Building magnet-magnetizer

[jean]

I've got a old electro therapy machine from 1850. It is a simple
horse-shoe magnet with 2 coils rotating in front of it. But the magnet is
weakend after 153 year. I want to build a magnet-magnetizer. Can somebody
help me with tips suggestions or mabye even plans.

Thanks

Jean

 

[Al]

I've got a old electro therapy machine from 1850. It is a simple
horse-shoe magnet with 2 coils rotating in front of it. But the magnet is
weakend after 153 year. I want to build a magnet-magnetizer. Can somebody
help me with tips suggestions or mabye even plans.

Thanks

Jean

When I was a kid, I magnetized my screwdrivers by placing them in a
solonoid and sparking a 6V lantern battery across the terminals of the
coil. Made them strong enough to pick up nails and screws.

Al

 

[Tweetldee]

When I was a kid, I magnetized my screwdrivers by placing them in a
solonoid and sparking a 6V lantern battery across the terminals of the
coil. Made them strong enough to pick up nails and screws.

Al

Yuppp that's almost what I was going to suggest. My thought was to remove
the magnet and wind as many turns of 16 or 18 gauge wire around it as will
fit. Then get a high current power supply, one that can put out several
amps of current at around 5 volts or so. Apply the current to the winding
for a few seconds and see if it increased the strength. If the strength
seems lower, reverse the polarity of the power supply connection and try
again.
Don't know how long to suggest that the current be applied.. A word of
caution here... be sure that the power supply you use has current limiting,
or at least some form of short circuit protection. The reason being that
the winding will present a very low resistance load and could damage an
unprotected power supply.
Cheers!!!
--
Tweetldee
Tweetldee at att dot net (Just subsitute the appropriate characters in the
address)

Never take a laxative and a sleeping pill at the same time!!

 

[Watson A.Name - Watt Sun, Dark Remover]

I've got a old electro therapy machine from 1850. It is a simple
horse-shoe magnet with 2 coils rotating in front of it. But the magnet is
weakend after 153 year. I want to build a magnet-magnetizer. Can somebody
help me with tips suggestions or mabye even plans.

You just wind a lotta turns of wire around the magnet poles, and put
DC thru the wire. Make sure you get the polarity right. If you use
very heavy wire, you could probably do the job with a car battery.

Thanks

Jean

--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@

 

[Garrett Mace]

I've got a old electro therapy machine from 1850. It is a simple
horse-shoe magnet with 2 coils rotating in front of it. But the magnet is
weakend after 153 year. I want to build a magnet-magnetizer. Can somebody
help me with tips suggestions or mabye even plans.

Thanks

Jean

It might be interesting to find out how it was originally done in 1850, then
try to duplicate that.

 

[Robert Monsen]

You just wind a lotta turns of wire around the magnet poles, and put
DC thru the wire. Make sure you get the polarity right. If you use
very heavy wire, you could probably do the job with a car battery.

AC with a diode also works. AC without the diode makes a dandy demagnitizer.

 

[Art]

Old Theory includes holding at a specific angle and striking with a heavy
hammer, or placing soft iron in close proximity with natural "Lodestone"
out-cropping. BTW during that period there was a plethora of DC power
supplies use and inductors. Not totally ancient history. Alex Gra Bell's
period, Eh.

 

[R. Steve Walz]

When I was a kid, I magnetized my screwdrivers by placing them in a
solonoid and sparking a 6V lantern battery across the terminals of the
coil. Made them strong enough to pick up nails and screws.

Al

--------------
Take the permanent magnet out and heat it red hot with torches and
then slip electromagnets around it and sustain a powerful field till
it cools well below the glowing stage into the deep IR.

-Steve