High or low voltage electrical resistance tester

Details High or low voltage electrical resistance tester High or low voltage electrical resistance tester

1991-09-16

1993-11-30

Wieder, Kenneth A.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324548, 324549, 324556, 324133, G01R 3102

Patent

active

052669025

ABSTRACT:
An electrical resistance and insulation tester providing a 12 volt D.C. and a 500 volt D.C. testing circuit. Indicating means are comprised of an incandescent bulb for the 12 volt D.C. test circuit and a neon bulb for the 500 volt D.C. test circuit. A 12 volt D.C. power input circuit and a 110 volt A.C. power input circuit provide for operation at either input. The tester also comprises a chargeable capacitor circuit that allows for testing when the instrument is not connected to any power input source.

REFERENCES:
patent: 3689832 (1972-09-01), Leto et al.
patent: 3934195 (1976-01-01), Shires
patent: 4117397 (1978-09-01), Fukao et al.
patent: 4140964 (1979-02-01), Eubank et al.
patent: 4434401 (1984-02-01), York
patent: 4445084 (1984-04-01), Washington
patent: 5155441 (1992-10-01), Zelm

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