In message <[email protected]>, dated Mon, 4 Oct 2010, "Pawson, James" <[email protected]> writes:
>If the magnetics you use for your Ethernet have a centretap on the >input side of the transformer (sometimes connected to a voltage rail, >sometimes to ground) then you should try filtering the supply to this >with an RC or bead-cap filter. You mean the sending end transformer, I suppose. Exactly how do you connect the filter? After all, if the CT is grounded, and you introduce a resistor or bead into the grounding wire, where do you connect the 'cold' end of the capacitor? It surely can't go back to ground! -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK If at first you don't succeed, delegate. But I support unbloated email http://www.asciiribbon.org/ - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
