Comparator for over-voltages

Posted on Dec 23, 2012

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 over-voltages.

Comparator for over-voltages
Click here to download the full size of the above Circuit.

If excessive voltage momentarily appears at the 5, 12 and -12 V inputs, the LED for that circuit lights and the beeper sounds for as long as the

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