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Old 01-01-2010, 09:42 PM   #1
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Default Magnet circles?

I tried a google search but I just get electromagnets.

What would be the use of putting a magnet or a... iron circle of some sort. Around an electrical wire?
I opened up my old printer to see would I could use or salvage and I seen almost everything in there has some sort of iron or magnet (if they are magnets they are very weak) around them.

Hell even some capacitors in there have a smaller circle of iron around one lead.
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Old 01-02-2010, 11:08 AM   #2
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Default Re: Magnet circles?

They are ferrite rings that help filter out high frequency noise.

Ferrite bead - Wiki
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Old 01-02-2010, 10:55 PM   #3
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Default Re: Magnet circles?

Quote:
Originally Posted by Atomic Rooster View Post
They are ferrite rings that help filter out high frequency noise.

Ferrite bead - Wiki
Oh wow, thank you. Never knew what the "box" was at the end of the usb cable lol.
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