Full list reply; no negative criticism here. The thing you need to find out is if the insertion loss of the filter itself is diminishing, or if the filter is bypassed by a radiated path as installed in the equipment enclosure, in which case you have to do a better job of protecting the input and output ends of the filter from each other. These filters are designed to simply plug into a board just like the converter itself, but you may need to play with PCB layout not to compromise the filter insertion loss.
On the other hand, if there is radiated bypass occurring within the filter assembly itself, and the insertion loss of the filter itself is rolling off, then you will need auxiliary filters that cut in above 30 MHz. In my world of military, aerospace and space, that wouldn't be a big issue. But I don't tend to see those nice little filter doghouses or filter pin connectors in too much of the ITE I purchase... Ken Javor Phone: (256) 650-5261 > From: Derek Walton <[email protected]> > Date: Tue, 10 Mar 2009 16:57:07 -0500 > To: IEEE EMC Discussion Group <[email protected]> > Subject: Filter mofdule > > Good day folks, > > I'm using a Vicor filter module designed to make it's range of SMPS > power supplies 461 compliant. > > The module appears to do a great job on conducted noise, but diminishes > in effectiveness as we go higher in frequency: thus radiated noise is > not as well suppressed.. > > Can anyone share their experiences of these modules and how they perform > over 30 MHz. Off list replies may be better. > > Thanks in anticipation, > > Derek Walton > > - > ---------------------------------------------------------------- > 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.ieeecommunities.org/emc-pstc > Graphics (in well-used formats), large files, etc. can be posted to that URL. > > Website: http://www.ieee-pses.org/ > 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]> - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]>
