What is that cylinder on cables?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Hypnotic Puzzle3

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Chapters
00:00 Question
00:37 Accepted answer (Score 37)
02:05 Answer 2 (Score 51)
03:14 Answer 3 (Score 18)
03:28 Answer 4 (Score 12)
04:05 Thank you

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Full question
https://superuser.com/questions/217772/w...

Accepted answer links:
[EMC (electromagnetic compatibility) directive]: http://ec.europa.eu/enterprise/sectors/e.../
[Ferrite Beads]: https://en.wikipedia.org/wiki/Ferrite_be...

Answer 2 links:
http://computer.howstuffworks.com/questi...

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Content licensed under CC BY-SA
https://meta.stackexchange.com/help/lice...

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Tags
#cable

#avk47