EFT suppress on notebook DC power cable?

Aug 19, 2004 1 Replies
R

Hi, All



I noticed that on my notebook DC power cable there is a cylinder between the DC converter and the output plug on my notebook. And on many consumer electronics products such as Digital camera, that cylinder object also exists. I guess that there is a EFT choke coil inside it. Is that right? If so, is there any information on that? For example, Standard, Spec, Product Ads...



I am interested on that because recently I am doing a project for suppress EFT on nano order. Neither diode or TVS could suppress that kind of EFT.


Thanks and Regards



Roger


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P

It's normally a ferrite core through which the cable passes, I don't think there is a full loop of cable through/around the core. Similar things are used on the better quality monitor leads and Epson fit them a lot on their PSU's for scanners etc.

You can buy clip-over cores with plastic covers from the main distributors.

Peter

-- Peter & Rita Forbes snipped-for-privacy@easynet.co.uk Engine pages for preservation info:

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