Comparator Detects Power Supply Overvoltages, Catches Glitches

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(A) To maintain an alarm condition when an overvoltage transient disappears, add an SCR to the comparator circuits. For SCR operation, voltages to the comparator inputs are inverted. (B) The triple-voltage monitoring circuit detects transient power-supply overvoltages. If excessive voltage momentarily appears at the 5, 12 and -12V inputs, the LED for that circuit lights and the beeper sounds for as long as the overvoltage lasts.

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Comparator Detects Power Supply Overvoltages, Catches Glitches - Circuitos de Electronica

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