To all who responded, I was really hoping for a bulkhead mount type pi or T-type filter but using a cm choke, and feedthrough caps, or similar, to get really high performance at high frequencies, coupled with minimal size.
Never found anything like that, and as I said, this is a commercial application and not terribly large production, so a custom filter is not realistic. Thanks to all who responded. Ken Javor Phone: (256) 650-5261 On Wed, Jun 5, 2019 at 11:21 PM Ken Javor <[email protected]> wrote: > Working a little outside my experience area. > > Trying to help someone meet FCC Class A RE limit. Device is an off-line > battery charger, failing RE 30 200 MHz. Conducted emissions on output leads > (24 / 36 Vdc @ up to 25 A) are too high to meet RE limit. Trying to snub > sources is not my thing and they are not interested in that at his point. I > am trying to contain the noise. Plan is to provide a metal bulkhead with a > bulkhead-mount common mode only filter rated for 50 Vdc and over 25 A, but > filtering only at and above 30 MHz. > > Trouble is, I can¹t find such a filter off-the-shelf with commercial rating > and commercial price. > > Can anyone suggest a vendor of such? > > Thank you, > > Ken Javor > Phone: (256) 650-5261 > > - > ---------------------------------------------------------------- > > 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 > <[email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) <http://www.ieee-pses.org/list.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]> - ---------------------------------------------------------------- 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 <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) 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]>
