In message <[email protected]>, dated Tue, 24 Apr 2007, Brian O'Connell <[email protected]> writes:
>As usual the replies have been very helpful. Now the boss says "no >stinkin PFC" for this power supply. > >So, can the 75W rating be applied to an averaged input power, or does >it apply to the peak (surge) power ? > >If I am allowed to use the 'average' input rating, what time interval >is required to indicate this average power rating I suppose you don't actually have a copy of the standard. If so, I suggest you buy one, rather than expect other people to save you £X by each spending time (= money) answering your questions piecemeal. If you HAVE a copy, what about the first dashed item in clause 7 isn't clear? Why don't you just measure the thing? If the 200 W is a linear load, it will almost certainly pass anyway. Being a printer, Class A limits apply. It would probably be difficult to design a 200 W product that didn't meet those limits, let alone a 75 W product. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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 ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
