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High Powered Demagnetizer

High Powered Demagnetizer

High Powered Demagnetizer

(OP)
I need to design a high-powered demgnetizer that will be line-powered (120-240VAC, 50-60 Hz). Is there any good reference material on the subject?

RE: High Powered Demagnetizer

Most of these devices are just a coil and in some cases include an iron core.  I cannot picture any that would allow 'both' voltage operation.   You may be able to use a 240V unit at 120V.  It may be far less effective in that case.

Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com

RE: High Powered Demagnetizer

If there's just a coil, it would probably work better at 240V.  At least it might work better until it got so hot that it melted itself down.  :)

Many of them have a PTC in series to limit the current.  

Rich, you might have more success if you Google "degaussing" rather than "demagnetizing".

RE: High Powered Demagnetizer

Two coils, each 120V, connected in parallel for 120V and in series for 240V would work.

RE: High Powered Demagnetizer

Degaussing: For removal of unintentional residual magnetism. Like a TV screen.

Demagnetizing: For removing the field of a magnet.  Or erasure of magnetic storage media.  See also "Bulk Eraser".

Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com

RE: High Powered Demagnetizer

You might want to move this to a group on ships or military topics.  Submarines are degaused requrlarly.
It's not done with 120/240 volts I am pretty sure.  You can get a 240 volt welder that will put out 200 amps DC but that would not be considered "high powered" if your demagnatizing a submarine.

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