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Unread 01-06-2005, 07:19
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Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
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Re: Questions about magnets.

Quote:
Originally Posted by eugenebrooks
High permeability material, sold under the trade name "mu metal"
is used to shield magnetic fields.
Gene,
Do you have a source for mumetal, we are almost out of the sheet stock and I need to replenish but have only been half hearted about looking.

Ferro fluid is not a magnet it is ferrous metal particles suspended in a viscous liquid. It is most commonly used for speaker voice coil cooling. A few drops squirted into the gap between the voice coil and the magnet structure will do a great job of transferring heat to the magnet body and basket assy without changing the damping of the speaker.
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Al
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www.wildstang.org
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