Re: [femm] nonferrous electromagnets

[David Meeker <dmeeker@xxxxxxxxxxxxxxxxx>]

sunshine_80918@xxxxxxxxx wrote:

> Hi all. Been thinking about a project involving nonferrous
> electromagnets, attracting metal with low electrical resistance like
> copper, alluminum, gold etc... Want to know if anyone here knows
> anything or has any experience with this subject. I have searched
> the archives and found no mention and what I did find did not
> understand much. I have a book on order about how to make one,
> just being impatient and thought someone might know from
> experience. Thanks for your time, Mark

In most applications in which a coil acts on nonferrous objects, the forces
are repulsive rather attractive. A nice paper that describes this phenomenon
is http://members.aol.com/marcttpapers/ieee_potentials_2000.pdf

Dave.




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