We have discovered that some commercially available electronic loads have conducted emissions of their own and these currents find there way into the device-under-test.
Consider using either resistive load or an analogue controlled transistor load bank. (no switching circuits or oscillators inside). We built our own for all DVT testing including EMC. ====================================== Ralph McDiarmid, ASc Compliance Engineering Group Xantrex Technology Inc. From: [email protected] [mailto:[email protected]] On Behalf Of David Gelfand Sent: Thursday, May 18, 2006 8:09 AM To: [email protected] Subject: Conducted emission measurements We measured conducted emissions of a switched mode ac-dc power supply and found that emissions are much higher when using an electronic load compared to a resistive load. Can somebody explain why this is? Thanks, David. David Gelfand, P.E. Product Integrity Engineer Mitec Telecom Inc 9000 Trans-Canada Highway Montreal QC H9R 5Z8 Canada 514 694 9000 x2262 - 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 - 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
