Control circuit for predominantly inductive loads in particular

Details Control circuit for predominantly inductive loads in particular Control circuit for predominantly inductive loads in particular

1995-04-28

1996-07-02

Wong, Peter S.

Electrical transmission or interconnection systems

Electromagnet or highly inductive systems

361152, 361189, 123490, H01H 4700

Patent

active

055325262

ABSTRACT:
A control circuit for supplying a load with current having a high-amplitude ortion with a rapid leading edge, and a lower-amplitude portion. The circuit is input-connected to a low-voltage supply source, and comprises a number of actuator circuits parallel-connected between the input terminals and each including a capacitor and a load. Each actuator circuit also comprises a first controlled switch between the respective load and a reference line, for enabling energy supply and storage by the respective load. A second controlled switch is provided between the capacitor line and the load line, for rapidly discharging the capacitors into the load selected by the first switch and recirculating the load current, or for charging the capacitors with the recirculated load current.

REFERENCES:
patent: 4775914 (1988-10-01), Incardona
patent: 4933805 (1990-06-01), Calfus
patent: 4950974 (1990-08-01), Pagano

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