DIGITAL VOLTMETER CIRCUIT

  
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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 - schematic




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