What is ignition coil circuit?

An ignition coil circuit is an essential component of an internal combustion engine's ignition system, responsible for converting the battery's low voltage (typically 12 volts) into the high voltage (thousands of volts) needed to ignite the air-fuel mixture in the engine's cylinders. The circuit consists of the ignition coil, a primary winding, and a secondary winding, along with associated components such as the ignition switch and distributor. When the ignition system is activated, current flows through the primary winding, creating a magnetic field that induces a high voltage in the secondary winding, which is then sent to the spark plugs. This process is crucial for starting the engine and ensuring efficient combustion.