Eclipse L4-1795cc 1.8L SOHC (1990)
Ignition Coil: Description and Operation
Ignition Coil Connector
The Ignition Coil located in the distributor, uses the principle of mutual induction to step up battery (low) Voltage to ignition (high) Voltage. The
Ignition Coil contains two windings of copper wire around a soft iron core. The primary winding is made of a hundred or so turns of wire. It is connected
to the battery through the ignition switch. Current flows through it creating a magnetic field. When current flow in the primary winding is stopped (by the
power transistor breaking the circuit ground), the collapse of the magnetic field causes a Voltage to be induced in the secondary windings. The ratio of
turns in the primary windings to the number of turns in the secondary windings determines the Voltage step up.