How the ignition coil to work

    There are usually two sets of coils in the ignition coil, the primary coil and the secondary coil. The primary coil uses a thicker enameled wire, usually about 200-500 turns with an enameled wire of about 0.5-1 mm; the secondary coil uses a thinner enameled wire, usually about 15000-25000 turns with an enameled wire of about 0.1 mm. One end of the primary coil is connected to the low-voltage power supply (+) on the vehicle, and the other end is connected to the switching device (breaker). One end of the secondary coil is connected to the primary coil, and the other end is connected to the output end of the high-voltage line to output high-voltage electricity.
      The reason why the ignition coil can turn the low voltage on the car into a high voltage is because it has the same form as the ordinary transformer, and the primary coil has a larger turn ratio than the secondary coil. However, the working mode of the ignition coil is different from that of ordinary transformers. The working frequency of ordinary transformers is fixed at 50Hz, also known as industrial frequency transformers, while the ignition coils work in the form of pulses, which can be regarded as pulse transformers. The rotational speed repeatedly stores and discharges energy at different frequencies.
     When the primary coil is powered on, a strong magnetic field is generated around it as the current increases, and the iron core stores magnetic field energy; when the switch device disconnects the primary coil circuit, the magnetic field of the primary coil decays rapidly, and the secondary coil is A high voltage will be induced. The faster the magnetic field of the primary coil disappears, the greater the current at the moment of current disconnection, and the greater the turn ratio of the two coils, the higher the voltage induced by the secondary coil.

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