Composite Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/12-w-low-distortion-power-amplifier.html">12 W Low-Distortion Power Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/audio-power-amplifier.html">Audio Power Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/two-channel-panning-circuit.html">Two Channel Panning Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/sound-mixeramplifier.html">Sound Mixer/Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-crossover-circuit.html">Electronic Crossover Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-distortion-amplifiercompressor.html">Low-Distortion Amplifier/Compressor</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/audio-fader.html">Audio Fader</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/audio-equalizer.html">Audio Equalizer</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4409254384480167463?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-70612424629087252722010-10-24T23:23:00.001-03:002010-10-24T23:23:23.297-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/voltage-controlled-attenuator.html">Voltage Controlled Attenuator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/variable-attenuator.html">Variable Attenuator</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/digitally-selectable-precision.html">Digitally Selectable Precision Attenuator</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7061242462908725272?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-24338617332951084452010-10-24T23:22:00.003-03:002010-10-24T23:22:59.457-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/triple-op-amp-instrumentation-amplifier.html">Triple Op Amp Instrumentation Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/lmc6062-instrumentation-amplifier.html">LMC6062 Instrumentation Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/lm6218-high-speed-instrumentation.html">LM6218 High Speed Instrumentation Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/level-shifting-isolation-amplifier.html">Level Shifting Isolation Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/high-stability-thermocouple-amplifier-2.html">High Stability Thermocouple Amplifier 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/high-stability-thermocouple-amplifier.html">High Stability Thermocouple Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/high-impedance-bridge-amplifier.html">High Impedance Bridge Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/high-gain-differential-instrumentation.html">High Gain Differential Instrumentation Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/extended-common-mode-instrument.html">Extended Common Mode Instrument Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/battery-powered-buffer-amplifier-for.html">Battery Powered Buffer Amplifier for Standard Cell</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2433861733295108445?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-53272168646425942002010-10-24T23:22:00.001-03:002010-10-24T23:22:25.695-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/wide-range-digitally-controlled.html">Wide Range Digitally Controlled Variable Gain Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/wide-bandwidth-low-noise-low-drift.html">Wide Bandwidth Low Noise, Low Drift Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/two-wire-to-four-wire-audio-converter.html">Two Wire To Four Wire Audio Converter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/transducer-amplifier.html">Transducer Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/summing-amplifier-with-low-input.html">Summing Amplifier With Low Input Current</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stereo-amplifier-with-gain-control.html">Stereo Amplifier With Gain Control</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/stable-unity-gain-buffer-with-good.html">Stable Unity Gain Buffer With Good Speed And High Input Impedance</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/speaker-amplifier-for-hand-held.html">Speaker Amplifier For Hand Held Transceivers</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/pulse-width-proportional-controller.html">Pulse Width Proportional Controller Circuit</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/power-booster.html">Power Booster</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/mini-stereo.html">Mini Stereo</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/micro-sized-amplifier.html">Micro Sized Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/low-distortion-audio-limiter.html">Low Distortion Audio Limiter</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/logarithmic-amplifier-3.html">Logarithmic Amplifier 3</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/logarithmic-amplifier-2.html">Logarithmic Amplifier 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/logarithmic-amplifier.html">Logarithmic Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/line-operated-amplifier.html">Line Operated Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/jfet-amp-with-current-source-biasing.html">JFET Amp With Current Source Biasing</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/high-input-impedance-high-output.html">High Input Impedance, High Output Current Voltage Follower</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/general-purpose-preamplifier.html">General Purpose Preamplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/forward-current-booster.html">Forward Current Booster</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/fast-high-impedance-input-inverting.html">Fast High Impedance Input Inverting Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/discrete-current-boost-amplifier.html">Discrete Current Boost Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/discrete-current-booster.html">Discrete Current Booster</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/dc-stabilized-fast-amplifier.html">DC Stabilized Fast Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/chopper-stabilized-amplifier.html">Chopper Stabilized Amplifier</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/cable-boostrapping.html">Cable Boostrapping</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/audio-distribution-amplifier-2.html">Audio Distribution Amplifier 2</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/20db-audio-booster.html">20dB Audio Booster</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/100v-common-mode-ranger-differential.html">+-100V Common Mode Ranger Differential Amplifier</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-5327216864642594200?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-48995244475391549812010-10-24T23:21:00.005-03:002010-10-25T10:24:17.867-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/introduccin_30.html">Introducción</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/terminologa-de-redes.html">Terminología de Redes</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/anlisis-de-redes-mediante-ecuaciones-de.html">Análisis de Redes Mediante Ecuaciones de Variables de Rama</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/ramas-con-fuentes-ecuaciones-de.html">Ramas con Fuentes. Ecuaciones de Definición</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/modificaciones-de-la-geometra-de-un.html">Modificaciones de la Geometría de un Circuito</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/circuitos-duales.html">Circuitos Duales</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4899524447539154981?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-35363491123090336492010-10-24T23:21:00.003-03:002010-10-24T23:21:51.630-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/strobe-alarm.html">Strobe Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/three-dial-combination-lock.html">Three Dial Combination Lock</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/electronic-combination-lock.html">Electronic Combination Lock</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/digital-entry-lock.html">Digital Entry Lock</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/vehicle-security-system.html">Vehicle Security System</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/seriesparallel-loop-alarm.html">Series/Parallel Loop Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/self-latching-light-alarm-with-tone.html">Self Latching Light Alarm With Tone Output</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/security-alarm.html">Security Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/light-beam-alarm-preamp.html">Light Beam Alarm Preamp</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/light-beam-alarm-for-intrusion.html">Light Beam Alarm For Intrusion Detection</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/latching-burglar-alarm.html">Latching Burglar Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/home-security-system.html">Home Security System</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/high-power-alarm-driver.html">High Power Alarm Driver</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/door-minder.html">Door Minder</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/differential-voltage-or-current-alarm.html">Differential Voltage Or Current Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/burglar-alarm-with-timed-shutoff.html">Burglar Alarm With Timed Shutoff</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/burglar-alarm.html">Burglar Alarm</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/10/auto-alarm.html">Auto Alarm</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-3536349112309033649?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-14287303884496320632010-10-24T23:19:00.001-03:002010-10-24T23:21:03.201-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/introduccin.html">Introducción</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/anlisis-de-circuitos-por-el-mtodo-de_02.html">Análisis de Circuitos por el Método de Nudos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/expresin-matricial-de-las-ecuaciones-de_02.html">Expresión Matricial de las Ecuaciones de Nudos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/uso-de-matrices-en-el-mtodo-de-anlisis.html">Uso de Matrices en el Método de Análisis por Nudos</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/anlisis-de-circuitos-con-fuentes_02.html">Análisis de Circuitos con Fuentes Dependientes</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/admitancia-de-entrada.html">Admitancia de Entrada</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/admitancia-de-transferencia.html">Admitancia de Transferencia</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-1428730388449632063?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-58825011526375783892010-10-24T23:12:00.000-03:002010-10-24T23:18:00.639-03:00Articulos pertenecientes a la sección:<br /><ul><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/introduccion.html">Introduccion</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/anlisis-de-circuitos-por-el-mtodo-de.html">Análisis de Circuitos por el Método de Mallas</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/expresin-matricial-de-las-ecuaciones-de.html">Expresión Matricial de las Ecuaciones de Mallas</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/anlisis-por-mallas-en-circuitos-con.html">Análisis por Mallas en Circuitos con Acoplamiento Magnético</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/uso-de-las-matrices-en-el-mtodo-de.html">Uso de las Matrices en el Método de Análisis por Mallas</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/anlisis-de-circuitos-con-fuentes.html">Análisis de Circuitos con Fuentes Dependientes</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/impedancia-de-entrada.html">Impedancia de Entrada</a></li><li><a href="http://circuitos-de-electronica.blogspot.com/2007/11/impedancia-de-transferencia.html">Impedancia de Transferencia</a></li></ul><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-5882501152637578389?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-26225473075071576242007-11-22T12:21:00.000-03:002007-11-22T12:23:44.476-03:00<div style="text-align: center;"><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/R0We6CtuGZI/AAAAAAAACOE/PlJrDFF3PCA/s1600-h/Zero+Point+Switch.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/R0We6CtuGZI/AAAAAAAACOE/PlJrDFF3PCA/s400/Zero+Point+Switch.jpg" alt="" id="BLOGGER_PHOTO_ID_5135685670084155794" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2622547307507157624?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-36513314182252631092007-11-22T12:19:00.000-03:002007-11-22T12:21:24.910-03:00A three-way switch to control a lamp (off-dim-bright, etc.) uses an NE555 timer to generate a one-second pulse, triggered by ambient ac fields that are picked up by the human body. C1 and D1 form an input network. U2 is a decode counter/divider and drives one of 10 outputs (three are used). The logic outputs drive various resistors in series with the LED in the optocoupler. The optocoupler controls a triac that is in series with a load (lamp, etc.).<br />By reconfiguring the outputs of U2, more than three brightness levels can be obtained, up to 10. An 1N914 and resistor will be required for each output.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/R0WeZCtuGYI/AAAAAAAACN8/qCIwZRyv1VQ/s1600-h/Three+Way+Touch+Lamp.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/R0WeZCtuGYI/AAAAAAAACN8/qCIwZRyv1VQ/s400/Three+Way+Touch+Lamp.jpg" alt="" id="BLOGGER_PHOTO_ID_5135685103148472706" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-3651331418225263109?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-18265398560302907922007-11-22T12:17:00.000-03:002007-11-22T12:19:36.680-03:00Three power levels are supplied by the two logic inputs of this enhanced circuit. R5, D4, D5, and<br />C2 form a power supply for the logic IC. They can be omitted if another source of low voltage is available.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/R0Wd9CtuGXI/AAAAAAAACN0/d-oWxF7kL9g/s1600-h/Three+Power+Level+Triac+Controller.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/R0Wd9CtuGXI/AAAAAAAACN0/d-oWxF7kL9g/s400/Three+Power+Level+Triac+Controller.jpg" alt="" id="BLOGGER_PHOTO_ID_5135684622112135538" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-1826539856030290792?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-6934773326855710172007-11-22T12:16:00.000-03:002007-11-22T12:17:53.969-03:00The single transistor connected between the capacitor and the common side of the ac line allows a logic-level signal to control this triac power circuit. Resistor R2 prevents false triggering of the triac by the trickle current through the diac.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/R0WdjStuGWI/AAAAAAAACNs/HMn4YCU26AI/s1600-h/Sensitive+Triac+Controller.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/R0WdjStuGWI/AAAAAAAACNs/HMn4YCU26AI/s400/Sensitive+Triac+Controller.jpg" alt="" id="BLOGGER_PHOTO_ID_5135684179730504034" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-693477332685571017?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-69584895655588147022007-11-22T12:14:00.000-03:002007-11-22T12:16:11.809-03:00The light seem to dance in time with the music. Line-voltage lamps of about 40 to 100 W do nicely. The current for the lamp is from an SCR. When low-level audio is present across T1, SCR1 is not triggered into conduction. A louder signal, however, triggers the SCR so that the lamp lights and follows the sounds.<br />Since SCR1 is operated by an alternating current, the rectifier moves out of the avalanche condition when the gate current is low. Potentiometer R3 lets you adjust the power reaching transformer T1, so that with normal operating volume, SCR1 triggers again and again, except during quiet passages.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/R0WdIytuGVI/AAAAAAAACNk/rnAtQA6iwJs/s1600-h/Light+Modulator.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/R0WdIytuGVI/AAAAAAAACNk/rnAtQA6iwJs/s400/Light+Modulator.jpg" alt="" id="BLOGGER_PHOTO_ID_5135683724463970642" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6958489565558814702?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-46789773924764540082007-11-22T12:12:00.001-03:002007-11-22T12:13:56.550-03:00A photocell drives U1, a comparator, which controls optocoupler U2. A 6A Triac is used to switch an ac load, such as a lamp, etc.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/R0WcnCtuGUI/AAAAAAAACNc/t7ygAdr6ZkQ/s1600-h/Light+Controller.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/R0WcnCtuGUI/AAAAAAAACNc/t7ygAdr6ZkQ/s400/Light+Controller.jpg" alt="" id="BLOGGER_PHOTO_ID_5135683144643385666" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/R0WcnCtuGUI/AAAAAAAACNc/t7ygAdr6ZkQ/s1600-h/Light+Controller.jpg"><br /></a><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4678977392476454008?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-26684512926693630702007-11-22T12:09:00.000-03:002007-11-22T12:11:57.245-03:00The brightness of LED display is varied by using a photocell in place of one timing resistor in a 555 timer, and bypassing the other timing resistor to boost the timer's maximum duty cycle. The result is a brighter display in sunlight and a fainter one in the dark.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/R0WcKituGTI/AAAAAAAACNU/oJPbEHTT0eo/s1600-h/LED+Brightness+Control.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/R0WcKituGTI/AAAAAAAACNU/oJPbEHTT0eo/s400/LED+Brightness+Control.jpg" alt="" id="BLOGGER_PHOTO_ID_5135682655017113906" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2668451292669363070?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-72879542811703686832007-11-22T12:07:00.000-03:002007-11-22T12:09:49.862-03:00A low power, low cost dc lamp dimmer for a two-wire portable "flashlight" can be realized with little or no heatsinking. In addition, a single potentiometer, R3 adjusts lamp brightness. Battery power is stored in C1 for U1, which is a free-running multivibrator whose frequency is determined by R1, R2, R3, R4, and C2. U1 drives the gate of Q1, turning it and the lamp ON and OFF at a rate proportional to the multivibrator duty cycle.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/R0WbrStuGSI/AAAAAAAACNM/9P9J6DQdd5w/s1600-h/DC+Lamp+Dimmer.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/R0WbrStuGSI/AAAAAAAACNM/9P9J6DQdd5w/s400/DC+Lamp+Dimmer.jpg" alt="" id="BLOGGER_PHOTO_ID_5135682118146201890" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7287954281170368683?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-6918969555642144102007-11-22T12:03:00.000-03:002007-11-22T12:07:38.241-03:00A 555 timer IC, operating in the one-shot mode, is triggered by light striking photoresistors. These normally have a resistance of several megohms but, in the presence of light, that resistance drops to several hundred ohms, permitting current from the six-volt source to flow in the circuit. The R-C combination shown gives an on-time of about two minutes. Photoresistors PC3 and PC4 are mounted at headlight-height. When headlights illuminate the photoresistor, the timer starts. That actuates a relay, RY1, and the lights are turned on. The lights are automatically turned off when the timer's two minutes are up.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/R0WbGytuGRI/AAAAAAAACNE/sdZCX5xsbYo/s1600-h/Automatic+Light+Controller+For+Carport.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/R0WbGytuGRI/AAAAAAAACNE/sdZCX5xsbYo/s400/Automatic+Light+Controller+For+Carport.jpg" alt="" id="BLOGGER_PHOTO_ID_5135681491080976658" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-691896955564214410?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-80607948999365948672007-11-22T11:52:00.000-03:002007-11-22T12:02:57.028-03:00You can turn any ordinary household bulb into one that shimmers or blinks. This circuit works on any incandescent light up to 200 W, and runs on standard 120 Vac. The circuit uses an SCR to cause an ordinary lamp to shimmer. Note that one side of the lamp is connected directly to 120 Vac, and the other side of the lamp goes to the cathode of the SCR. As ac voltage is brought into the circuit through the line cord, it is full-wave rectified by diodes D1 and D2. That changes the ac to dc, and a portion of that dc voltage is applied to capacitor C1 through R2. Diode D3 blocks the (+) dc voltage so that only the voltage from the path of R1 and D3 is clear.<br />That forms an oscillator, which has a frequency determined by the setting of potentiometer P1 (because the other components have fixed values). Remember to use EXTREME CAUTION when using a device that connects to the ac line. NEVER use it outside or near water and always mount the entire kit inside a wooden or plastic (insulated) box to prevent any contact with the ac voltage.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/R0WaAituGQI/AAAAAAAACM8/lA1fofphqwM/s1600-h/120+AC+Shimmering+Light.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/R0WaAituGQI/AAAAAAAACM8/lA1fofphqwM/s400/120+AC+Shimmering+Light.jpg" alt="" id="BLOGGER_PHOTO_ID_5135680284195166466" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8060794899936594867?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-3962574594333211712007-11-14T09:44:00.000-03:002007-11-14T09:46:16.788-03:00VOUT = VIN (1+ (R1+R2)/R3) (R6/R4)<br />GAIN = 100<br />GAIN LIN = 0.002%<br />SLEW RATE = 2.5V/sec<br />PSRR = 112dB<br />IF (R6/R4 = R7/R5) THEN CMRR = 120 dB<br />ADJUST R7 FOR MAXIMUM CMRR<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzruBsbf2eI/AAAAAAAACM0/9gcIUasS-sI/s1600-h/Triple+Op+Amp+Instrumentation+Amplifier.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzruBsbf2eI/AAAAAAAACM0/9gcIUasS-sI/s400/Triple+Op+Amp+Instrumentation+Amplifier.jpg" alt="" id="BLOGGER_PHOTO_ID_5132676438215875042" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-396257459433321171?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-85139136135622454372007-11-14T09:42:00.000-03:002007-11-14T09:44:32.777-03:00Useful for +5-V single-supply applications, this op amp circuit features low drain (around 1mA), high input resistance (10 e14 ), and low bias current (10 e-14 A).<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/Rzrtnsbf2dI/AAAAAAAACMs/3bpBLE397bk/s1600-h/LMC6062+Instrumentation+Amplifier.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/Rzrtnsbf2dI/AAAAAAAACMs/3bpBLE397bk/s400/LMC6062+Instrumentation+Amplifier.jpg" alt="" id="BLOGGER_PHOTO_ID_5132675991539276242" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8513913613562245437?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-69920104239407438842007-11-14T09:41:00.000-03:002007-11-14T09:42:54.285-03:00This amplifier features 400-usec settling time (to 0.01%), 140-V/msec slow rate, and 17-Mhz gain-bandwidth product. The supply voltage can be 5 to 20 V.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzrtPsbf2cI/AAAAAAAACMk/LjCZd_jp7E8/s1600-h/LM6218+High+Speed+Instrumentation+Amplifier.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzrtPsbf2cI/AAAAAAAACMk/LjCZd_jp7E8/s400/LM6218+High+Speed+Instrumentation+Amplifier.jpg" alt="" id="BLOGGER_PHOTO_ID_5132675579222415810" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6992010423940743884?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-42020579573315714452007-11-14T09:39:00.000-03:002007-11-14T09:41:08.415-03:00The 2N4341 JFET is used as a level shifter between two op amps operated at different power supply voltages. The JFET is ideally suited for this type of application because Id = Is.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/Rzrs1cbf2bI/AAAAAAAACMc/KXgSCBBLvSg/s1600-h/Level+Shifting+Isolation+Amplifier.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/Rzrs1cbf2bI/AAAAAAAACMc/KXgSCBBLvSg/s400/Level+Shifting+Isolation+Amplifier.jpg" alt="" id="BLOGGER_PHOTO_ID_5132675128250849714" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4202057957331571445?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-59031521419740229052007-11-14T09:37:00.000-03:002007-11-14T09:39:34.877-03:00<div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/Rzrsasbf2aI/AAAAAAAACMU/irxk1SWBsaA/s1600-h/High+Stability+Thermocouple+Amplifier+2.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/Rzrsasbf2aI/AAAAAAAACMU/irxk1SWBsaA/s400/High+Stability+Thermocouple+Amplifier+2.jpg" alt="" id="BLOGGER_PHOTO_ID_5132674668689349026" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-5903152141974022905?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-74559769598170499782007-11-14T09:36:00.000-03:002007-11-14T09:37:35.799-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/Rzrr_8bf2ZI/AAAAAAAACMM/0UoPagYEWuQ/s1600-h/High+Stability+Thermocouple+Amplifier.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/Rzrr_8bf2ZI/AAAAAAAACMM/0UoPagYEWuQ/s400/High+Stability+Thermocouple+Amplifier.jpg" alt="" id="BLOGGER_PHOTO_ID_5132674209127848338" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><span style="text-decoration: underline;"><br /></span><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7455976959817049978?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-91952884667410593332007-11-14T09:34:00.001-03:002007-11-14T09:36:06.668-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/Rzrricbf2YI/AAAAAAAACME/9nspEbYujuw/s1600-h/High+Impedance+Bridge+Amplifier.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/Rzrricbf2YI/AAAAAAAACME/9nspEbYujuw/s400/High+Impedance+Bridge+Amplifier.jpg" alt="" id="BLOGGER_PHOTO_ID_5132673702321707394" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-9195288466741059333?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-8697464666438550442007-11-14T09:31:00.000-03:002007-11-14T09:33:31.511-03:00This circuit includes input guarding, cable bootstrapping, and bias current compensation. Differential bandwidth is reduced by C1 which also makes common-mode rejection less dependent on matching of input amplifiers.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzrrC8bf2XI/AAAAAAAACL8/1CQBFR09J7g/s1600-h/High+Gain+Differential+Instrumentation+Amplifier.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzrrC8bf2XI/AAAAAAAACL8/1CQBFR09J7g/s400/High+Gain+Differential+Instrumentation+Amplifier.jpg" alt="" id="BLOGGER_PHOTO_ID_5132673161155828082" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-869746466643855044?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-49231241017797275412007-11-14T09:29:00.000-03:002007-11-14T09:31:39.626-03:00These circuits allow a larger common-mode range than most instrument amplifier inputs can allow.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/Rzrqmsbf2WI/AAAAAAAACL0/Q80CCLelo3M/s1600-h/Extended+Common+Mode+Instrument+Amplifier.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/Rzrqmsbf2WI/AAAAAAAACL0/Q80CCLelo3M/s400/Extended+Common+Mode+Instrument+Amplifier.jpg" alt="" id="BLOGGER_PHOTO_ID_5132672675824523618" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4923124101779727541?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-12450195019790180012007-11-14T09:24:00.000-03:002007-11-14T09:29:48.251-03:00This circuit has negligible loading and disconnects the cell for low supply voltage or overload on output. The indicator diode extinguishes as disconnect circuitry is activated.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzrqKcbf2VI/AAAAAAAACLs/uK3ULKwL7cY/s1600-h/Battery+Powered+Buffer+Amplifier+for+Standard+Cell.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzrqKcbf2VI/AAAAAAAACLs/uK3ULKwL7cY/s400/Battery+Powered+Buffer+Amplifier+for+Standard+Cell.jpg" alt="" id="BLOGGER_PHOTO_ID_5132672190493219154" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-1245019501979018001?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-78491316450148994702007-11-12T12:11:00.000-03:002007-11-12T12:13:48.752-03:00The transmitter for the wireless headphones is built around a CD4046 CMOS phase-locked loop, coupled with a driver transistor, and a pair of infrared LEDs. Although the CD4046 is comprised of two phase comparators, a voltage-controlled oscillator (or VCO), a source follower, and a zener reference, only its VCO is used in this application.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzhtnAVR8zI/AAAAAAAACKs/gH_yX9K4Uhc/s1600-h/Wireless+IR+Headphone+Transmitter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzhtnAVR8zI/AAAAAAAACKs/gH_yX9K4Uhc/s400/Wireless+IR+Headphone+Transmitter.jpg" alt="" id="BLOGGER_PHOTO_ID_5131972292260262706" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7849131645014899470?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-53914848355038331512007-11-12T12:09:00.001-03:002007-11-12T12:11:14.445-03:00IR detector diode D1 intercepts the IR signal at around 40 kHz and feeds it from U1, a high-gain preamp, to PLL, U2, a 4046 configured to serve as an FM detector. U3 is an audio amplifier that feeds a pair of headphones or a speaker.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzhtAAVR8yI/AAAAAAAACKk/WzWtvXpE9hI/s1600-h/Wireless+IR+Headphone+Receiver.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzhtAAVR8yI/AAAAAAAACKk/WzWtvXpE9hI/s400/Wireless+IR+Headphone+Receiver.jpg" alt="" id="BLOGGER_PHOTO_ID_5131971622245364514" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-5391484835503833151?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-29432361691284531582007-11-12T12:07:00.000-03:002007-11-12T12:09:28.989-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzhslgVR8xI/AAAAAAAACKc/Vz2hnYUgxaw/s1600-h/Remote+Loudspeaker+Via+IR+Link.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzhslgVR8xI/AAAAAAAACKc/Vz2hnYUgxaw/s400/Remote+Loudspeaker+Via+IR+Link.jpg" alt="" id="BLOGGER_PHOTO_ID_5131971166978831122" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><span style="text-decoration: underline;"></span><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2943236169128453158?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-61836813938587796112007-11-12T12:05:00.000-03:002007-11-12T12:07:53.372-03:00If your ear is good, you can use this IR-pulse-to-audio converter to troubleshoot infrared remote-controls. It is also a good project for detecting infrared-light sources. A photo cell module detects IR radiation and drives audio IC U1. This circuit is useful for troubleshooting IR remote<br />controls.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzhsNwVR8wI/AAAAAAAACKU/YvODQUYmvd0/s1600-h/IR+Pulse+to+Audio+Converter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzhsNwVR8wI/AAAAAAAACKU/YvODQUYmvd0/s400/IR+Pulse+to+Audio+Converter.jpg" alt="" id="BLOGGER_PHOTO_ID_5131970758956937986" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6183681393858779611?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-19847405394649225852007-11-12T12:03:00.000-03:002007-11-12T12:05:51.548-03:00<div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzhrvgVR8vI/AAAAAAAACKM/NNeDeNYJDoM/s1600-h/IR+Type+Data+Link.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzhrvgVR8vI/AAAAAAAACKM/NNeDeNYJDoM/s400/IR+Type+Data+Link.jpg" alt="" id="BLOGGER_PHOTO_ID_5131970239265895154" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-1984740539464922585?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-7740897586404142432007-11-12T12:02:00.000-03:002007-11-12T12:03:54.063-03:00This circuit can be used to operate a VCR or CD player from another room. It's really an infrared signal repeater. The signal from the remote is received and then retransmitted over wires to an infrared LED. The beam from the LED is then picked up by the receiving window on the VCR or CD player.<br /><br />The visible light LED (LED1) in series with the IR unit (LED2) is used to indicate that the transmitted signal has been detected. The 100-kW trimmer potentiometer (R1) adjusts the repeater's sensitivity. The resistor that is usually found in series with the LEDs is omitted, because the voltage reading is about 1.0 Vdc as a result of the voltage drop across the lines.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzhrQwVR8uI/AAAAAAAACKE/P7UrpszCoCU/s1600-h/IR+Remote+Extender.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzhrQwVR8uI/AAAAAAAACKE/P7UrpszCoCU/s400/IR+Remote+Extender.jpg" alt="" id="BLOGGER_PHOTO_ID_5131969710984917730" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-774089758640414243?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-79176381445776987552007-11-12T12:00:00.000-03:002007-11-12T12:02:04.598-03:00IR radiation from LED2 (modulated by a 1-kHz wave) is keyed by U1 , and Q1 is radiated. Reflected IR energy is picked up by Q3, and the audio signal from Q3 is amplified by Q2 and sent to the decoder. The LED1 lights to indicate presence of reflected IR. LED1 can be the input of an isolator so that a triac or SCR can be controlled.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/Rzhq0gVR8tI/AAAAAAAACJ8/_XuPIN0BhKo/s1600-h/IR+Reflection+Proximity+Switch.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/Rzhq0gVR8tI/AAAAAAAACJ8/_XuPIN0BhKo/s400/IR+Reflection+Proximity+Switch.jpg" alt="" id="BLOGGER_PHOTO_ID_5131969225653613266" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7917638144577698755?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-13166595558895077512007-11-12T11:58:00.001-03:002007-11-12T12:00:00.272-03:00Q3 is an IR phototransistor that responds to a modulated IR beam. Q1 amplifies the ac component of the IR beam. Q2 drives a meter as a relative indication of the strength of the light beam. A strong beam gives a lower meter reading. U1 is a tone decoder that produces a low output on pin 1 during reception for an IR beam that is modulated with the correct tone frequency, determined by R6.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzhqXgVR8sI/AAAAAAAACJ0/AWc_ke1lRqs/s1600-h/IR+Receiver.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzhqXgVR8sI/AAAAAAAACJ0/AWc_ke1lRqs/s400/IR+Receiver.jpg" alt="" id="BLOGGER_PHOTO_ID_5131968727437406914" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-1316659555889507751?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-50609390626560125162007-11-12T11:54:00.000-03:002007-11-12T11:56:57.901-03:00The device generates an adjustable frequency of low to medium powered IR pulses of invisible energy and must be treated with care. The portable battery pack is stepped up to 200 to 300 volts by the inverter circuit consisting of Q1, Q2, and T1. Q1 conducts until saturated, at which time, the base no longer can sustain it in an "on" state and Q1 turns "off," causing the magnetic field in its collector winding to collapse thus producing a voltage or proper phase in the base drive winding that turns on Q2 until saturated, repeating the above sequence of events in an "on/off" action. The diodes connected at the bases provide a return path for the base drive current. The stepped up squarewave voltage on the secondary of T1 is rectified and integrated on C2.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzhpogVR8rI/AAAAAAAACJs/ZhxczV0cZUA/s1600-h/Invisible+Infrared+Pulsed+Laser+Rifle.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzhpogVR8rI/AAAAAAAACJs/ZhxczV0cZUA/s400/Invisible+Infrared+Pulsed+Laser+Rifle.jpg" alt="" id="BLOGGER_PHOTO_ID_5131967919983555250" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-5060939062656012516?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-65321501863762978862007-11-12T11:51:00.000-03:002007-11-12T11:54:07.837-03:00Although the IR region is free from radio interference, it is subject to interference from incandescent lamps, fluorescent lamps, stray reflections, and other sources. A simple way to overcome that problem is to create a carrier by chopping the IR radiation at a rate of 100 kHz. The audio then modulates the carrier by modulating the chopping rate. A receiver then detects the IR beam as a 100-kHz FM signal. The only disadvantage is that instead of a simple audio amplifier, a high-gain FM receiver is necessary. However, with the ICs that are now available, an FM receiver is easy to build, and contains little more circuitry than a high-gain audio amplifier.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/Rzho_gVR8qI/AAAAAAAACJk/J55y6C41Gtg/s1600-h/Infrared+Wireless+Speaker+System.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/Rzho_gVR8qI/AAAAAAAACJk/J55y6C41Gtg/s400/Infrared+Wireless+Speaker+System.jpg" alt="" id="BLOGGER_PHOTO_ID_5131967215608918690" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6532150186376297886?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-70576714289967254852007-11-12T11:49:00.000-03:002007-11-12T11:51:27.072-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzhoXgVR8pI/AAAAAAAACJc/hiG_gKBoALc/s1600-h/Infrared+Transmitter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzhoXgVR8pI/AAAAAAAACJc/hiG_gKBoALc/s400/Infrared+Transmitter.jpg" alt="" id="BLOGGER_PHOTO_ID_5131966528414151314" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><span style="text-decoration: underline;"><br /></span><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7057671428996725485?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-66892975208734429512007-11-12T11:47:00.000-03:002007-11-12T11:49:17.738-03:00The transmitter is built around two CMOS 555 timer ICs (TLC 555s). The transmitter generates a modulated 35-kHz IR signal. The 35-kHz carrier frequency is generated by IC2, and the 1 500-Hz modulating signal is generated by IC1. The output of IC2 drives LED1 through resistor R5; that LED provides visual indication that the transmitter is working. In addition, IC2 drives transistor Q1, which drives the two infrared LEDs (LED 2 and LED 3).<br /><br />To provide the high current needed to drive the two IR LEDs, capacitor C6 is precharged, the charge it contains is dumped when S1 is pressed. When S1 is not pressed, the power to the ICs is cut off. However, C6 is kept charged via R8. Then, when S1 is pressed, the current stored in C6 can be used to drive the LEDs for as much as 1/2 second. That's plenty of time for the receiver to pick up a signal.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/Rzhn3AVR8oI/AAAAAAAACJU/d7g1uNqlMqY/s1600-h/Infrared+Remote+Controller.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/Rzhn3AVR8oI/AAAAAAAACJU/d7g1uNqlMqY/s400/Infrared+Remote+Controller.jpg" alt="" id="BLOGGER_PHOTO_ID_5131965970068402818" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6689297520873442951?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-73865260548651023722007-11-12T11:44:00.000-03:002007-11-12T11:47:07.599-03:00Using a battery, a phototransistor and a visible-light LED, this simple circuit is a go/no go tester for IR remote control devices. The illumination of the LED indicates that Q1 is being modulated by IR energy.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzhnVwVR8nI/AAAAAAAACJM/qOcWu7MOzgY/s1600-h/Infrared+Remote+Control+Tester.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzhnVwVR8nI/AAAAAAAACJM/qOcWu7MOzgY/s400/Infrared+Remote+Control+Tester.jpg" alt="" id="BLOGGER_PHOTO_ID_5131965398837752434" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7386526054865102372?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-43086222769555441462007-11-07T14:25:00.001-03:002007-11-07T14:27:25.803-03:00A dc output that is proportional to frequency can be derived with this circuit. It is useful for analog frequency meter or tachometer applications.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzH1aoPOPII/AAAAAAAACEM/Q7ZEemf7L2M/s1600-h/Frequency-Voltage+Converter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzH1aoPOPII/AAAAAAAACEM/Q7ZEemf7L2M/s400/Frequency-Voltage+Converter.jpg" alt="" id="BLOGGER_PHOTO_ID_5130151288378375298" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzH1aoPOPII/AAAAAAAACEM/Q7ZEemf7L2M/s1600-h/Frequency-Voltage+Converter.jpg"><br /></a><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4308622276955544146?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-18186479358355536432007-11-07T14:23:00.000-03:002007-11-07T14:25:38.082-03:00In these applications, a pulse input at Fin is differentiated by a C-R network and the negative-going edge at pin 6 causes the input comparator to trigger the timer circuit. Just as with a V-to-F converter, the average current flowing out of pin 1 is Iaverage = i x (1.1 R1C1) x f. In this simple circuit, this current is filtered in the network RL = 100 k ohm and 1mF. The ripple will be less than 10 mV peak, but the response will be slow, with a 0.1 second time constant, and settling of 0.7 second to 0.1%.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzH1AoPOPHI/AAAAAAAACEE/4B59HHZXbO0/s1600-h/Frequency+to+Voltage+Converter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzH1AoPOPHI/AAAAAAAACEE/4B59HHZXbO0/s400/Frequency+to+Voltage+Converter.jpg" alt="" id="BLOGGER_PHOTO_ID_5130150841701776498" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-1818647935835553643?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-83045616310928542462007-11-07T14:21:00.001-03:002007-11-07T14:23:49.717-03:00The ratio of capacitors C1 and C2 determines division. With a positive pulse applied to the base of Q1, assume that C1 = C2 and that C1 and C2 are discharged. When Q1 turns off, both C1 and C2 charge to 10 volts each through R3. On the next pulse to the base of Q1, C1 is again discharged but C2 remains charged to 10 volts. As Q1 turns off this time, C1 and C2 again charge. This time C2 charges to the peak point firing voltage of the PUT causing it to fire. This discharges capacitor C2 and allows capacitor C1 to charge to the line voltage. As soon as C2 discharges and C1 charges, the PUT turns off. The next cycle begins with another positive pulse on the base of Q1 which again discharges C1. The input and output frequency can be approximated by the equation<br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzH0eYPOPFI/AAAAAAAACD0/DnaEPGj4rgg/s1600-h/Ecuacion+1.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzH0eYPOPFI/AAAAAAAACD0/DnaEPGj4rgg/s400/Ecuacion+1.jpg" alt="" id="BLOGGER_PHOTO_ID_5130150253291256914" border="0" /></a>For a 10 kHz input frequency with an amplitude of 3 volts, the table shows the values for C1 and C2 needed to divide by 2 to 11.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzH0eoPOPGI/AAAAAAAACD8/o_JnfxDpm_o/s1600-h/Low+Frequency+Divider.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzH0eoPOPGI/AAAAAAAACD8/o_JnfxDpm_o/s400/Low+Frequency+Divider.jpg" alt="" id="BLOGGER_PHOTO_ID_5130150257586224226" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8304561631092854246?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-84028993292028389442007-11-07T14:19:00.000-03:002007-11-07T14:21:00.238-03:00Adding components Q3, D3, and resistors R3 through R6 to a conventional complementary symmetry class AB buffer can double the frequency of an input sine wave.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzHz5YPOPEI/AAAAAAAACDs/K6f8UiIcsXo/s1600-h/Frequency+Doubler+Works+to+1Mhz.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzHz5YPOPEI/AAAAAAAACDs/K6f8UiIcsXo/s400/Frequency+Doubler+Works+to+1Mhz.jpg" alt="" id="BLOGGER_PHOTO_ID_5130149617636097090" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzHz5YPOPEI/AAAAAAAACDs/K6f8UiIcsXo/s1600-h/Frequency+Doubler+Works+to+1Mhz.jpg"><br /></a><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8402899329202838944?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-43770991829423029642007-11-07T14:17:00.000-03:002007-11-07T14:19:15.813-03:00The output contains the sum component, which is twice the frequency of the input, since both input signals are the same frequency.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzHzfIPOPDI/AAAAAAAACDk/O1vukeUIAwk/s1600-h/Frequency+Doubler.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzHzfIPOPDI/AAAAAAAACDk/O1vukeUIAwk/s400/Frequency+Doubler.jpg" alt="" id="BLOGGER_PHOTO_ID_5130149166664530994" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4377099182942302964?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-64909741744908794032007-11-07T14:16:00.001-03:002007-11-07T14:17:36.635-03:00If the input frequency is known, the timer can easily be used as a frequency divider by adjusting the length of the timing cycle. Figure shows the waveforms of the timer when used as a divide-by-three circuit. This application makes use of the fact that this circuit cannot be retriggered during the timing cycle.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzHzHoPOPCI/AAAAAAAACDc/SDc10izK7gs/s1600-h/Frequency+Divider.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzHzHoPOPCI/AAAAAAAACDc/SDc10izK7gs/s400/Frequency+Divider.jpg" alt="" id="BLOGGER_PHOTO_ID_5130148762937605154" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6490974174490879403?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-72866134257158191582007-11-07T14:13:00.000-03:002007-11-07T14:15:57.119-03:00An input signal drives both SN7474 D-type flip-flops, which are positive edge-triggered devices. A low-to-high input signal transition triggers the A flip-flop, while a high-to-low input signal transition triggers the B flip-flop via the SN7404 inverter. Either flip-flop in the high state will cause the output to decrease via the SN7402 NOR gate. This in turn disables the opposite flip-flop from going to the high state. The flip-flop in the high state remains there for one clock period, then it is clocked low. With both flip-flops low, the output increases, enabling the opposite flip-flop to be clocked high one-half clock cycle later. This alternate enabling and disabling action of the flip-flops results in a divide-by- 1 1/2 function. That is, three clock pulses in, produce two evenly spaced clock pulses out. The circuit has no lock-up states and no inherent glitches. Replacing the NOR gate with an SN7400 NAND gate inverts the A, B, and output<br />signals. By adding simple binary or BCD counters, counting chains, such as divide-by-3, -6, -12, -24, -15, -30, etc., can be generated using the divide-by-1 1/2 circuit as a basis.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzHyu4POPBI/AAAAAAAACDU/iD-FxI0zruA/s1600-h/Divide+by+-1+1-2+Circuit.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzHyu4POPBI/AAAAAAAACDU/iD-FxI0zruA/s400/Divide+by+-1+1-2+Circuit.jpg" alt="" id="BLOGGER_PHOTO_ID_5130148337735842834" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7286613425715819158?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-64403952107488475492007-11-07T14:10:00.000-03:002007-11-07T14:13:09.301-03:00This circuit will double low-level signals with low distortion. The value of C should be chosen for low reactance at the operating frequency. Signal level at the carrier input must be less than 25 mV peak to maintain operation in the linear region of the switching differential amplifier. Levels to 50 mV peak may be used with some distortion of the output waveform.. If a larger input signal is available, a resistive divider may be used at the carrier input with full signal applied to the signal input.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzHyDYPOPAI/AAAAAAAACDM/C9M0CfuuAFI/s1600-h/Broadband+Frequency+Doubler.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzHyDYPOPAI/AAAAAAAACDM/C9M0CfuuAFI/s400/Broadband+Frequency+Doubler.jpg" alt="" id="BLOGGER_PHOTO_ID_5130147590411533314" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6440395210748847549?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-40920839166921042282007-11-06T10:45:00.000-03:002007-11-06T10:47:12.406-03:00The circuit provides a 10MHz cutoff frequency. Resistor R3 ensures that the input capacitance of the amplifier does not interact with the filter response at the frequency of interest. An equivalent low pass filter is similarly obtained by capacitance and resistance transformation.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBwTYPOO8I/AAAAAAAACCs/sJ-x10jcKFM/s1600-h/Wideband+Two+Pole+High+Pass+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBwTYPOO8I/AAAAAAAACCs/sJ-x10jcKFM/s400/Wideband+Two+Pole+High+Pass+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129723453801118658" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4092083916692104228?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-23913125585078225212007-11-06T10:43:00.000-03:002007-11-06T10:45:32.888-03:00A bootstrapped twin T notch filter in this circuit can yield an effective Q of up to 10. Rs adjusts the feedback, hence the Q. Values of C1 and C2 can be changed to alter the frequency. RF is a fine tune null control.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBv5YPOO7I/AAAAAAAACCk/aQ_wuovEm9A/s1600-h/Variable+Q+Filter+For+400Hz.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBv5YPOO7I/AAAAAAAACCk/aQ_wuovEm9A/s400/Variable+Q+Filter+For+400Hz.jpg" alt="" id="BLOGGER_PHOTO_ID_5129723007124519858" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2391312558507822521?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-57754689774792594462007-11-06T10:41:00.000-03:002007-11-06T10:43:49.075-03:00This circuit has adjustable bandwidth with values for a center frequency of about 800 Hz. The 10 K pot adjusts bandwidth from approximately +-350 Hz to +-140 Hz at 3 dB down points.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzBveoPOO6I/AAAAAAAACCc/FaP96vRXMF8/s1600-h/Variable+Bandwidth+Bandpass+Active+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzBveoPOO6I/AAAAAAAACCc/FaP96vRXMF8/s400/Variable+Bandwidth+Bandpass+Active+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129722547563019170" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-5775468977479259446?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-64023387393954648812007-11-06T10:39:00.000-03:002007-11-06T10:41:22.516-03:00This circuit is a variable audio bandpass filter that has a low cutoff variable from about 25 Hz to 700 Hz and a high cutoff variable from 2.5 kHz to over 20 kHz. Rolloff is 12dB/octave on both high and low ends. R2-a-b and R6-a-b are ganged potentiometers for setting lower and upper cutoff frequencies, respectively.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBu64POO5I/AAAAAAAACCU/yD7fBjVe8mA/s1600-h/Variable+Bandpass+Audio+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBu64POO5I/AAAAAAAACCU/yD7fBjVe8mA/s400/Variable+Bandpass+Audio+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129721933382695826" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6402338739395464881?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-34383951962438983392007-11-06T10:37:00.000-03:002007-11-06T10:39:21.055-03:00This circuit uses a Wien Bridge and variable negative feedback. R7 controls the gain and R8A and R8B controls the tuned frequency.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBudIPOO4I/AAAAAAAACCM/6RY3_rGbvYg/s1600-h/Tunable+Audio+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBudIPOO4I/AAAAAAAACCM/6RY3_rGbvYg/s400/Tunable+Audio+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129721422281587586" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-3438395196243898339?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-72627487628910429232007-11-06T10:35:00.000-03:002007-11-06T10:37:21.008-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBuAYPOO3I/AAAAAAAACCE/b-US8aND7yo/s1600-h/Three+Amplifier+Notch+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBuAYPOO3I/AAAAAAAACCE/b-US8aND7yo/s400/Three+Amplifier+Notch+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129720928360348530" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><span style="text-decoration: underline;"><br /></span><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7262748762891042923?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-51701328623155506282007-11-06T10:32:00.000-03:002007-11-06T10:35:41.093-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBtmYPOO2I/AAAAAAAACB8/-tNPnRP74sM/s1600-h/Speech+Filter+%28300Hz+-+3kHz+Bandpass%29.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBtmYPOO2I/AAAAAAAACB8/-tNPnRP74sM/s400/Speech+Filter+%28300Hz+-+3kHz+Bandpass%29.jpg" alt="" id="BLOGGER_PHOTO_ID_5129720481683749730" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><span style="text-decoration: underline;"></span><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-5170132862315550628?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-89150618588667346342007-11-06T10:27:00.000-03:002007-11-06T10:32:13.296-03:00This simple 1 kHz filter uses a voltage follower and an RC section for a filter element. For other frequencies f3 dB - 1/6.28 R1C1. The response drops 6 dB/octave below f3dB.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBsuYPOO1I/AAAAAAAACB0/_8nwkuacQBQ/s1600-h/Simple+High+Pass+Active+Filter+For+1kHz.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBsuYPOO1I/AAAAAAAACB0/_8nwkuacQBQ/s400/Simple+High+Pass+Active+Filter+For+1kHz.jpg" alt="" id="BLOGGER_PHOTO_ID_5129719519611075410" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8915061858866734634?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-47175019502207270602007-11-06T10:24:00.000-03:002007-11-06T10:27:42.691-03:00This circuit uses equal value capacitors. The cutoff frequency (fc) is<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBrgIPOOzI/AAAAAAAACBk/DTEC-FI_v4A/s1600-h/Ecuacion+4.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBrgIPOOzI/AAAAAAAACBk/DTEC-FI_v4A/s400/Ecuacion+4.jpg" alt="" id="BLOGGER_PHOTO_ID_5129718175286311730" border="0" /></a><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBrvIPOO0I/AAAAAAAACBs/yX9pv62AON0/s1600-h/Second+Order+Low+Pass+Filter+For+10kHz.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBrvIPOO0I/AAAAAAAACBs/yX9pv62AON0/s400/Second+Order+Low+Pass+Filter+For+10kHz.jpg" alt="" id="BLOGGER_PHOTO_ID_5129718432984349506" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4717501950220727060?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-64085753296198711942007-11-06T10:23:00.001-03:002007-11-06T10:24:34.385-03:00This second-order filter can be scaled to change the cutoff frequencies.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBrA4POOyI/AAAAAAAACBc/J8Lf7D4swoY/s1600-h/Second+Order+100Hz+High+Pass+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBrA4POOyI/AAAAAAAACBc/J8Lf7D4swoY/s400/Second+Order+100Hz+High+Pass+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129717638415399714" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-6408575329619871194?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-38260485439003932172007-11-06T10:18:00.000-03:002007-11-06T10:23:04.636-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBqn4POOxI/AAAAAAAACBU/vsBI8AedUKE/s1600-h/Scratch+Filter+Using+LM387.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBqn4POOxI/AAAAAAAACBU/vsBI8AedUKE/s400/Scratch+Filter+Using+LM387.jpg" alt="" id="BLOGGER_PHOTO_ID_5129717208918670098" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><span style="text-decoration: underline;"><br /></span><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-3826048543900393217?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-10453877752068325402007-11-06T10:16:00.000-03:002007-11-06T10:18:24.176-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBph4POOwI/AAAAAAAACBM/qNbpSh0UdKU/s1600-h/Rumble+Filter+Using+LM387.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBph4POOwI/AAAAAAAACBM/qNbpSh0UdKU/s400/Rumble+Filter+Using+LM387.jpg" alt="" id="BLOGGER_PHOTO_ID_5129716006327827202" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><span style="text-decoration: underline;"></span><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-1045387775206832540?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-26892597264594142502007-11-06T10:14:00.000-03:002007-11-06T10:16:41.601-03:00The circuit consists of four stages of active bandpass filtering provided by two type- uA747 integrated-circuit dual op amps and includes a simple threshold detector (diodes D1 and D2) between stages 2 and 3 to reduce low-level background noise. Each of the four filter stages acts as a narrow bandpass filter with an audio bandpass centered at 750 Hz. The actual measured 3-dB bandwidth is only 80 Hz wide.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBpKIPOOvI/AAAAAAAACBE/WDLl7iyuWUQ/s1600-h/Razor+Sharp+CW+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBpKIPOOvI/AAAAAAAACBE/WDLl7iyuWUQ/s400/Razor+Sharp+CW+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129715598305934066" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-2689259726459414250?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-71814172854496610562007-11-06T10:12:00.001-03:002007-11-06T10:14:41.603-03:00The op amp is connected in the inverting mode. Resistor R3 from the output to the inverting input sets the gain and current through the frequency-determining capacitor, C1. Capacitor C2 provides feedback from the output to the junction of R1 and R2. C1 and C2 are always equal in value. Resistor R2 may be made adjustable in order to adjust the center frequency which is determined from:<br /><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBod4POOtI/AAAAAAAACA0/xQVMhPPXXYU/s1600-h/Ecuacion+3.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBod4POOtI/AAAAAAAACA0/xQVMhPPXXYU/s400/Ecuacion+3.jpg" alt="" id="BLOGGER_PHOTO_ID_5129714838096722642" border="0" /></a><br />When designing a filter of this type it is best to select a value for C1 and C2, keeping them equal. Typical audio filters have capacitor values from 0.01 uF to 0.1 uF which will result in reasonable values for the resistors.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBor4POOuI/AAAAAAAACA8/mY275K4rteA/s1600-h/Multiple+Feedback+Bandpass+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBor4POOuI/AAAAAAAACA8/mY275K4rteA/s400/Multiple+Feedback+Bandpass+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129715078614891234" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7181417285449661056?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-87325887112194528122007-11-06T10:08:00.000-03:002007-11-06T10:11:50.927-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBn1YPOOsI/AAAAAAAACAs/VUfl0L3jKUE/s1600-h/Multiple+Feedback+Bandpass+Filter+%281.0kHz%29.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBn1YPOOsI/AAAAAAAACAs/VUfl0L3jKUE/s400/Multiple+Feedback+Bandpass+Filter+%281.0kHz%29.jpg" alt="" id="BLOGGER_PHOTO_ID_5129714142312020674" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8732588711219452812?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-71906722770146746852007-11-06T10:06:00.000-03:002007-11-06T10:08:46.274-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBnSYPOOrI/AAAAAAAACAk/YTn4TNmF_X8/s1600-h/High+Pass+Active+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBnSYPOOrI/AAAAAAAACAk/YTn4TNmF_X8/s400/High+Pass+Active+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129713541016599218" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><span style="text-decoration: underline;"><br /></span><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-7190672277014674685?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-47988425539692448242007-11-06T10:03:00.000-03:002007-11-06T10:06:16.827-03:00<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBmdYPOOpI/AAAAAAAACAU/O4gZnt7x71k/s1600-h/Ecuacion+2.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://2.bp.blogspot.com/_PRyxxfKmC4k/RzBmdYPOOpI/AAAAAAAACAU/O4gZnt7x71k/s400/Ecuacion+2.jpg" alt="" id="BLOGGER_PHOTO_ID_5129712630483532434" border="0" /></a><br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzBmqoPOOqI/AAAAAAAACAc/yG1rG2I01mE/s1600-h/High+Q+Notch+Filter+2.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzBmqoPOOqI/AAAAAAAACAc/yG1rG2I01mE/s400/High+Q+Notch+Filter+2.jpg" alt="" id="BLOGGER_PHOTO_ID_5129712858116799138" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_PRyxxfKmC4k/RzBmqoPOOqI/AAAAAAAACAc/yG1rG2I01mE/s1600-h/High+Q+Notch+Filter+2.jpg"><br /></a><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4798842553969244824?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-58675163586413940952007-11-06T10:00:00.000-03:002007-11-06T10:02:23.429-03:00A shows a twin-T network connected to an LM102 to form a high Q, 60 Hz notch filter. The junction of R3 and C3, which is normally connected to ground, is bootstrapped to the output of the follower. Because the output of the follower is a very low impedance, neither the depth nor the frequency of the notch change; however, the Q is raised in proportion to the amount of signal fed back to R3 and C3. B shows the response of a normal twin-T and the response with the follower added.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBl0IPOOoI/AAAAAAAACAM/mu2lKe2xoE8/s1600-h/High+Q+Notch+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBl0IPOOoI/AAAAAAAACAM/mu2lKe2xoE8/s400/High+Q+Notch+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129711921813928578" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-5867516358641394095?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-87725219396842344702007-11-06T09:58:00.000-03:002007-11-06T10:00:23.654-03:00The input signal is rectified by D1 and D2 op amp U1-a, and fed to output amp U2. R8 is set for correct circuit calibration.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBlV4POOnI/AAAAAAAACAE/zaJR-mZ-ZpU/s1600-h/Full+Wave+Rectifier-Averaging+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBlV4POOnI/AAAAAAAACAE/zaJR-mZ-ZpU/s400/Full+Wave+Rectifier-Averaging+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129711402122885746" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-8772521939684234470?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-41551404144548803622007-11-06T09:56:00.000-03:002007-11-06T09:58:13.872-03:00<span style="text-decoration: underline;"><br /></span><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBkz4POOmI/AAAAAAAAB_8/NEYGwpk9FVc/s1600-h/Fourth+Order+High+Pass+Butterworth+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://4.bp.blogspot.com/_PRyxxfKmC4k/RzBkz4POOmI/AAAAAAAAB_8/NEYGwpk9FVc/s400/Fourth+Order+High+Pass+Butterworth+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129710818007333474" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><span style="text-decoration: underline;"><br /></span><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4155140414454880362?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.comtag:blogger.com,1999:blog-8815233989611487738.post-48902062683089353622007-11-06T09:52:00.001-03:002007-11-06T09:56:00.984-03:00The classic "state-variable" (two-integrator) filter (see Fig. A) is famous for its insensitivity to device parameter tolerances, as well as its ability to provide three simultaneous separate outputs: high pass, bandpass, and low pass. These advantages often offset the fact that a quad operational amplifier is needed to implement the circuit.<br /><br />A modification of the classic scheme that applies the input voltage via amplifier UD, rather than UA provides a bandpass output with a fixed peak gain that doesn't depend on the Q of the filter. It was found by using that configuration, a fourth notch-filter output can be obtained if R1 = R6 (see Fig. B).<br /><br />If R1 = R6 = R2, the gains of both the notch and bandpass outputs are unity, regardless of the Q factor, as determined by R3, R1, R2, R4, R5, and R6. The resonant (or cutoff) frequency is given by w, -1/Ro x Co. Depending on the capacitor values and frequency w, resistance Ro might also share the same monolithic network for maximum space economy. As with the classic configuration, resonant frequency w can be electrically controlled by switching resistors Ro, or by using analog multipliers in series with the integrators.<br /><br /><div style="text-align: center;"><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBkMIPOOlI/AAAAAAAAB_0/1U0hbLkZ3OY/s1600-h/Four+Output+Filter.jpg"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer;" src="http://1.bp.blogspot.com/_PRyxxfKmC4k/RzBkMIPOOlI/AAAAAAAAB_0/1U0hbLkZ3OY/s400/Four+Output+Filter.jpg" alt="" id="BLOGGER_PHOTO_ID_5129710135107533394" border="0" /></a><span style="font-size:85%;">Click para ampliar</span><br /></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/8815233989611487738-4890206268308935362?l=circuitos-de-electronica.blogspot.com' alt='' /></div>Emilionoreply@blogger.com