Capacitance measurement

Details Capacitance measurement Capacitance measurement

1991-01-31

1992-08-04

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324607, 324677, 341150, G01R 2726

Patent

active

051362511

ABSTRACT:
The capacitance of an unknown capacitor is measured with multimeter instrumentation employing a dual slope analog-to-digital converter. The initial voltage across the capacitor is measured and the capacitor is cyclically charged until the capacitor reaches a predetermined proportion of possible charge. The final voltage is measured. The voltage across the charging resistance is integrated over successive charging cycles to provide a value proportional to the charge delivered to the capacitor and this value is divided by the difference between the initial and final voltages.

REFERENCES:
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patent: 4187460 (1980-02-01), Dauge
patent: 4217543 (1980-09-01), Strong
patent: 4556867 (1985-12-01), George
patent: 4775830 (1988-10-01), Lyyra
patent: 4797603 (1989-01-01), Choisnet
patent: 5028876 (1991-07-01), Cadwell
patent: 5073757 (1991-12-01), George

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