Hi All, I have been testing more power supplies and have concluded that most power supplies are capable of having a single 1400 Volt EFT-like pulse breaking over the isolation barrier in the supply with multiple breakdowns per EFT pulse. These pulses are very common in the electrical environment, usually coming as a burst up with to a 10 MHz repetition rate within the burst.
These breakdowns are likely the cause of many pulsed immunity test failures. I am building V2.0 of the pulser and will start looking for isolation barrier degradation over time and breakdowns as above. I am planning 500,000+ EFT line pulses at one per second over several days as an accelerated life test. Right now I am planning to present and publish my results at the EOS/ESD Symposium later this year but will do a "preview" of my preliminary results mid-next week. Contact me privately if you are interested. Doug Smith Sent from my iPhone IPhone: 408-858-4528 Office: 702-570-6108 Email: d...@dsmith.org Website: http://dsmith.org - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to EMC-PSTC@LISTSERV.IEEE.ORG All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://pses.ieee.org/wp-content/uploads/2024/12/EM-PSTC-List-Rules.pdf For help, send mail to the list administrators: Mike Sherman at: msherma...@comcast.net Rick Linford at: linf...@ieee.org For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
