+ Post New Thread
Results 1 to 5 of 5
General Chat Thread, USB etc Cables - what function does the 'lump' perform. in General; A friend recently asked me what that chunky little lump that appears on USB ect cables does. I have always ...
  1. #1
    speckytecky's Avatar
    Join Date
    May 2006
    Location
    UK
    Posts
    2,505
    Thank Post
    3,389
    Thanked 258 Times in 211 Posts
    Blog Entries
    3
    Rep Power
    110

    USB etc Cables - what function does the 'lump' perform.

    A friend recently asked me what that chunky little lump that appears on USB ect cables does. I have always assumed it's some sort of surge protection but couldn't give a defo answer?

  2. #2

    Join Date
    Jun 2009
    Location
    Watford
    Posts
    876
    Thank Post
    381
    Thanked 114 Times in 73 Posts
    Rep Power
    62
    It contains precious metal, which justifies the £14.99 price tag from some retailers ;-)

  3. #3

    AngryTechnician's Avatar
    Join Date
    Oct 2008
    Posts
    3,730
    Thank Post
    698
    Thanked 1,212 Times in 761 Posts
    Rep Power
    394
    If you're referring to what I think you are, it's called a ferrite bead and is to help reduce interference:

    Ferrite bead - Wikipedia, the free encyclopedia

  4. 2 Thanks to AngryTechnician:

    Rawns (6th January 2012), speckytecky (6th January 2012)

  5. #4

    GrumbleDook's Avatar
    Join Date
    Jul 2005
    Location
    Gosport, Hampshire
    Posts
    9,933
    Thank Post
    1,339
    Thanked 1,783 Times in 1,106 Posts
    Blog Entries
    19
    Rep Power
    594
    Ferrite Bead or choke ... to deal with interference and so on. Had the problem with some devices that they are just not happy with a cable without this ... in particular those which are host powered.

  6. Thanks to GrumbleDook from:

    speckytecky (6th January 2012)

  7. #5
    Guest

    Join Date
    Jun 2009
    Posts
    3,754
    Thank Post
    1,458
    Thanked 489 Times in 375 Posts
    Rep Power
    0
    Well, I learnt something today. Incredible as it's 4:30pm on a Friday!

SHARE:
+ Post New Thread

Similar Threads

  1. Replies: 6
    Last Post: 8th March 2011, 08:43 AM
  2. Very cheap and expensive HDMI cables - what's the difference?
    By dgsmith in forum AV and Multimedia Related
    Replies: 27
    Last Post: 11th January 2010, 09:25 PM
  3. What time does the conf start?
    By FN-GM in forum EduGeek May 2009 Conference
    Replies: 2
    Last Post: 26th May 2009, 12:38 AM
  4. What does the Network Manager do?
    By rambo_tw in forum General Chat
    Replies: 18
    Last Post: 12th October 2007, 08:53 PM
  5. What does the panel think of........Smart Learning
    By markesmith in forum Educational Software
    Replies: 3
    Last Post: 22nd September 2006, 12:43 PM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •