High Powered Demagnetizer

[RICH535]

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?

 

[MacGyverS2000]

Define "high-powered"...

Dan - Owner

http://www.Hi-TecDesigns.com

 

[itsmoked]

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

 

[geekEE]

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".

 

[davidbeach]

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

 

[itsmoked]

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

 

[BJC]

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.

 

[itsmoked]

DC? Sounds like a "magnetizer"!

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com