Current limiting circuit

Details Current limiting circuit Current limiting circuit

1996-09-13

1998-07-21

Fleming, Fritz

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

361152, H01H 4710

Patent

active

057842442

ABSTRACT:
An electronic circuit, and corresponding method, for controlling the closing velocity of electrical switchgear, includes an actuator and a current detection circuit that detects whether an optimum amount of current is flowing through the actuator. When the optimum amount of current is detected, a current optimizing resistor is inserted into the path of the current flowing through the actuator, thus limiting the current flowing through the actuator to the optimum amount. This, in turn, limits the closing velocity of the electrical switchgear and minimizes contact bounce.

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Published Australian Patent Applicaton No. AU-A-47333/93, "A Charging Circuit", filed by Nu-Lec Pty Ltd. published on Mar. 24, 1994.

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