F - Mech Eng,Light,Heat,Weapons – 02 – P
Patent
F - Mech Eng,Light,Heat,Weapons
02
P
317/5.4
F02P 3/08 (2006.01) F02P 3/06 (2006.01) F02P 15/00 (2006.01) F02P 15/10 (2006.01) H03K 3/57 (2006.01) H05C 1/04 (2006.01)
Patent
CA 1050100
ABSTRACT OF THE DISCLOSURE An ignition circuit of the capacitor discharge type is disclosed for internal combustion engines. The circuit com- prises a transistor inverter which supplies a voltage doubler to charge a storage capacitor. The storage capacitor is connected to an ignition coil through a thyristor. Control means for the thyristor includes engine breaker points or equiv- alent for alternately preventing and enabling turn-on of the thyristor. A voltage divider provides gate triggering current to the thyristor on each cycle of the voltage supply. This produces either single or multiple ignition pulses for each breaker point cycle, depending upon the engine speed. The voltage divider includes a leakage resistor to limit the initial pulse and to allow current flow through the breaker points and also includes an isolation resistor to render the triggering point of the thyristor immune to changes in the breaker point circuit.
222948
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