Coil

From Academic Kids

A coil is a series of loops.

Contents

General applications

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A helical spring.

A coil is made of rigid materials which can fashioned into a spiral or helical shape. Flexible materials like wire, rope, hose, or cable can also be coiled into empty loops, or wound around a central drum or spindle.

Some common applications of coils include:

See also: list of coil knots

Electromagnetic

Typical transformer configurations
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Typical transformer configurations

In electrical engineering, a electromagnetic coil is formed when a metallic or conductive wire is looped around a core to create an electronic inductor or electromagnet. A transformer coil has a primary coil and a secondary coil that transfers energy from one electrical circuit to another by magnetic coupling without moving parts. An extra coil (sometimes referred to as a tickler coil) is usually a third coil placed in relation to a primary coil and secondary coil.

Some common electromagnetic coils include:

Further reading

  • Querfurth, William, "Coil winding; a description of coil winding procedures, winding machines and associated equipment for the electronic industry" (2d ed.). Chicago, G. Stevens Mfg. Co., 1958.
  • Weymouth, F. Marten, "Drum armatures and commutators (theory and practice) : a complete treatise on the theory and construction of drum winding, and of commutators for closed-coil armatures, together with a full résumé of some of the principal points involved in their design; and an exposition of armature reactions and sparking". London, "The Electrician" Printing and Publishing Co., 1893.
  • "Coil winding proceedings". International Coil Winding Association.
  • Chandler, R. H., "Coil coating review, 1970-76". Braintree, R. H. Chandler Ltd, 1977.

Chemistry

 RNA coil on the left and DNA coil on the right.
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RNA coil on the left and DNA coil on the right.

In the study of how molecules interact with each other, there are a few specific references to organic coils. During self-assembly, organic elements organize to form this structural pattern. Molecular self-assembly assembles the molecules, without guidance or management from an outside source, into these shapes.

Examples of these structural patterns include:


As an acronym, COIL denotes the Chemical Oxygen Iodine Laser.

Other uses

Musician names

"Coil" is, or is part of, the name for some musicians or their albums.

Name

Publication

cs:Cívka (rozcestník)

da:Spole de:Spule pt:Bobine ja:巻線

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