Continuity Tester

Posted on Nov 13, 2012

A continuity tester that has an audible indicator can be more useful in some cases than a visual indicator, because you n

Continuity Tester
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eed not take your eyes from the job at hand, Ql and Q2 form an audio oscillator. When the test leads are connected to a continuous circuit, the oscillator operates, and sounds a tone from the speaker.

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