Electronic monitoring and redundant control circuit for a power

Details Electronic monitoring and redundant control circuit for a power Electronic monitoring and redundant control circuit for a power

1990-12-05

1992-09-08

Stephan, Steven L.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 56, 361100, H02H 324

Patent

active

051463865

ABSTRACT:
A protective circuit for removing power from a load detects the presence of a control signal which causes electrical power to be delivered to a load, for example, via a controlled switching device such as an electromechanical relay or a solid state relay. The protective circuit also detects the presence of voltage across the load, signifying that the controlled switching device is causing power to be supplied to the load. The protective circuit removes power form the load when there is an absence of control signal and there is voltage across the load, indicating a failure of the controlled switching device.

REFERENCES:
patent: 4038584 (1977-07-01), Tarchalski
patent: 4271448 (1981-06-01), Pond
patent: 4882782 (1989-11-01), Kimizuka

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