3_IN_1_TEST_SET_LOGIC_PROBE_SIGNAL_TRACER_AND_INJECTOR

Published:2009/7/16 21:31:00 Author:Jessie | From:SeekIC

This circuit for a test set contains a signal injector (U1A/U1B) and associated components, a logic probe (U1C) and an audio amplifier. S1 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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