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Magnet Shapes

Discussion in 'Home Power and Microgeneration' started by Danno, Feb 5, 2005.

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  1. Danno

    Danno Guest

    Surfing through Ebay recently, found several merchants for neodymium magnets,
    many shapes and sizes or magnets. Have considered trying my hand at making
    an alternator/generator, say a smaller version of Hugh Piggot's stuff, perhaps
    using the picoturbine designs.
    I'm wondering if magnet shape makes a difference? The examples I see on
    Piggot's site use a thin rectangular magnet laying flat, but the shapes
    available are cubes, "thick" rectangles, spheres, discs, thick discs, rings,
    cyclinders etc. Virtually any symmetrical shape looks available. My gut tells
    me that a long thin magnet is the way to go; I'm looking at an inexpensive set
    of 10 cylindrical-shaped magnets, 7/16" radius x 1.5" length. Am I correct in
    assuming that these would be better than similar magnets of only 0.5" length?
    TIA
     
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