Continuity Tester

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

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.




Leave Comment

characters left:

New Circuits

.