I do not think so.
Unless you are ready for huge volumes of ferrite. Normal snap-on ferrites (large ones) are effective only >from 50 MHz off, and the effect may be improved at the cost of it’s effectiveness in the 100’s of MHz range by winding the cable 2 -3 times through the ferrite. So I expect that you will need at least 100 time s the volume of an ordinary ferrite clamp to get some effect. And it will be partially inductive too…. A solution may be using a high mu ring ferrite of suitable dimensions as used in transformers and creating a secondary winding (current transformer) with a suitable secondary circuit to absorb the frequencies you search to suppress. ( I was thinking of a parallel resonance LCR circuit) Outside resonance the LC has a low impedance, so has the primary When in resonance the R transforms to the primary with the ratio of the windings squared. Anyway, the effect is limited to the impedance the ferrite has without secondary, and the transformed R may not suit your requirements. Gert Gremmen Van: [email protected] [mailto:[email protected]] Namens Ken Javor Verzonden: Tuesday, August 12, 2008 6:59 AM Aan: Untitled Onderwerp: Ferrite snap-on rfi suppression for cable in AM BCB Does anyone out there know of a product or material that could be clamped or formed around an installed cable and be absorptive, not inductive, in the low end of the AM BCB (around 500 - 800 kHz)? Thank you, Ken Javor Phone: (256) 650-5261 - ---------------------------------------------------------------- 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
