**This is a replay from the old podcast series lost to the internet**
Original upload date: 15/04/2020
This episode is a quick discussion about how does an ignition coil work. All ignition coils work the same way using the process of electromagnetic inductance.
Ignitions coils are constructed using an iron core. This iron core is wrapped in thin wire called the secondary winding. The secondary winding is wrapped in a thicker wire called the primary winding and is normally with a lot less windings than the secondary winding.
Current and voltage is applied to the primary winding which produces a magnetic field. When a spark is required the supply to the primary winding is cut and the magnetic field collapses.
As the field collapses the magnetic flux line through the secondary winding creates a higher voltage (due to the increased windings). This higher voltage is directed to the plug and creates a spark.
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