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Scooter Cdi For Motorcycle Ignition Coil

Basic Info

Model No.: 3

Product Description

CDI is the abbreviation of "capacitor diode ignition", which means "capacitor diode ignition". Zhi
The engine must be ignited by high voltage electricity. The traditional method is to turn on or cut off the magnetic circuit of the Ignition Coil by means of contact switch, which makes the two primary and secondary coils of the ignition coil produce induced electromotive force and produce high voltage electricity. CDI uses capacitor and thyristor diode circuit instead of contact switch, that is, contactless ignition.
The working process of CDI: when the engine is running, the magneto also rotates to generate current. The current is rectified by silicon diode to charge the capacitor. At this time, the SCR is in the cut-off state, and the current cannot pass through the SCR. When the pulse rotor turns to the ignition position, the pulse generator sends out an electrical signal, which is added to the control pole of the thyristor to trigger the thyristor to turn on, so the electric energy of the capacitor enters the ignition coil through the SCR. When the pulse rotor turns to the ignition position, the pulse generator stops sending out electrical signals, the thyristor is cut off immediately, and the current of ignition coil is disconnected. At this time, the ignition coil will immediately generate self coupling high voltage electricity, which makes the spark plug ignite. In this way, the engine can work normally.
CDI is an uncomplicated electronic circuit. It simplifies the structure of magneto, reduces the cost and improves the reliability of ignition. Therefore, most motorcycles use CDI


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