The role of the car ignition coil

by:Haiyan     2022-06-24
The function of the ignition coil is to convert the 12V low-voltage electricity of the power supply into 15-20kV high-voltage electricity. The ignition coil can be divided into the type with additional resistance and the type without additional resistance according to whether there is additional resistance. According to the shape of the iron core, it can be divided into open magnetic circuit type and closed magnetic circuit type. According to the difference in function, it is divided into ordinary type and high-energy type. The principle is: after the DC low voltage is inverted, doubled and rectified, it becomes a DC high voltage, and then by controlling the high voltage to pass through the primary of the ignition coil intermittently, a high voltage (generally around 20KV) is induced in the secondary of the ignition coil. , drive the spark plug to discharge and ignite.
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