Induction-coil meaning

A transformer, often used in automotive ignition systems, in which an interrupted, low-voltage direct current in the primary is converted into an intermittent, high-voltage current in the secondary.
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An apparatus made up of two magnetically coupled coils in a circuit in which interruptions of the direct-current supply to one coil produce a high-voltage alternating current in the other.
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An electrical device consisting of a single coil of conductive material, often surrounding a metallic core, designed to establish a strong magnetic field around the coil. Changes in the current flow through the coil cause fluctuations in the magnetic field that induce a voltage across the coil. Induction coils have many applications, especially in circuits that tune to signals of specific frequencies, as in radios. The ability of an induction coil to induce a voltage is called inductance , and is measured in henrys.
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A type of transformer that changes a low-voltage direct current to a high-voltage alternating current. Induction coils are used for many purposes, especially as spark coils for firing spark plugs in automobile engines and starting oil burners.
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A transformer that produces a high voltage alternating current pulse from a low voltage direct current supply, especially such a device in the starter motor of an automobile.
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