Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1987-11-27
1989-04-11
Boudreau, Leo H.
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
123607, 315209R, 315209SC, F02P 900
Patent
active
048209570
ABSTRACT:
An electronic ignition circuit for an internal combustion engine produces a plasma arc across the spark gap of an ignition device. An a.c. circuit is formed of a push-pull inverter, and a center tap primary step up transformer with feedback coil. A capacitor network passes pure a.c. to the primary of an ignition coil so that the wave fed to the ignition device is free of any d.c. component. An impedance connects to the breaker points or equivalent timing device to time the arcing so that an arcing a.c. voltage appears when the points are open, and a zero or low voltage wave appears when the points are closed. The circuit can also be used to feed a continuous wave to arcing devices in the cylinders of a diesel engine for preheating and ozonation of the air prior to fuel injection.
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Solid-State Devices manual, RCA Corp., 1975, pp. 282-290.
Boudreau Leo H.
Palladino Brian
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