Charon
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This bike does not use a CDI. It uses a Transistor Controlled Ignition, which replaces the points of a conventional system. Power is supplied to the coil primary winding from the battery through the ignition switch and wiring. The other side of the coil primary goes to the TCI, the switching transistor of which grounds it. Thus, current flows through the coil primary. When the stator sends a pulse to the TCI, the TCI briefly turns off the current through the coil, in just exactly the same way that a set of breaker points does when they open. The abrupt stopping of the current causes the coil to produce a high voltage in its secondary winding, which is led to the spark plug causing it to spark.
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