Latching Continuity Checker

Posted on Oct 16, 2012

This circuit detects brief shorts or opens. When S2 is in the up position, the circuit indicates if there is or

Latching Continuity Checker
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was continuity by lighting LED1. U1A and U1B are connected as an R-S flip-flop. SI resets the tester. When S2 is in the down position, a momentary interruption in continuity will light LED1. This tester is good for detecting intermittent shorts or opens.

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