define coil
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- coil (plural coils) Something wound in the form of a helix or spiral. the sinuous coils of a snake. Washington Irving The wild grapevines that twisted their coils from tree to tree. Any intrauterine device (Abbreviation: IUD)—the first IUDs were coil-shaped.
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- All (electrical) coils are the same, in that they are coils. All coils honor the same principles: investing electrical energy into a coil results in a magnetic field. Investin … g magnetic energy into a coil results in an electric current. But, different coils serve different purposes. For example, a coil in an electromagnet is used to magnify the magnetic field surrounding a wire that carries an electric current.
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- Quick review: The coil is a big transformer with a magnetic core. Current from the battery goes into the primary winding on Terminal #15. That same current goes out Terminal #1 and through the point contacts. This current creates a magnetic field in the core of the coil.
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Helmholtz coil A Helmholtz pair consists of two identical circular magnetic coils (solenoids) that are placed symmetrically along a common axis, one on each side of the experimental area, and separated by a distance equal to the radius of the coil.elmholtz coils (hoops) on three perpendicular axes used to cancel the Earth's magnetic field inside the vacuum tank in a 1957 electron beam experiment. To improve the uniformity of the field in the space inside the coils, additional coils can be added around the outside.
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ignition coil ignition coil - an induction coil that converts current from a battery into the high-voltage current required by spark plugs. 1  ignition system, ignition - the mechanism that ignites the fuel in an internal-combustion engine. 2  induction coil - a coil for producing a high voltage from a low-voltage source.
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What are some symptoms of ignition coil failure? One of the coils is referred to as the primary coil, and the secondary coil wraps around it. There are hundreds of times more turns of wire on the secondary coil than on the primary coil. The battery's current runs through the primary coil.
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Coil Electromagnetic coil, formed when a conductor is wound around a core or form to create an inductor or electromagnet Ignition coil, an electromagnetic induction coil used in internal combustion engines to create a pulse of high voltage for a spark plug.
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Definition of 'reluctance' The magnetic flux created by the field windings follows the path of least magnetic reluctance. An excessive current may be due to a partial short circuit between one or more turns in the winding or it may be due to some defects in the magnetic circuit which alter the reluctance of the core. The reluctance of a magnetic material is its ability to oppose the flow of magnetic flux.
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- 1. armature-coil in which voltage is induced by motion through a magnetic field. coil-reactor consisting of a spiral of insulated wire that introduces inductance into a circuit. electric motor-a motor that converts electricity to mechanical work.
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- The coil with the most turns will have the ability for the largest magnetic Flux. Flux is a product of the number of turns and the current. In fact you may find that you can reduce the current and still produce. the Flux necessary for your ible. So the coil with the most turns has the best chance of operating cooler. If you need more Flux you can add a NIB round (same diameter as the bolt) permanent magnet making the coil run cooler.
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Electromagnetic coil 1 Degaussing coil-a coil used to demagnetize parts. 2  Voice coil-a coil used in a moving-coil loudspeaker, suspended between the poles of a magnet. 3  When the audio signal is passed through the coil, it vibrates, moving the attached speaker cone to create sound waves.
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What are some symptoms of ignition coil failure? Your car engine has a coil, which is basically a high-voltage transformer composed of two wire coils. One of the coils is referred to as the primary coil, and the secondary coil wraps around it. There are hundreds of times more turns of wire on the secondary coil than on the primary coil. The battery's current runs through the primary coil.
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What Does an Ignition Coil Do? An ignition coil is a coil in a car's ignition system that carries the 6 or 12 volts from the battery to the many volts used to spark the spark plugs in the ignition. An ignition coil is also called a spark coil, and is classified as an induction coil.
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What is a coil in an engine? The ignition coil is basically a Tesla coil that supplies the ignition spark for your spark plugs. Stock runs about 20,000 volts. After market versions are sold that run about 40,000 volts. I would say to check your spark plugs and wires first as I have never seen a coil act like that.
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What is a Choke Coil? Top 10 facts about the world. A choke coil is a part used in electrical circuits to allow DC current to flow through while blocking AC current from passing. These coils are used in a number of electrical devices. When used as part of a radio’s circuitry, it falls into one of two frequency classes: audio or radio.
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Electromagnetic coil Either an electric current is passed through the wire of the coil to generate a magnetic field, or conversely an external time-varying magnetic field through the interior of the coil generates an EMF (voltage) in the conductor.
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What is an Ignition Coil? Generating thousands of volts, the ignition coil sends energy in the form of an electric spark to the spark plugs. This spark is what is used to ignite the air and fuel mixture and start the engine and keep it running.
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What is a Tesla coil? A Tesla coil is a device that uses resonant circuits and alternating current to produce extremely high voltages. Originally invented by Nikola Tesla in the late 1800s, Tesla coils have progressed from spark-gap circuits to designs involving modern solid-state switching devices such as MOSFETs and IGBTs.park gap coils use an air gap to control the primary current. Using a transformer (often a neon sign transformer or “NST”) , a primary capacitor is charged to a high voltage. When the voltage is high enough, the spark gap breaks down, ionizing the air between the terminals and forming a short circuit.
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What is an inductor and how is it used? An inductor, also called a coil or reactor, is a passive two-terminal electrical component which resists changes in electric current passing through it. It consists of a conductor such as a wire, usually wound into a coil. When a current flows thr...
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Electric Coils - Electric Motor Coils Electric Coils - Electric Motor Coils. Stimple and Ward is a leading electric coil manufacturer specializing in electric motor coils for industrial, power generation and transportation applications both AC and DC. Our electric coil products are designed for a large variety of motors and controls.
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Coil Inductance Calculator The coil is the most recognizable form of an inductor. This tool is designed to calculate the inductance of a coil of wire given the number of turns, the loop diameter, wire diameter, and the permeability of the medium. Note that you can choose the unit of measurements for the loop diameter and wire diameter.
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Autotransformer The secondary coil is the one in which a voltage is induced by electromagnetism, or the 'output'. In a step u … p transformer, the secondary coil voltage is higher than the primary. In a step down transformer, the secondary coil voltage is lower than the primary.
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Rogowski coil A Rogowski coil, named after Walter Rogowski, is an electrical device for measuring alternating current (AC) or high speed current pulses.his type of coil has advantages over other types of current transformers. 1  It is not a closed loop, because the second terminal is passed back through the center of the toroid core (commonly a plastic or rubber tube) and connected along the first terminal.
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Ignition Coils & Coil Packs Ignition Coil Packs. Coil packs are a group of ignition coils that are physically connected together, but provide one ignition coil per cylinder. They are controlled by a computer, which means that distributors, points, and condensers are not needed.
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- A spiral is a coil or curl, like the shape of a piece of hair wound around your finger, a Slinky toy, or a corkscrew. A curve forming a series of circles that become gradually larger or smaller is one kind of spiral. Primary Meanings of spiral.
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coil Definitions of coil. v. t. - To wind cylindrically or spirally; as, to coil a rope when not in use; the snake coiled itself before springing. v. t. - To encircle and hold with, or as with, coils. v. i. - To wind itself cylindrically or spirally; to form a coil; to wind; -- often with about or around. n. - A ring, series of rings, or spiral, into which a rope, or other like thing, is wound. n. - Fig.: Entanglement; toil; mesh; perplexity.