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Author Topic: basic magnet tutorial  (Read 3765 times)

Offline mind

  • Newbie
  • *
  • Posts: 3
basic magnet tutorial
« on: January 18, 2008, 05:55:47 PM »
sorry my first post is a request!  i haven't finished building a working motor yet, but i'm getting there!

could someone point to or lay out some basics on magnets, such as:
specifically, which types are stronger than others.
also which metals and materials are attracted to magnets.
thanks


Offline mind

  • Newbie
  • *
  • Posts: 3
Re: basic magnet tutorial
« Reply #2 on: January 24, 2008, 12:44:53 AM »
i like this
http://www.dansdata.com/magnets.htm

i just ripped some magnets out of a harddrive.  these are sweet!
what is the material they are stuck to that insulates them???

Offline RunningBare

  • Hero Member
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  • Posts: 809
Re: basic magnet tutorial
« Reply #3 on: January 24, 2008, 01:40:00 AM »
i like this
http://www.dansdata.com/magnets.htm

i just ripped some magnets out of a harddrive.  these are sweet!
what is the material they are stuck to that insulates them???

If your talking about the metal, it's known as Mu-Metal, it has high permeability(highly attracted to magnets), it can be used as a shield, if you had a U shaped piece for instance and placed a magnet inside, then most of the flux is directed from one pole to the other, the mu-metal is effectively shorting out the poles.