Low Value Capacitance Meter

Published:2012/9/4 20:54:00 Author:Ecco | Keyword: Low Value, Capacitance Meter | From:SeekIC

This circuit was originally designed to measure the volume of fluid inside a medical syringe. As designed, it produces a zero to 5 volt output, corresponding to a capacitance change of about 10 picofarads. With a digital voltmeter, at its output, it can resolve a capacitance change of 0.002 picofarads or 2 femtofarads. Source: discovercircuits



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