Internal-combustion engines – High tension ignition system – Current or voltage sensing in coil primary
Patent
1980-09-18
1982-11-16
Lazarus, Ira S.
Internal-combustion engines
High tension ignition system
Current or voltage sensing in coil primary
123651, 315209T, F02P 304
Patent
active
043590381
ABSTRACT:
The primary winding of an ignition coil is placed in series with the collor of a switching transistor. In order to protect the transistor against overvoltages, the collector is also connected to a level comparator and the base receives a two-state control signal which is synchronous with the rotation of the engine. One input of the comparator is connected through a divider network to the collector of the transistor and the outer input is connected to a fixed direct-current voltage source. Provision is also made for an error amplifier connected to the output of the comparator, and for a summing circuit which is connected to the control input of the transistor and receives the control signal.
REFERENCES:
patent: 4114582 (1978-09-01), Rabus et al.
patent: 4117819 (1978-10-01), Jarrett et al.
patent: 4153031 (1979-05-01), Kalkhof
patent: 4153032 (1979-05-01), Chateau
Dolinar Andrew M.
Groupement d'Interet Economique de Recherches et de Developpemen
Lazarus Ira S.
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