A Simple Stray-Free Capacitance Meter by Using an Operational Amplifier

1 December 1983

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement

Vol. 32 (4) , 512-513
https://doi.org/10.1109/tim.1983.4315128

Abstract

A simple operational amplifier circuit known as a charge amplifier has an advantage of measuring capacitance independent of stray capacitance. Capacitance down to 0.03 pF could be experimentally measured with ease and the theoretical limit of measurement is discussed. Also the direct measurement of the electrostatic induction coefficients of a system of conductors by the circuit is introduced.

Keywords

OPERATIONAL AMPLIFIERS
CAPACITANCE MEASUREMENT
CAPACITORS
ELECTROSTATIC MEASUREMENTS
VOLTAGE
CURRENT MEASUREMENT
WIRES
BRIDGE CIRCUITS
CUTOFF FREQUENCY
CABLE SHIELDING

This publication has 0 references indexed in Scilit: