Ignition coils are a critical part of a vehicle’s ignition system. They take the low-voltage battery current and transform it into a much higher voltage so that the spark plugs can spark more efficiently. In order to do this, ignition coils are made up of two circuits: a primary circuit and a secondary circuit. Understanding how these circuits work together is key to maintaining proper ignition coil performance.
The primary circuit is the main ignition circuit, and it consists of three components: the ignition coil itself, the ignition switch, and the battery. The ignition coil is wired to the battery and the ignition switch. When the ignition switch is turned on, it allows a steady 12V current to flow from the battery, through the primary winding of the coil. This sets up an electromagnetic field within the coil that builds up in intensity.
When the ignition switch is released, the battery current stops flowing and the electromagnetic field collapses. This causes an electrical spark to be created across the coil’s secondary winding, which is connected to the spark plug. The spark is then sent to the spark plug, where it ignites the fuel and air mixture in the combustion chamber. This is what powers your vehicle.
It’s important to note that the primary and secondary circuits must be kept in balance in order for the ignition coil to work properly. If either circuit is not working correctly, the spark may be weak or nonexistent, causing your engine to misfire. This is why it’s important to have your ignition coils checked and replaced regularly by a professional mechanic.
With regular maintenance and care, your ignition coil should provide reliable performance for years to come. Knowing the basics of how an ignition coil works and what the primary and secondary circuits are will help you keep your vehicle running smoothly.
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