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Iron Sphere in a Time-Varying Magnetic Field

Iron Sphere in a Time-Varying Magnetic Field. A sphere of iron is placed into a harmonically time-varying magnetic field at 60Hz, 20kHz, and 13.56MHz As the frequency increases, the skin depth decreases Different modeling approaches are demonstrated for each case

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Iron Sphere in a Time-Varying Magnetic Field

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  1. Iron Sphere in a Time-Varying Magnetic Field • A sphere of iron is placed into a harmonically time-varying magnetic field at 60Hz, 20kHz, and 13.56MHz • As the frequency increases, the skin depth decreases • Different modeling approaches are demonstrated for each case • Induced currents and losses are computed http://www.comsol.com/showroom/gallery/12831/ http://www.comsol.com/showroom/gallery/12835/ http://www.comsol.com/showroom/gallery/12841/

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