Continuity Tester Circuit Schematic Diagram

The following continuity tester schematic provides continuous audible indicator in order to keep an eyes on the probe circuit. The circuit has a response time which is very fast and could help make a lot of faster tests while listening to the beep. When responds to a definite short circuit with resistance less than 50 ohms, the beep will active. When the resistance value above 80 ohms, the beep won’t work.

Continuity tester circuit schematic

continuity tester circuit schematic diagram

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