Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1978-02-02
1979-04-03
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361154, H01H 4704
Patent
active
041480902
ABSTRACT:
In an apparatus for controlling an electromagnetic valve which is adapted for use with the fuel injection systems of internal combustion engines, after the expiration of a predetermined time the control of the energization of the electromagnetic coil of the electromagnetic valve is changed from constant-voltage control to constant-current control, and any surge voltage caused during the control change is selectively absorbed, thereby ensuring stable energization of the electromagnetic valve despite variations in the supply voltage or the like.
REFERENCES:
patent: 3628102 (1971-12-01), Jauch et al.
patent: 3786314 (1974-01-01), Misch
patent: 3864604 (1975-02-01), Normile et al.
Ina Toshikazu
Kawai Hisasi
Moose Jr. Harry E.
Nippon Soken Inc.
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