Patent ID: 9109939
Filing Date: 2015-08-18
Classification: G01F

Abstract:
1. A capacitance measuring system, comprising: an AC signal generator having a first terminal and a second terminal, the second terminal coupled to a ground terminal of the system; and conversion circuitry having an input terminal and an output terminal, for converting an AC current through the input terminal to a substantially DC voltage value, relative to the first terminal of the AC signal generator, and placing the substantially DC voltage value at an output terminal of the conversion circuitry, the input terminal for coupling to a first terminal of a capacitor under test having a capacitance to be measured, a second terminal of the capacitor under test for coupling to the ground terminal of the system; wherein the conversion circuitry includes a first supply terminal for coupling to a DC voltage supply and a second supply terminal coupled to the first terminal of the AC signal generator, and wherein the substantially DC voltage value is based in part upon a capacitance of the capacitor under test.