Ignition Coil: Description and Operation

PURPOSE
The Ignition Coil transforms battery voltage (primary circuit) into ignition secondary voltage (secondary circuit) and delivers it in the form of a high voltage surge to the secondary ignition components.

OPERATION
Current flow through the primary winding is stored as a magnetic field. When current flow in the primary winding is interrupted, the magnetic field collapses, inducing a voltage surge into the secondary windings.