power cord, What's this thing? (see pic)

Discussion in 'General Electronics Chat' started by tryin2fixit, Oct 6, 2012.

  1. tryin2fixit

    Thread Starter New Member

    Sep 30, 2012
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    The thing circled...what's it for?

    [​IMG]

    I took one off a power cord the other day cause it was a bad cord.
    When i wiggled it the power kept going out.
    Wondering if it's something important.
     
  2. Audioguru

    New Member

    Dec 20, 2007
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    It is a filter to keep high frequencies from causing interference to nearby electronic things. Since it is near the connector then I think it filters the thing that it is powering because if it filters itself then the filter would be closer to itself.
     
    tryin2fixit likes this.
  3. mlog

    Member

    Feb 11, 2012
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    Cut it open and tell us what's in it.
     
  4. tryin2fixit

    Thread Starter New Member

    Sep 30, 2012
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    So it's not too important?

    The one i took off...i threw it out yesterday so it's gone now or i'd take a pic.

    Inside it was like crunchy dark grey stuff it seemed like.. coarse rock plasic mixed with metal, and a little sparkly...it cracked into pieces when i was taking it apart.
     
    Last edited: Oct 6, 2012
  5. electronewb

    Member

    Apr 24, 2012
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  6. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    LOL! Good one, Scrooge!:D
     
  7. tryin2fixit

    Thread Starter New Member

    Sep 30, 2012
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    Thanks! So i've decided not gonna worry about it not being there.
     
  8. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    You can't fool us. We all know you are tryin2fixit's evil twin, tryin2breakit.:D
     
    DerStrom8 likes this.
  9. DerStrom8

    Well-Known Member

    Feb 20, 2011
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    Just keep in mind that without it, your device is more susceptible to high frequency spikes and is more likely to be seriously damaged. A common source for such spikes is a power surge, especially ones caused by lightning storms.

    It's there for your protection. If you care more about not having a little black bump in the cord than you do about the safety of the device, then you should be fine without it. Otherwise, they make clip-on ones that you may be able to buy for cheap.
     
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