| 释义 |
induction coil
induction coiln. 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.induction coil n (Electrical Engineering) a transformer for producing a high voltage from a low voltage. It consists of a cylindrical primary winding of few turns, a concentric secondary winding of many turns, and often a common soft-iron core. Sometimes shortened to: coil induc′tion coil`
n. a transformer that consists of two concentric coils wound on the same core and is used for producing high-voltage alternating current from low-voltage direct current. [1875–80] induction coil A type of transformer that changes a low-voltage direct current to a high-voltage alternating current. Induction coils are used for many purposes, such as firing spark plugs in automobile engines and starting oil burners.Thesaurus| Noun | 1. |  induction coil - a coil for producing a high voltage from a low-voltage sourcecoil - reactor consisting of a spiral of insulated wire that introduces inductance into a circuitignition coil - an induction coil that converts current from a battery into the high-voltage current required by spark plugsspark coil - an induction coil used to create sparksspark gap - the gap between two high-potential terminalstransformer - an electrical device by which alternating current of one voltage is changed to another voltage |
induction coil
induction coil a transformer for producing a high voltage from a low voltage. It consists of a cylindrical primary winding of few turns, a concentric secondary winding of many turns, and often a common soft-iron core induction coil[in′dək·shən ‚kȯil] (electromagnetism) A device for producing high-voltage alternating current or high-voltage pulses from low-voltage direct current, in which interruption of direct current in a primary coil, containing relatively few turns of wire, induces a high voltage in a secondary coil, containing many turns of wire wound over the primary. Induction coil A device for producing a high-voltage alternating current or high-voltage pulses from a low-voltage direct current. The largest modern use of the induction coil is in the ignition system of internal combustion engines, such as automobile engines. Devices of similar construction, known as vibrators, are used as rectifiers and synchronous inverters. See Ignition system The illustration shows a typical circuit diagram for an induction coil. The primary coil, wound on the iron core, consists of only a few turns. The secondary coil, wound over the primary, consists of a large number of turns. Induction coils of a different type are used in telephone circuits to step up the voltage from the transmitter and match the impedance of the line. The direct current in the circuit varies in magnitude at speech frequencies; therefore, no interrupter contacts are necessary. Still another type of induction coil, called a reactor, is really a one-winding transformer designed to produce a definite voltage drop for a given current. See Reactor (electricity) MedicalSeeinductorFinancialSeecoilinduction coil
Words related to induction coilnoun a coil for producing a high voltage from a low-voltage sourceRelated Words- coil
- ignition coil
- spark coil
- spark gap
- transformer
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