System for continuously monitoring the integrity of an electrica

Details System for continuously monitoring the integrity of an electrica System for continuously monitoring the integrity of an electrica

1996-09-17

1998-04-28

Nguyen, Vinh P.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324522, 340652, G01R 3104

Patent

active

057449651

ABSTRACT:
A system for monitoring the integrity of electrical connections includes a transformer with its primary coupled across a dual split contact arrangement and the secondary coupled to both an energy source and a monitoring circuit. When the contact condition is made the secondary impedance reaches a given value which results in a low output indicated by the monitoring circuit. The energy source is preferably a radio frequency oscillator driving the transformer secondary, which is also connected to a monitoring circuit. Preferably, the output from a current reference circuit, coupled to the secondary of the transformer, is coupled to the energy source circuit and the monitoring circuit so as to produce a given output in the monitoring circuit when the contact condition is made.

REFERENCES:
patent: 3626248 (1971-12-01), Bartlett et al.
patent: 3705401 (1972-12-01), Scott
patent: 3906491 (1975-09-01), Gosswiller et al.
patent: 4100380 (1978-07-01), Gosswiller

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