A pocket-sized continuity tester responds quickly to shorts or opens and is protected against connection to a live circuit.
Tom Wason, Phoenixville, PA; Edited by Charles H Small and Fran Granville -- EDN, 1/10/2008
This Design Idea describes a handy continuity tester with two modes of operation: It may sound if it detects continuity between its two probes, or it may sound when it detects no continuity. The second option permits testing for intermittent cable breaks. Response must be sufficiently fast to permit swiping a probe across perhaps 100 pins to instantly find a connected pin. The tester may also identify microfarad or larger capacitance between two conductors.Read article
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