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  2. Coil winding technology - Wikipedia

    en.wikipedia.org/wiki/Coil_winding_technology

    This winding method reaches the highest fill factor and is the best way to fill the available winding cross-section with round wires. Square coils are seen as orthocyclically wound when the winding and layer jump occur only on one of the sides of the winding cross-section. In theory, a geometric fill factor of 0.91 will be reached.

  3. Electromagnetic coil - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_coil

    A coil with a core which is a straight bar or other non-loop shape is called an open-core coil. This has lower magnetic field and inductance than a closed core, but is often used to prevent magnetic saturation of the core. A coil without a ferromagnetic core is called an air-core coil. [14]

  4. Skin effect - Wikipedia

    en.wikipedia.org/wiki/Skin_effect

    Skin depth also varies as the inverse square root of the permeability of the conductor. In the case of iron, its conductivity is about 1/7 that of copper. However being ferromagnetic its permeability is about 10,000 times greater. This reduces the skin depth for iron to about 1/38 that of copper, about 220 micrometers at 60 Hz. Iron wire is ...

  5. Magnet wire - Wikipedia

    en.wikipedia.org/wiki/Magnet_wire

    Inductor made with magnet wire wound around a toroidal core. Magnet wire [1] or enameled wire is a copper or aluminium wire coated with a very thin layer of insulation.It is used in the construction of transformers, inductors, motors, generators, speakers, headphones, hard disk head actuators, electromagnets, electric guitar pickups, and other applications that require tight coils of insulated ...

  6. Helmholtz coil - Wikipedia

    en.wikipedia.org/wiki/Helmholtz_coil

    A Helmholtz coil Helmholtz coil schematic drawing. A Helmholtz coil is a device for producing a region of nearly uniform magnetic field, named after the German physicist Hermann von Helmholtz. It consists of two electromagnets on the same axis, carrying an equal electric current in the same direction. Besides creating magnetic fields, Helmholtz ...

  7. Shaded-pole motor - Wikipedia

    en.wikipedia.org/wiki/Shaded-pole_motor

    A shaded-pole motor is a motor, in which the auxiliary winding is composed of a copper ring or bar surrounding a portion of each pole to produce a weakly rotating magnetic field. [2] When single phase AC supply is applied to the stator winding, due to shading provided to the poles, a rotating magnetic field is generated.

  8. Deflection yoke - Wikipedia

    en.wikipedia.org/wiki/Deflection_yoke

    Cathode ray tube, showing the yoke (copper coils and white plastic former) around the rear neck of the tube. A deflection yoke is a kind of magnetic lens, used in cathode ray tubes to scan the electron beam both vertically and horizontally over the whole screen. In a CRT television, the electron beam is moved in a raster scan on the screen. By ...

  9. Microcoil - Wikipedia

    en.wikipedia.org/wiki/Microcoil

    At the same time the coil resistance will increase linearly, so the improvement in sensitivity will be proportional to the square root of the number of turns (n). At the same time we will have a larger ohmic heating at the center of the coil and an enhanced danger for arcing, so the optimum is generally found for only a limited number of turns.

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