In message <49db4c9a.fef9.00b...@deltarail.com>, dated Tue, 7 Apr 2009, Andrew McCallum <andrew.mccal...@deltarail.com> writes:
>EN 55014-1:2006 applies to many household appliances but seems to only >apply emission limits from 30 - 1000 MHz to toys. Coffee makers, ovens >etc etc have emission limits up to 30MHz/300MHz measured with an >absorber clamp around the mains lead. No actual radiated emission >measurements are made. Can anyone explain the justification for this? In the past, household appliances rarely, if ever, produced radiated emissions above 30 MHz, and radiated emissions can't really be measured below 30 MHz because the background noise level is too high. It is true that the standard is late in being updated to take into account techniques that can produce significant radiated emissions, but these things do take time to develop and agree. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Things can always get better. But that's not the only option. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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 <emc-p...@ieee.org> 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 <emcp...@ptcnh.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
