What is the Difference Between AC Ignition and DC Ignition in Motorcycles?

[RobertDella]

Here are the specific differences between AC ignition and DC ignition in motorcycles: 1. Power supply method: DC ignition is powered by the battery and is relatively stable; AC ignition is powered by the magneto charging winding, and the voltage level is determined by the engine speed. 2. Ignition voltage: Since the DC igniter is powered by the battery, the minimum continuous ignition speed is minimally affected by the engine, basically working reliably at less than 100r/min, and the ignition energy is consistent at both high and low speeds. This is because the igniter has an internal ignition charging voltage stabilization circuit, so the voltage of the ignition capacitor is always maintained at 200v. However, the voltage on the ignition capacitor of the AC igniter is variable. When the engine speed is around 500r/min, the peak voltage of the capacitor is about 70v. When the speed rises to 3500r/min, the capacitor voltage reaches its peak at about 250v, and the ignition energy is also at its maximum. In the range of 3500r/min~5000r/min, the capacitor voltage stabilizes at around 130v.