Re: Magnetic quenching.

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Richard Modistach" <hambone-at-dodo-dot-com.au> 

hi matthew,

good topic, i too have a huge stack of magnetron magnets,
but they are bulky, rare earth magnets, great but expensive,
best value i've found is oatley electronics in sydney,
for those who dont have acsess, magnets out of an old hard drive
are an exellent compromise, very strong and compact, and cheap,
just go to your local computer repairer and give them a cardboard
box with you name on it in bold texta and what it's for and ask
them to chuck any stuffed hard drives into it and watch it fill up.

regards
richard
aus


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, March 10, 2004 10:53 AM
Subject: Re: Magnetic quenching.


 > Original poster: Matthew Smith <matt-at-kbc-dot-net.au>
 >
 > Tesla list wrote:
 > >Original poster: "Christopher 'CajunCoiler' Mayeux" <cajuncoiler-at-cox-dot-net>
 > >Upon reflection of posts past, I remembered there was some talk of
 > >magnetic quenching for static gaps.  Would the toroidal magnets
 > >pulled from a magnetron tube be good for this purpose?  If so, how
 > >would one go about positioning them correctly in relation to the gap?
 >
 > I am also interested - I believe that this thread "fizzled out" last
 > time.  I had even collected a large number of magnetron magnets, although
 > these are now in service on our refrigerator door.
 >
 > Tackled magnets in grammar school (high school) physics, but hardly
touched
 > on them doing EE at college, except in specific applications.  In other
 > words, I can remember very little about them.
 >
 > I assume that the amount of quench would be directly proportional to the
 > amount of magnetic flux.  How does one increase the flux - stack of
magnets
 > in series with iron pole pieces to either side of the gap?
 >
 > Trick question: does the north of a compass needle point to the north or
 > the south pole of a magnet?  I would say it would point to the SOUTH of
the
 > magnet.
 >
 > Cheers
 >
 > M
 >
 > --
 > Matthew Smith
 > Kadina Business Consultancy
 > South Australia
 > http://www.kbc-dot-net.au
 >
 >
 >
 >