The main coil is composed of main coil, secondary coil, magnetic core, switching transistor and other auxiliary parts. The main coil is charged by battery, the secondary coil discharge spark plug ignites, and the transistor is responsible for the switch.

When the current passes through the distributor, the platinum contacts are controlled by cams. When the contacts turn off, the current will be supplied to the ignition coil intermittently instead of continuously.

With the development of automotive gasoline engine towards high speed, high compression ratio, high power, low fuel consumption and low emission...

Additional resistors in low voltage circuit of ignition coil have the function of balancing high voltage sparks. When the current passes through the primary coil...