Control circuit for an electromagnet

Details Control circuit for an electromagnet Control circuit for an electromagnet

1998-10-23

2000-08-08

Fleming, Fritz

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361154, 361210, H01H 4704

Patent

active

061010820

ABSTRACT:
Control circuit for electromagnet with two coils used to determine a call phase and a hold phase, and powered from a DC power source. The energy source comprises a current generator and a capacitor powered by this current generator. A control device controls two switches, in which the first switch controls discharge of the capacitor in the first coil during the call phase, and the second switch sets up current passing through a second coil during the call phase and the hold phase. The required current output from the current generator is thus reduced.

REFERENCES:
patent: 3689808 (1972-09-01), Stampfli
patent: 5510951 (1996-04-01), Briedis et al.
patent: 5592356 (1997-01-01), Ryl et al.
patent: 5717562 (1998-02-01), Antone et al.

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