I read in !emc-pstc that John Barnes <[email protected]> wrote (in <[email protected]>) about 'EN 55022:1998 +Amendment A1:2000' on Tue, 21 Jan 2003: >But if we are testing a product that uses a "wall wart" direct plug-in >power supply, do we need to bother with the ferrite clamps/tubes? > >My interpretation is that we don't, because the AC/DC cord from the wall >wart is not a "mains cable", nor a "connection to auxiliary equipment >located outside the test area". > >How do the rest of you interpret this requirement?
Put the clamp on the power cable that feeds whatever the wall-wart is plugged into. If you do not, the product may fail the test. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
