Ignition Coil: Description and Operation

PURPOSE/OPERATION
The Ignition Coil transforms battery Voltage into ignition Voltage and delivers it in the form of a high Voltage surge to the secondary ignition components. Current flow through the primary winding is stored as a magnetic field. When current flow in the primary winding is interrupted (by the power transistor breaking the circuit ground), the magnetic field collapses, inducing a Voltage surge into the secondary windings.