coil : Idioms & Phrases


astatic coils

  • noun an arrangement of coils used in sensitive electrical instruments; the coils are arranged to give zero resultant external magnetic field when a current passes through them and to have zero electromotive force induced in them by an external magnetic field
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choke coil

  • noun a coil of low resistance and high inductance used in electrical circuits to pass direct current and attenuate alternating current
    choke coil; choke.
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choking coil

  • noun a coil of low resistance and high inductance used in electrical circuits to pass direct current and attenuate alternating current
    choke coil; choke.
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coil spring

  • noun a spring in the shape of a coil
    volute spring.
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field coil

  • noun the electric coil around a field magnet that produces the magneto motive force to set up the flux in an electric machine
    field winding.
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Flemish coil

  • a flat coil of rope with the end in the center and the turns lying against, without riding over, each other.
Webster 1913

ignition coil

  • noun an induction coil that converts current from a battery into the high-voltage current required by spark plugs
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Induction coil

  • noun a coil for producing a high voltage from a low-voltage source
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  • an apparatus producing induced currents of great intensity. It consists of a coil or helix of stout insulated copper wire, surrounded by another coil of very fine insulated wire, in which a momentary current is induced, when a current (as from a voltaic battery), passing through the inner coil, is made, broken, or varied. The inner coil has within it a core of soft iron, and is connected at its terminals with a condenser; called also inductorium, and Ruhmkorff's coil.
Webster 1913

moving-coil galvanometer

  • noun a galvanometer that is operated by the force exerted by an electric current flowing in a movable coil suspended in a magnetic field
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Pedestal coil

  • (steam Heating), a group of connected straight pipes arranged side by side and one above another, used in a radiator.
Webster 1913

primary coil

  • noun coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit
    primary; primary winding.
    • current through the primary coil induces current in the secondary coil
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Resistance coil

  • (Elec.), a coil of wire introduced into an electric circuit to increase the resistance.
Webster 1913

rotor coil

  • noun the rotating armature of a motor or generator
    rotor.
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Ruhmkorff's coil

  • (Elec.), an induction coil, sometimes so called from Ruhmkorff a prominent manufacturer of the apparatus.
Webster 1913

Secondary circuit, Secondary coil

  • (Elec.), a circuit or coil in which a current is produced by the induction of a current in a neighboring circuit or coil called the primary circuit or coil.
Webster 1913

secondary coil

  • noun coil such that current is induced in it by passing a current through the primary coil
    secondary winding; secondary.
WordNet

spark coil

  • noun an induction coil used to create sparks
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stator coil

  • noun mechanical device consisting of the stationary part of a motor or generator in or around which the rotor revolves
    stator.
WordNet

Steam coil

  • a coil of pipe, or collection of connected pipes, for containing steam; used for heating, drying, etc.
Webster 1913

tesla coil

  • noun a step-up transformer with an air core; used to produce high voltages at high frequencies
WordNet

tickler coil

  • noun a small coil in series with the anode of a vacuum tube and coupled to the grid to provide feedback
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