what is this?
![](http://photos1.blogger.com/blogger/7745/2484/320/bulb%20on%20the%20pwer%20cord.jpg)
![](http://photos1.blogger.com/blogger/7745/2484/320/bulb%20on%20the%20pwer%20cord2.jpg)
Could anyone tell me what is the use of the bulb like structure on most power cords. I have seen them on many data cords too, like ethernet cables.
Please leave a comment or email me at slI1Ilm@gmail.com
Thanks.
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Update: Nov 2007-> This is a ferrite choke or a ferrite bead.
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aa
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