Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Reexamination Certificate
2007-04-18
2008-12-09
Sherry, Michael J (Department: 2836)
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
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.
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European search report dated Jul. 3, 2008.
Eldery Mohamed A.
Paton Robert D.
Caglar Esq. Oral
Honeywell International , Inc.
Mai Tien
Sherry Michael J
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