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Ignition - secondary circuit diagram



AOpening phase
BClosing phase

1Coil ignitionTransistor ignition
1Contact breaker opensTransistor closes
2Ignition voltage is achieved (ignition voltage peak),
sparking takes place
3Directly after the sparking, the voltage drops
abruptly to operational voltage level.
4The spark-gap is no longer conductive, typical horizontal course of the operational voltage line in the coil ignition.The spark-gap is no longer conductive, typical slanting course of the operational voltage line in the transistor ignition.
5The voltage swings out with subdued oscillations. (Drop-off process)
6Contact breaker closesTransistor switches through








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