Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1997-09-18
1999-08-17
Gaffin, Jeffrey
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361154, 361189, H01H 4704, H01H 4722
Patent
active
059402628
ABSTRACT:
A control circuit for an electromagnetically operable fuel control valve of a vehicle engine includes a tank capacitor which upon closure of first and second controllable switches supplies current to the winding of the valve to achieve a high rate of rise of current in the winding and rapid operation of the valve. Following operation of the valve it is maintained in its operated state by current chopping action, the current rise being achieved by drawing current from a low voltage source through a third controllable switch. The current fall is at a high rate and the resultant high voltage induced in the winding is utilized to recharge the tank capacitor.
REFERENCES:
patent: 4933805 (1990-06-01), Calfus
patent: 5053911 (1991-10-01), Kopec et al.
patent: 5412531 (1995-05-01), Clapp, III
patent: 5532526 (1996-07-01), Ricco et al.
patent: 5729422 (1998-03-01), Henke
English Language Translation of International Application WO 96/27198, 10 pages.
European Search Report, EP 97/30 7314, 3 pages.
Gaffin Jeffrey
Huynh Kim
Lucas Industries Public Limited Company
LandOfFree
Control circuit for an electromagnetic device for controlling an does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control circuit for an electromagnetic device for controlling an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control circuit for an electromagnetic device for controlling an will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-320781