Resettable overcurrent protective circuit

Details Resettable overcurrent protective circuit Resettable overcurrent protective circuit

1998-07-16

1999-12-14

Gaffin, Jeffrey

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 58, 361100, 361115, H02H 300

Patent

active

060025662

ABSTRACT:
An overcurrent protective circuit includes a N-type depletion mode FET, a P-type depletion mode FET, and a switch. The sources of the N-type depletion mode FET and the P-type depletion mode FET are connected to each other. The gate of the N-type depletion mode FET is connected through a resistor to the drain of the P-type depletion mode FET. The gate of the P-type depletion mode FET is connected through a resistor to the drain of the N-type depletion mode FET. The drain of the N-type depletion mode FET is a positive external terminal of the circuit, while the drain of P-type depletion mode FET is a negative external terminal of the circuit. A switch electrically connects and disconnects between the gate of the N-type depletion mode FET and the gate of the P-type depletion mode FET.

REFERENCES:
patent: 3992650 (1976-11-01), Iwasa et al.
patent: 4533970 (1985-08-01), Brown
patent: 5115369 (1992-05-01), Robb et al.
patent: 5319515 (1994-06-01), Pryor et al.

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