In message <[email protected]>, dated Fri, 24 Feb 2006, Cortland Richmond <[email protected]> writes
>Are non-compliant switching wall-wart power supplies next? (Switchers >jam BPL!) BPL (Broadband over Power Line) didn't exist when the conducted emissions limits were set. So even compliant SMPS may cause interference. There is a proposal to study this matter before the British Standards EMC committees now. This is particularly relevant in view of the European, US and Australian authorities moves to effectively ban linear 'wall warts' (with a mains transformer) in the coming year or two by setting very tight limits on efficiency, particularly in low load conditions. At least, they haven't put limits on no-load efficiency! (;-) -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk 2006 is YMMVI- Your mileage may vary immoderately. John Woodgate - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
