On 1/14/2008, Brian O'Connell wrote:
While our design technically conforms to the requirements of 60950-1, I do not feel 'right' about a single component bridging either primary/secondary, or primary/floating metal in a Class II unit until I can learn more about Y1 cap reliability and typical failure modes, so I have no information for a case-by-case basis. Hi Brian: A single Y1 cap is generally acceptable under 60950-1, but if you are uneasy with that for your particular application, you can put two in series. That construction would come pretty close to being "bullet-proof." Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 (USA) [email protected] http://www.randolph-telecom.com <http://www.randolph-telecom.com/> - ---------------------------------------------------------------- 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
