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Electromagnet: Current or Voltage??

Discussion in 'Electronic Basics' started by Randy Gross, Sep 5, 2005.

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  1. Jasen Betts

    Jasen Betts Guest

    this is not a new idea, the fans, inside your PC work on this principle...
    permanent magnets on the rotor, and and tre field switched eklectronically.
    13 degrees, (and presumably another 13 degrees with reversed polarity later
    on) that's about 7% duty cycle

    from my calculations yesterday I wouldn't want to see the motor stall for
    more than a few seconds, but once it's running at speed there's be a back
    emf that'll reduce the current and stop the electromagnets from frying.

    sam ciarametaro likes this.
  2. John Fields

    John Fields Guest

    sam ciarametaro likes this.
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