Computer Related > Ferrite Core Miscellaneous
Thread Author: Robin O'Reliant Replies: 5
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New Wed 9 Sep 15 17:22 
 Ferrite Core - Robin O'Reliant
"A Ferrite Core for the USB cable is supplied with this machine" (Laser printer).

Well, I attached it as instructed but what the hell is it and why?
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New Wed 9 Sep 15 17:40 
 Ferrite Core - Bromptonaut
I believe it's intended to reduce possible radio interference but Zero or Slidingpillar will know far more than me.
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New Wed 9 Sep 15 19:16 
 Ferrite Core - spamcan61
>> I believe it's intended to reduce possible radio interference but Zero or Slidingpillar will know
>> far more than me.
>>

Adding one tends to be a last desperate throw of the dice to get an item of electronic equipment through conducted emissions tests (part of EMC testing to achieve CE/FCC compliance). Indeed I've had to use one for that very purpose in the last week!
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New Wed 9 Sep 15 18:13 
 Ferrite Core - VxFan
Google is your friend.

en.wikipedia.org/wiki/Ferrite_bead
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New Wed 9 Sep 15 18:22 
 Ferrite Core - Zero
>> Google is your friend.
>>
>> en.wikipedia.org/wiki/Ferrite_bead

says it all, tho it has to be said when i saw the thread title my thoughts went to

en.wikipedia.org/wiki/Magnetic-core_memory
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New Thu 10 Sep 15 16:04 
 Ferrite Core - Slidingpillar
Yes, the wiki article is right, if a trifle long-winded for most folk. They work well, and are easy to fit so go for it.

Magnetic core memories - I really wish I'd grabbed one from a skip at university in about 1980. Would have been good for the SP museum of technology.
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