Rob, RF Filters used on power to a chamber are usually very broadband kick butt filters. These filters can have quite a bit of leakage current and controlling the path of this current is important.
RF Filters are passive, to just applying power to them should not generate any interference other than line frequency return currents. BTW, what kind of lights do you use in your chamber? What type of monitors are being interfered with? Are they old CRT types where they are seeing a magnetic field causing the display to move or are they more modern LCD monitors? What does the “interference” look like or has revealed itself? The Other Brian From: Robert Dunkerley [mailto:[email protected]] Sent: Monday, September 28, 2015 8:46 AM To: [email protected] Subject: [PSES] EMC Chamber Filter Issue Hi, Has anyone ever had problems with EMI filters supplying EMC chambers before? When mains is applied to the filter for the chamber lights, there is interference seen on the computer monitors outside the chamber. This happens even if the lights are turned off in the chamber, but power supplied to the filter. Looks like the noise is going down the mains cable into the computers/monitors. The filter may have degraded, but I though they tend to just go completely? Thanks, Rob. ________________________________ This email has been scanned for email related threats and delivered safely by Mimecast. For more information please visit http://www.mimecast.com ________________________________ - ---------------------------------------------------------------- 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]<mailto:[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]<mailto:[email protected]>> Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher <[email protected]<mailto:[email protected]>> David Heald <[email protected]<mailto:[email protected]>> ________________________________ LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - ---------------------------------------------------------------- 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]>
