Resonance field discharge

Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...

Reexamination Certificate

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Details

C361S155000, C361S156000

Reexamination Certificate

active

07463473

ABSTRACT:
A field discharge circuit may rapidly reduce the field current of a generator, thereby avoiding an overvoltage condition. The field discharge circuit of the present invention may use another storage device, such as a capacitor, to quickly transfer the field current energy thereto and then slowly dissipate the transferred energy after the event (such as removal of a load) has passed. By transferring this energy to a storage device and subsequently slowly discharging this energy through a resistor, electromagnetic interference caused by a conventional resistive discharge can be reduced.

REFERENCES:
patent: 5642033 (1997-06-01), Bartol et al.
patent: 5932993 (1999-08-01), Kouwa et al.
patent: 6072301 (2000-06-01), Ashtiani et al.
patent: 6233165 (2001-05-01), Irissou et al.
patent: 19935260 (2000-02-01), None
patent: 58015466 (1983-01-01), None
patent: 2002272135 (2002-09-01), None
patent: 2007097261 (2007-04-01), None
European search report dated Jul. 3, 2008.

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