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  2. Electropermanent magnet - Wikipedia

    en.wikipedia.org/wiki/Electropermanent_magnet

    An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by a pulse of electric current in a wire winding around part of the magnet. The magnet consists of two sections, one of "hard" (high coercivity) magnetic material and one of "soft" (low coercivity) material. The ...

  3. Magnet wire - Wikipedia

    en.wikipedia.org/wiki/Magnet_wire

    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 wire.

  4. Rare-earth magnet - Wikipedia

    en.wikipedia.org/wiki/Rare-earth_magnet

    Ferrofluid on glass, with a rare-earth magnet underneath. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements.Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets.

  5. Neodymium magnet - Wikipedia

    en.wikipedia.org/wiki/Neodymium_magnet

    Ring magnets Most hard disk drives incorporate strong magnets This manually-powered flashlight uses a neodymium magnet to generate electricity Neodymium magnets have replaced alnico and ferrite magnets in many of the myriad applications in modern technology where strong permanent magnets are required, because their greater strength allows the ...

  6. Horseshoe magnet - Wikipedia

    en.wikipedia.org/wiki/Horseshoe_magnet

    The shape of the magnet was originally created as a replacement for the bar magnet as it makes the magnetic field stronger for a magnet of comparable strength. [5] A horseshoe magnet is stronger because both poles of the magnet are closer to each other and in the same plane which allows the magnetic lines of flux to flow along a more direct path between the poles and concentrates the magnetic ...

  7. National High Magnetic Field Laboratory - Wikipedia

    en.wikipedia.org/wiki/National_High_Magnetic...

    The facility provides a wide variety of experimental capabilities to 100 Tesla, using short and long pulse magnets. Power comes from a pulsed power infrastructure which includes a 1.43 gigawatt motor generator and five 64-megawatt power supplies. The 1200-ton motor generator sits on a 4800-short ton (4350 t) inertia block which rests on 60 ...

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