In message <ofae34d781.9bc07564-on80257172.004a953d-80257172.004bb...@servomex.com>, dated Thu, 18 May 2006, [email protected] writes >I have a question regarding the likely behaviour of ac to dc switch >mode power supplies during fast transient burst tests to EN 61000-4-4 >and surge tests to EN 61000-4-5. > >For a manufacturer to claim conformity to these standards are any >constraints placed on the behaviour of the dc output voltage during the >tests? I am particularly interested in the likely change in DC voltage >output as the appropriate burst/surges are applied to the ac input.
No explicit requirements. But Criterion B really covers the possibility that the 5 V line goes up to 120 V! The product must work AFTER the test. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk 2006 is YMMVI- Your mileage may vary immensely. 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
