In message <[email protected]>, dated Mon, 21 Apr 2008, Brian O'Connell <[email protected]> writes:
>There is no way a non-isolated power source, that is connect to mains, >would meet the requirements of a Class 2 and/or LCC source. Consider a product in a plastic box, with a membrane keyboard and an LCD screen, with no external connections except an opto-isolated data port. The user has no access to the interior, so it can be all 'hot'. Tens, probably hundreds, of millions of non-isolated radios and TV have been manufactured in the past, and the current safety standards do not prohibit the technique entirely, but in my opinion, anyone going down that route is at very high risk. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Murphy's Law has now been officially re-named The Certainty Principle 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
