Capacitance measuring apparatus for capacitor

Details Capacitance measuring apparatus for capacitor Capacitance measuring apparatus for capacitor

2008-02-24

2010-11-02

Dole, Timothy J (Department: 2831)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S658000, C324S686000

Reexamination Certificate

active

07825670

ABSTRACT:
A measuring apparatus for measuring capacitance of a capacitor includes a microprocessor, a control circuit coupled to the capacitor, and an Analog-to-Digital (A/D) converting circuit. The control circuit receives a control signal from the microprocessor, and outputs an analog voltage signal of the capacitor, and the control circuit charges/discharges the capacitor according to the control signal. The A/D converting circuit receives the analog voltage signal from the control circuit, and outputs a digital voltage signal. The microprocessor receives the digital voltage signal from the A/D converting circuit, and calculates capacitance of the capacitor according to the digital voltage signal and charge/discharge time.

REFERENCES:
patent: 6191723 (2001-02-01), Lewis
patent: 6356086 (2002-03-01), Cook et al.
patent: 6750800 (2004-06-01), Yoshinaga
patent: 7173438 (2007-02-01), Pooranakaran et al.
patent: 7236145 (2007-06-01), Park
patent: 2004/0124999 (2004-07-01), Kim et al.
patent: 2766247 (2006-03-01), None
patent: 06-331669 (1994-12-01), None

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