Detecting fixture and method thereof for detecting capacitors

Details Detecting fixture and method thereof for detecting capacitors Detecting fixture and method thereof for detecting capacitors

2007-05-08

2007-05-08

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C324S076660

Reexamination Certificate

active

11465340

ABSTRACT:
A detecting fixture for detecting a capacitor with leakage current among a capacitor group in parallel connection includes a reference voltage generator, an impedance converter, a comparator and a display unit. Wherein, the reference voltage generator is used for outputting a first voltage, the impedance converter is used for converting the impedance of the capacitor group in parallel connection into a second voltage and the comparator is respectively coupled with the outputs of the reference voltage generator and the impedance converter for comparing the first voltage with the second voltage. The display unit is coupled with the output of the comparator, wherein the second voltage is altered by heating a capacitor among the capacitor group in parallel connection and the comparator outputs a voltage difference in response to the altered second voltage, so that the display unit is able to indicate whether or not the corresponding capacitor has leakage current.

REFERENCES:
patent: 4931721 (1990-06-01), Berrigan et al.
patent: 6198290 (2001-03-01), Krinker
patent: 6211684 (2001-04-01), McKee et al.
patent: 6781401 (2004-08-01), Kim
patent: 7084638 (2006-08-01), Kramer et al.

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