Re: gEDA-user: Electromagnetic bike

[Rob Butts <r.butts2@xxxxxxxxx>]

   So if I have an electromagnetic and I hold it next to the spinning
   metal disc as I increase the intensity of the magnetic field the metal
   disc should be harder to spin?

   Define conductive? The eddy current breaks says non-ferromagnetic which
   means to me not having any magnetic properties like aluminum.

   I'm strictly interested in generating the magnetic resistance.

   On Thu, Sep 8, 2011 at 11:11 PM, Geoff Swan <[1]shinobi.jack@xxxxxxxxx>
   wrote:

     I've not looked into this in great detail myself, but I believe this
     physics suggests this could be as simple as a spinning metal
     (conductive) disk with a permanent magnet at an adjustable distance
     to
     the spinning disk. It sounds like you understand how it works, but
     are
     perhaps looking for the catch? I don't believe there is one...
     Note this works only as brake - however if you want the same
     phenomenon to work as a motor you are looking at a squirrel cage
     motor
     ([2]http://en.wikipedia.org/wiki/Induction_motor).

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References

   1. mailto:shinobi.jack@xxxxxxxxx
   2. http://en.wikipedia.org/wiki/Induction_motor
   3. mailto:geda-user@xxxxxxxxxxxxxx
   4. http://www.seul.org/cgi-bin/mailman/listinfo/geda-user


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