Dave Cuthbert write >> the point at which ferrites are placed will not always have a common mode impedance of 50 ohms. Here's An example: a large DUT has a 1 meter long cable that connects <<
Not always; make that "rarely." Comments about the 150 ohm impedance are on target. That might be difficult to hold to. I can see the entry needing to be a "bump" of not more than 15 ohms at the high frequency end, and increasing per unit length attenuation with distance from the entry. Cortland 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
