What is the role of the secondary circuit in an ignition system?

The secondary circuit in an ignition system plays a vital role in delivering the spark to the spark plug. When the ignition system is activated, the primary circuit generates a low-voltage signal that energizes the ignition coil. This coil then transforms the low voltage into a high-voltage surge through the secondary circuit. The high voltage produced is sent to the spark plug, which ignites the air-fuel mixture in the combustion chamber.

This delivery mechanism is crucial because the spark plug must receive a sufficiently strong spark to ensure reliable engine ignition. If the spark were to be weak or not delivered properly, it would lead to misfires or failures in starting the engine.

Understanding this role of the secondary circuit helps clarify the overall functioning of ignition systems in small engines, highlighting how essential it is for proper engine operation and performance.