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1971 Kawaski CDI Capacitor Discharge Ignition - Vintage Motorcycle Ad For Sale
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1971 Kawaski CDI Capacitor Discharge Ignition - Vintage Motorcycle Ad:
1971 Kawaski CDI Capacitor Discharge Ignition - Vintage Motorcycle Ad
Original, vintage magazine advertisementSize: Approx. 8" x 11" (21 cm x 28 cm)Condition: Good
SPACE AGE, SOLID-STATE ELECTRONICSHERE’S HOW IT WORKSCapacitor Discharge means that a capacitor is chargedfor a brief moment and when it discharges, the sparkplug fires. To charge the capacitor, battery (or magneto)power Q is first stepped up to 400 volts by a dc-to-dcconverter o This voltage is then stored in capacitorQ. The capacitor Q is controlled by a thyristor Qwhich functions as an electronic switch. It has a built-ingate that is opened by voltage pulses supplied by asignal generator Q mounted on the generator rotorshaft. The voltage pulses are the timing pulses. Whena voltage pulse opens the thyristor gate, the 400 voltsstored in the capacitor Q is applied to the primaryignition coil The secondary ignition coil @ stepsup this voltage to 30,000 volts and fires the spark plug0. The spark plug 0 has a built-in booster that stepsthe voltage up even more.The superior advantage of CDI is that it never needsto be adjusted or timed — no moving parts to wear out —and it greatly improves low-end pulling power withoutsacrificing high rpm output. The result is a constantignition system that eliminates miss-fire and provides astronger power impulse with each rpm.11907-7108-08