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 ?
Our legs and knee are more prominent to such injuries, for such cases, knee coils are used.
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In the presented case, our patient had two thrombotic events induced by the migrated coil. Considering the high risk of thrombotic recurrence, the indication for long-term oral anticoagulant therapy, and the fact that the patient excluded from the beginning the alternative of a surgical extraction, delayed coil retrieval via percutaneous approach was attempted.
The distribution of the magnetic field (H-field) when an AC current at 13.56 MHz is applied to the transmit coil and the receive coil is located at a certain distance away from the z-axis.
While the primary intent of the coil bypass is to maintain total air turnover and relative humidity in the space with an elevated supply air dry-bulb temperature to minimize reheat, the control sequence must include a number of over-rides to address compliance failure for each of the above parameters in each of the several zones supplied by the air-handling unit.
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Rooftop packaged unit on a with major hail damage to the condenser coil. (Photo: HVACi)
The UVC measurements indicate that only a fraction of energy irradiating the face of a coil make it deep into the coil's interstitial space.
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The purchase is in line with Coil's strategy to improve quality and enhance its product portfolio, Coil said.
View Global Coil Tubing Market Report with Table Of Content @ http://www.grandviewresearch.com/industry-analysis/coil-tubing-market