Supply-voltage-compensated contactless ignition system for inter

Details Supply-voltage-compensated contactless ignition system for inter Supply-voltage-compensated contactless ignition system for inter

1981-04-23

1983-08-09

Myhre, Charles J.

Internal-combustion engines

High tension ignition system

Having specific trigger circuitry

123609, F02P 304

Patent

active

043972900

ABSTRACT:
A supply-voltage-compensated contactless ignition system for internal combustion engines, which includes input transistor operable in response to an engine ignition signal so as to control the operation of a power transistor to control the energization of an ignition coil with the operating level of the input transistors being varied with variation in the supply voltage, further includes a current mirror circuit having first and second current shunt paths including first and second transistors which are connected in parallel with a voltage clamping device such that the each current path substantially the same amount of current when the supply voltage is normal and that one of the current paths shunts a current increased over that of the other in response to a rise of the supply voltage beyond a predetermined value, and includes a shunt device for shunting the increased current to the input transistors.

REFERENCES:
patent: 3841288 (1974-10-01), Korteling
patent: 4185603 (1980-01-01), Sohner et al.
patent: 4308848 (1982-01-01), Ptaff et al.

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