High speed, large-current power control circuit

Details High speed, large-current power control circuit High speed, large-current power control circuit

1994-09-07

1995-10-03

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

361153, H01H 4732

Patent

active

054555027

ABSTRACT:
A power control circuit for replacing a current limiting fuse in an electrical protection circuit or for switching large currents rapidly has an array of transistors, each having an identical characteristic to each other and to a device under test, to provide parallel current paths. All of the rows of the transistor array are biased "on" except for a predetermined row. A gate signal is generated to control the "on/off" state of the transistors in the predetermined row, the gate signal being a function of the presence of excessive current--holding the predetermined row of transistors biased "on" in normal operation, and turning the predetermined row of transistors "off" when excessive current is detected.

REFERENCES:
patent: 5099383 (1994-03-01), Fukano et al.
patent: 5285148 (1994-02-01), Uhlenhoff et al.

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