Power supply protection circuit

Details Power supply protection circuit Power supply protection circuit

1994-06-03

1995-10-31

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

361 56, 361103, H02H 900, H02H 504

Patent

active

054635217

ABSTRACT:
In one aspect of the present invention, an apparatus for protecting electronic circuit elements from hazardous voltages is provided. The apparatus includes a source of electrical energy that produces electrical energy having a predetermined energy level. An electrical load is connected to the electrical energy source and responsively receives electrical energy. A signaling device receives electrical energy from the electrical energy source and produces an overvoltage signal in response to receiving electrical energy greater than the predetermined energy level. An NMOSFET is connected to the electrical load, and controllably regulates the electrical current flowing through the electrical load. A control device receives the overvoltage signal and responsively controls the operation of the NMOSFET.

REFERENCES:
patent: 4849683 (1989-07-01), Flolid
patent: 4883211 (1990-01-01), Bynum et al.
patent: 5008771 (1991-04-01), Palara
patent: 5195007 (1993-03-01), Kikuchi et al.
patent: 5212619 (1993-05-01), Baudelot et al.

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