Current limiter and method for limiting current

Details Current limiter and method for limiting current Current limiter and method for limiting current

1982-05-27

1987-11-24

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307300, 307540, H03K 1708

Patent

active

047091711

ABSTRACT:
A circuit and method for limiting the current through a transistor that is driven from a preceding amplifier stage. The circuit comprises an additional transistor having the base and emitter thereof connected to the base and emitter of the transistor whose current is to be limited. A current source is supplied to the collector of the additional transistor which transistor becomes saturated when a limiting threshold is reached as the magnitude of the drive current supplied to the bases of the two transistors exceeds a value wherein the current source can not supply the collector current required by the additional transistor.

REFERENCES:
patent: 3845405 (1974-10-01), Leidich
patent: 4157513 (1979-06-01), Ghiringelli et al.

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