Rich, RN> I'm surprised that, today, a SMPS would used screen/ shield construction.
[R_Hughes >] Not all power supplies are switch mode, even today. I bet that the HiFi addicts who say that they can hear the difference between a valve amp and a transistor amp would absolutely hate the idea of anything other than a pig-iron transformer (not intended to be a technical description, John). RN> I presume you are referring to the circuit prospective current. (I am not familiar with the proposal to WG8.) [R_Hughes >] I know it as prospective short-circuit current, but maybe I go boldly whereas you boldly go? RN> However, I believe that the circuit prospective current is of little or no consequence when testing a robust earthing circuit complying with the constructional requirements. (Of course we should test this hypothesis.) [R_Hughes >] Exactly the point I made in WG8. Best regards, Richard 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
