A novel direct reading active-RC system for measurements of in-circuit, discrete, and incremental capacitances

摘要

A simple, low-component active-RC circuit is given for the measurement of in-circuit, discrete, and incremental capacitances. The measurement circuit provides the measured value of capacitance directly in terms of the circuit's output voltage. The proposed system provides good accuracy for these measurements. The capacitance measurements are independent of the signal frequency. Experimental results that support the theory are included.