:-) Not suggesting that. Just pick a couple, or look at a span in real time while varying the dimmer, then pick worst case from that. No more different that playing with cables to maximize the emission. Bob R.
--- On Tue, 5/12/09, John Woodgate <[email protected]> wrote: In message <[email protected] <http://us.mc11.mail.yahoo.com/mc/compo [email protected]> >, dated Tue, 12 May 2009, Bob Richards <[email protected] <http:/ us.mc11.mail.yahoo.com/mc/[email protected]> > writes: > However, you are correct, it should be worst somewhere in mid-range. Dwelling at one frequency and varying the output level allow the worst setting to be identified. Please don't give the EMC crusaders ideas like that! The harmonics of mains frequency from a phase-controlled dimmer extend beyond 10 MHz, typically. So imagine dwelling on each one and adjusting for maximum emission level! -- 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 <[email protected] <http://us.mc11.mail yahoo.com/mc/[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] <http //us.mc11.mail.yahoo.com/mc/[email protected]> > Mike Cantwell <[email protected] <htt ://us.mc11.mail.yahoo.com/mc/[email protected]> > For policy questions, send mail to: Jim Bacher: <[email protected] <http: /us.mc11.mail.yahoo.com/mc/[email protected]> > David Heald: <[email protected] <http:/ us.mc11.mail.yahoo.com/mc/[email protected]> > - 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]>
