Multi-Tester Logic Probe Signal Tracer And Injector


Posted on Jun 30, 2012

This circuit for a test set contains a signal injector (U1A/U1B) and associated com


Multi-Tester Logic Probe Signal Tracer And Injector
Click here to download the full size of the above Circuit.

ponents, a logic probe (U1C) and an audio amplifier. SI selects either 10-kHz or 100-Hz output. U1D, U1E, and U1F form an audio amplifier that drives a piezo sounder element without an internal driver so that it functions as a piezoelectric speaker.




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