Half four-bit digital voltmeter circuit

Published:2011/4/21 21:12:00 Author:Nicole | Keyword: semi-digital voltmeter | From:SeekIC

This is a LED display voltmeter circuit composed of DG7135. The minumin range is 200mV, the precision is 0.01%, it adopts LED to display half four-bit reading and positive/negative polarity, it has the flashing function when there is over range, the number update speed is 2.5/s, the input resistance is high, the input leakage current is about 1pA. It uses +5V power supply, the display current is 50mA, the power consumption of other circuit is about 6mA.



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