Re-Magnetizing Old Magnets ?

  • 2 Replies
  • 3073 Views

0 Members and 1 Guest are viewing this topic.

*

Offline neilep

  • Withdrawnmist
  • Naked Science Forum GOD!
  • *******
  • 20602
    • View Profile
Re-Magnetizing Old Magnets ?
« on: 26/12/2007 20:30:03 »
Hi All,

Happy Whatever !!

Is it possible to re-magnetize old magnets ?...how is it done ?..can I do it here at home or do I need to take it to "Re-Magntetize Magnets R Us ?"

Thanks

Neil
xxxxxx
Men are the same as women, just inside out !

*

lyner

  • Guest
Re-Magnetizing Old Magnets ?
« Reply #1 on: 26/12/2007 22:46:28 »
All you need is an enormously strong electromagnet and put your old magnet between its poles for a second or so.
Where I used to work they had one for magnetising loudspeaker magnets.

*

Offline syhprum

  • Neilep Level Member
  • ******
  • 3921
    • View Profile
Re-Magnetizing Old Magnets ?
« Reply #2 on: 27/12/2007 11:19:34 »
Not to reccomended but when I was a boy and had only the AC mains supply as a source of power (no silicon diodes in the thirties) I used to boost the strength of the magnets in 120 ohm GPO earpieces by flicking the mains supply across the coils until I got the right part of the cycle, a matter of trial and error.
syhprum