![]() Voltages in the 200Volt range are more common for lower end systems) some 500 times a second when the engine is running fast. The primary difference between an ignition coil and a coil pack is that an ignition coil acts as an amplifier, creating a high voltage to assist the spark plug to start the engine, whereas a coil pack is a group of ignition. ![]() In a car engine the coil may be pulsed by up to 312 volts (for high performance ignition systems. Nevertheless, the coil pack is an updated version of the ignition coil with state-of-the-art technology and features. When this current is removed, the field collapses and induces a current on the secondary coil, which consists of several tens of thousands of hair thin wire This induced current appears as a high voltage pulse (a product of the ratio of turns between primary and secondary and of the field's rise time), which in engines is used to fire the spark plug and ignite the air/fuel mixture inside the combustion chamber. When a current is pulsed into the primary winding (which consists of a couple hundred turns of relatively thick wire), it sets up a magnetic field around it and the coil's core. ![]() Introduction: Car Ignition coils (there are other kinds, such as motorcycle and boat coils, but the ones made for automotive engines are the largest) consist of two windings: A primary and a secondary, wrapped around a core (usually multi layered silicone steel) and encapsulated in some insulating material (epoxy or oil are normally used). ![]()
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