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Fan Magnets

Discussion in 'General Electronics Discussion' started by Raven Luni, Feb 27, 2013.

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  1. Raven Luni

    Raven Luni

    798
    8
    Oct 15, 2011
    Greetings,

    I took apart a PC fan and found that the permanent magnet ring was really pretty pathetic. If I replaced this with neodynium magnets would it have an adverse effect on the coils or any other part of the circuit? Its basically a brushless motor controlled by a 'ftc s276' (a 4 pin component that apparently uses a hall effect sensor - most versions of the datasheet wont load properly)
     
  2. GreenGiant

    GreenGiant

    842
    6
    Feb 9, 2012
    depends on the location, as long as its not too close to the hard drive (spinning disc) it should be fine, I havent done any direct replacements like that, but I have hear of it before
     
  3. Externet

    Externet

    759
    165
    Aug 24, 2009
    Before replacing the pathetic magnet ring, check its poles locations, by passing a sewing needle all around it. (or iron filings) You may be surprised of the poles pattern; which you will hardly duplicate by hand with neodymium magnets.
     
  4. Raven Luni

    Raven Luni

    798
    8
    Oct 15, 2011
    Already done that - 4 poles (NSNS), easy to duplicate I'd say :)
     
  5. Externet

    Externet

    759
    165
    Aug 24, 2009
    And the fan runs better, worse or the same ?
     
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