I read in !emc-pstc that drcuthbert <[email protected]> wrote (in <[email protected]>) about 'EN55022:1998 + A1:2000' on Fri, 31 Jan 2003: >How can a ferrite clamp be called a CMAD Common Mode Absorption Device? It >reduces EM radiation >by reducing the current through the "antenna", not by absorbing RF. It >could, however, be called a CMAD Common Mode Attenuation Device.
It is *meant* to absorb the energy in a lossy filter. However, it has been incredibly badly specified by CISPR/F, AIUI. -- 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] 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
