AUTO_RANGING_DIGITAL_CAPACITANCE_METER

Published:2009/6/19 2:23:00 Author:May | From:SeekIC

This digital capacitance meter reads from 1 pF to 1000 μF. Basically, a timer(U4)uses the unknown capacitance to generate a pulse of duration, depending on the value of unknown capacitance, and the pulse duration is measured. The display is an LCD 0003 driven by a 74C947 counter/display driver.



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