Brian, Word of caution and you probably understand this - watch the routing of the wires for the power supply. If the DC output are routed next the AC input inside the box you will have completely bypassed the power supplies filtering and inject output noise into the input lines. Happens all the time unfortunately.
Gary -----Original Message----- From: Kunde, Brian [mailto:[email protected]] Sent: Wednesday, October 31, 2012 1:53 PM To: [email protected] Subject: Re: [PSES] Possible Counterfeit EMC Components? We didn't open it yet for we have no spares right now. But we did just finish performing the line conducted emissions test, which it failed. Tomorrow we will retest with the line filter removed to see if it is doing anything. Once we get a replacement component we will open this filter up to see what's inside. The Other Brian -----Original Message----- From: ce-test, qualified testing bv - Gert Gremmen [mailto:[email protected]] Sent: Wednesday, October 31, 2012 3:24 PM To: Kunde, Brian; [email protected] Subject: RE: Possible Counterfeit EMC Components? Did you open it ? What was inside ? Tuna fish ? Gert Gremmen Ce-test, qualified testing -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Kunde, Brian Verzonden: dinsdag 30 oktober 2012 21:42 Aan: [email protected] Onderwerp: Possible Counterfeit EMC Components? I recently preformed a safety evaluation of a product made in the far east which contained a suspicious looking rf line filter. Instead of the nice silkscreened markings showing the company name, numbers and a schematic of the filter components, it just had a basic printed label. When I removed the filter and turned it over I found that the case was not soldered but just spot welded in four spots. Are line filter companies cutting corners to save money or might this filter be a counterfeit? The filter manufacturer's website doesn't show this model filter (anymore?) but you can buy them from several online electronic component companies. Has anyone run across counterfeit components and is this something we need to keep an eye out for? My biggest concern is with safety certified components which smaller companies like ours have to purchase through distributors who get them from who knows where. Is this a real concern or am I just being paranoid? Thanks, The Other Brian ________________________________ 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://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]> ________________________________ 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://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.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://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]>
