Electronic current overload protection installation

Details Electronic current overload protection installation Electronic current overload protection installation

1982-09-29

1985-01-01

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 91, H02H 308

Patent

active

044918925

ABSTRACT:
An electronic current overload protection device in which an applied voltage is divided into the voltage across the load and the current-proportional voltage drop at an MOS transistor of a circuit that includes the load and the MOS transistor whose resistance is exactly linearly proportional to the current; this voltage drop is applied by way of a delay circuit to a threshold switch that controls the gate input of the MOS transistor by way of a driver stage; the threshold of the threshold circuit is adjustable corresponding to the current to be protected against.

REFERENCES:
patent: 4047233 (1977-09-01), Yorks et al.
patent: 4355342 (1982-10-01), Franzolini
patent: 4363068 (1982-12-01), Burns
"Electronic Circuit Breaker is Resettable"-Control Engineering, Sep. 1971, vol. 18, No. 9.

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