What is one of the main components of an electric ignition system?

In an electric ignition system, one of the primary components is the step-up transformer. This device is crucial because it converts the battery's low voltage (typically 12 volts in automotive applications) to the high voltage required to create a spark at the spark plug. The high voltage is necessary to ensure that the electrical discharge is strong enough to jump across the spark plug gap and ignite the air-fuel mixture in the combustion chamber.

The step-up transformer achieves this by increasing the voltage while simultaneously decreasing the current, following the principles of electromagnetic induction. This transformation occurs within the ignition coil, which houses the primary and secondary windings of the transformer. When the ignition switch is activated, current flows through the primary winding, generating a magnetic field. As this magnetic field collapses, it induces a high voltage in the secondary winding, producing the spark needed for combustion.

This component is essential for the operation of any electric ignition system, making it vital for engine performance and efficiency.