Internal-combustion engines – High tension ignition system – Current or voltage sensing in coil primary
Patent
1996-12-17
1999-10-26
Dollnar, Andrew M.
Internal-combustion engines
High tension ignition system
Current or voltage sensing in coil primary
315209T, F02P 305
Patent
active
059709642
ABSTRACT:
A circuit is provided in which a voltage due to a minute current is applied to a gate terminal from a collector terminal when a collector voltage is higher than a gate voltage in an operation of current limitation. Thus, an increase in the collector voltage immediately after the operation of current limitation starts serves to boost the gate voltage. The boosted voltage suppress an abrupt increase in the collector voltage. When the collector voltage is reduced by oscillation, the action of boosting the gate voltage is lowered to suppress the reduction of the collector voltage.
REFERENCES:
patent: 3587551 (1971-06-01), Harrow
patent: 4030469 (1977-06-01), Chateau
patent: 5045964 (1991-09-01), Bennett et al.
patent: 5115369 (1992-05-01), Robb et al.
patent: 5446385 (1995-08-01), Kugler et al.
patent: 5603308 (1997-02-01), Ooyabu et al.
Fujihira Tatsuhiko
Furuhata Shoichi
Takeuchi Shigeyuki
Dollnar Andrew M.
Fuji Electric & Co., Ltd.
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