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 ?
Because of the electromagnetic coils, ion current density and ion current energy can be controlled independently.
Parts are placed in a vacuum chamber, and then an electron beam is scanned across the part surface through the use of a series of electromagnetic coils. The beam of electronics knocks secondary electrons off the surface of the part, which are amplified, then displayed on a cathode-ray tube.
With electromagnetic coils to move the piston and temperature probes in the measurement chamber, all are accurate to [+ or -]1.0% and repeatable to 0.8% to help prevent correlation errors.
A team led by Energy Industries of Ohio, Inc., of Independence, Ohio, has been selected to manufacture the winding forms upon which unique, modular electromagnetic coils will be mounted.
"Our main contribution is the electromagnetic coils in the bearings that can withstand high amounts of heat, allowing aircraft engines to run at optimal levels," Hunt said.
Three pairs of electromagnetic coils the size of bicycle rims generate the magnetic fields surrounding the clamped ribbon.
Contract award notice: : supply of shielded chambers and electromagnetic coils under the eva 4.0 project
This magnetic bearing provides constraint in two orthogonal radial directions by means of actively controlled electromagnetic coils, whereas axial movements and all other degrees of freedom (except flywheel spin) are constrained by means of permanent magnets only.
the stato's six permanent magnets and the flotor's electromagnetic coils. A set of light-emitting diodes and light sensors keeps track of the flotor's position and feeds this information to a powerful computer designed specifically for the magic wrist.
The subject of delivery is the delivery and installation of electromagnetic shielded chamber and two electromagnetic coils with accessory to the Etolithic and Eko-Etological Laboratory within the framework of the Excellent Research project as Support of Adaptation of Forestry and Wood Industry to Global Change and the 4th Industrial Revolution.

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