DIGITAL VOLTMETER CIRCUIT


Posted on Feb 4, 2014

A basic digital voltmeter circuit using the Harris Semiconductor ICL7107 is shown. It has a 2-V range. Calibration consists of applying a known voltage of 1.2 V to the input and adjusting R3 for a correct reading on the display. Supply is ±5 V, and S1 selects either the supply voltage or an external reference..


DIGITAL VOLTMETER CIRCUIT
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