Method and apparatus for diagnosing a twin-coil, bi-stable, magn

Details Method and apparatus for diagnosing a twin-coil, bi-stable, magn Method and apparatus for diagnosing a twin-coil, bi-stable, magn

1994-05-02

1996-03-05

Snow, Walter E.

Electricity: measuring and testing

Electromechanical switching device

340644, G01R 3102, G01R 31327, G08B 2100

Patent

active

054970938

ABSTRACT:
Electrical and mechanical operation of a bistable magnetically latching solenoid is diagnosed by monitoring induced voltage across the one of a pair of solenoid coils not energized. Energization of one of the pair of coils induces voltage across the other of the coils not energized and plunger actuation in response to energization induces another voltage therethrough. The various induced voltages are distinguishable as between those caused by energization of a coil or motion of the plunger.

REFERENCES:
patent: 5287087 (1994-02-01), Jencks et al.

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