See responses embedded below.
Best regards Neil R. Barker CEng MIET HonFSEE MIEEE Manager Quality Engineering e2v technologies (uk) ltd 106 Waterhouse Lane Chelmsford Essex CM1 2QU UK Tel: (+44) 1245 453616 Fax: (+44) 1245 453571 Mob: (+44) 7801 723735 P Please consider the environment before printing this email. From: John Woodgate [mailto:[email protected]] Sent: 14 September 2007 08:55 To: [email protected] Subject: Re: Class II construction question In message <[email protected]>, dated Fri, 14 Sep 2007, "Barker, Neil" <[email protected]> writes: > could a printed wiring track that overheats and fuses under fault >conditions peel off and bridge the gap? Have you ever heard of that happening? I think it's a technological myth. I'm pretty sure I've seen it happen, so I don't believe it's a myth! >You may want to consider fitting a thin insulating layer between the >underside of your printed wiring board and the base plate. Often done. That's why I suggested it. It's probably the simplest solution. > >Good luck with the solution. This is why I have a fundamental dislike >of accessible conductive parts on Class II constructions!! But consider that there are hundreds of millions of such consumer electronic products in use, with no incidents being reported. Agreed, but I still dislike it! -- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ Sent by E2V TECHNOLOGIES PLC or a member of the E2V group of companies. A company registered in England and Wales. Company number: 04439718. Registered address: 106 Waterhouse Lane, Chelmsford, Essex, CM1 2QU, 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
