6W Warble Tone Siren

This circuit uses a CMOS chip and a VMOS FET amplifier for 6W of audio output. 18 W of audio can be generated using a +24-Vdc supply. IC1-a and IC1-b are used as a 1-Hz oscillator. IC1-c and IC1-d form a 1-kHz multivibrator that is gated by the 1-Hz signal from IC1-a and IC1-b.
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6W Warble Tone Siren - Circuitos de Electronica