coil

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coil:

see inductorinductor,
electric device consisting of one or more turns of wire and typically having two terminals. An inductor is usually connected into a circuit in order to raise the inductance to a desired value.
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; solenoidsolenoid
, device made of a long wire that has been wound many times into a tightly packed coil; it has the shape of a long cylinder. If current is sent through a solenoid made of insulated wire and having a length much greater than its diameter, a uniform magnetic field will be
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.

Coil

One or more turns of wire used to introduce inductance into an electric circuit. At power line and audio frequencies a coil has a large number of turns of insulated wire wound close together on a form made of insulating material, with a closed iron core passing through the center of the coil. This is commonly called a choke and is used to pass direct current while offering high opposition to alternating current.

At higher frequencies a coil may have a powdered iron core or no core at all. The electrical size of a coil is called inductance and is expressed in henries or millihenries. In addition to the resistance of the wire, a coil offers an opposition to alternating current, called reactance, expressed in ohms. The reactance of a coil increases with frequency. See Inductor

coil

[kȯil]
(control systems)
Any discrete and logical result that can be transmitted as output by a programmable controller.
(electromagnetism)
A number of turns of wire used to introduce inductance into an electric circuit, to produce magnetic flux, or to react mechanically to a changing magnetic flux; in high-frequency circuits a coil may be only a fraction of a turn. Also known as electric coil; inductance; inductance coil; inductor.
(science and technology)
An arrangement of flexible material into a spiral or helix.

Coil

One or more turns of wire used to introduce inductance into an electric circuit. At power line and audio frequencies a coil has a large number of turns of insulated wire wound close together on a form made of insulating material, with a closed iron core passing through the center of the coil. This is commonly called a choke and is used to pass direct current while offering high opposition to alternating current.

At higher frequencies a coil may have a powdered iron core or no core at all. The electrical size of a coil is called inductance and is expressed in henries or millihenries. In addition to the resistance of the wire, a coil offers an opposition to alternating current, called reactance, expressed in ohms. The reactance of a coil increases with frequency. See Inductor, Reactor (electricity)

heat exchanger

A device designed to transfer heat between two physically separated fluids; generally consists of a cylindrical shell with longitudinal tubes; one fluid flows on the inside, the other on the outside.

coil

1. an electrical conductor wound into the form of a spiral, sometimes with a soft iron core, to provide inductance or a magnetic field
2. the transformer in a petrol engine that supplies the high voltage to the sparking plugs
References in periodicals archive ?
As shown in Figures 12B and 14, TnT appeared to help break the 2-fold symmetry of the coiled-coil structure by binding only to one of two [alpha]-helices of splayed TM-N, and by binding only to the L-arm (kinked [alpha]-helix) of TM-C.
2007) Crystal structures of tropomyosin: Flexible coiled-coil.
1953) The packing of [alpha]-helices: Simple coiled-coils.
The amino terminal regions of proBNP and proANP oligomerize through leucine zipper-like coiled-coil motifs.
Structural assignment (a) Experimental 2[degrees] 3[degrees] technique structure structure SE-HPLC NA (b) Extended, nonglobular Sedimentation equilibrium ultracentrifugation NA NA CD Random coil, no helix NA Structural assignment (a) Experimental 4[degrees] Coiled-coil technique structure SE-HPLC NA NA Sedimentation equilibrium ultracentrifugation Monomer, not trimer No CD NA No (a) 2[degrees] structure refers to helix, [beta]-sheet, or random coil content; 3[degrees] structure refers to the overall three-dimensional shape of the molecule; and 4[degrees] structure refers to the putative state of association of individual molecules.