CONTINUITY_TESTER_1

Published:2009/7/10 4:49:00 Author:May | From:SeekIC

A continuity tester that has an audible indicator can be more useful in some cases than a visual indicator, because you need not take your eyes from the job at hand. Q1 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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