The facility described below used that impregnated white cardboard from Panashield, over black ferrite tile. From just a lighting perspective, any blue cones covered by the Styrofoam or similar white end caps would work just as well. Ken Javor Phone: (256) 650-5261
> From: "Schaefer, David" <[email protected]> > Date: Mon, 4 Feb 2013 13:47:38 -0500 > To: "[email protected]" <[email protected]> > Conversation: LED Chamber Lighting > Subject: RE: LED Chamber Lighting > > Speaking of which, We have some chambers that have black ferrite and poor > lighting. We're looking into LED lighting, but also are interested in > covering the ferrite with a white film. I've seen this in other labs, but > haven't found a vendor yet. Can anyone recommend one? > > David Schaefer > > > > -----Original Message----- > From: Ken Javor [mailto:[email protected]] > Sent: Monday, February 04, 2013 12:39 PM > To: [email protected] > Subject: Re: [PSES] LED Chamber Lighting > > I saw an amazing display of LED shield room lightning. The LEDs (and more > importantly) all the wiring, are totally outside the chamber. A light pipe > penetrates the chamber ceiling at regular intervals through a stuffing tube > (waveguide beyond cut off). > > It should be noted that this chamber has white absorber; this would not have > worked with black ferrite tile or blue cones. At least it would have taken > many more luminaries. > > Ken Javor > Phone: (256) 650-5261 > > >> From: "Kunde, Brian" <[email protected]> >> Date: Mon, 4 Feb 2013 18:22:05 +0000 >> To: "[email protected]" <[email protected]> >> Conversation: LED Chamber Lighting >> Subject: LED Chamber Lighting >> >> Has anyone tried out LED Lighting in EMC test chambers? If so, can you >> share your experience, opinions, likes and dislikes, and cost? >> >> I have recently seen several ads for LED Light Fixtures and >> replacement kits where a 100watt LED light can replace a 400 watt Metal >> Halide bulb or fixture. >> But I have some concerns: >> >> 1. Are LED as bright? >> 2. The ETS-Lindgren datasheet claims "No RF Noise into the test chamber". >> Seems too good to be true. Are these lights special for ETS or are >> there over the counter LED fixtures that will work just as well? >> 3. Cost? Are there generic lights that would work as well but be >> cheaper? If I hold off a year or two do you think the price will drop >> significantly? >> 4. What other pros and cons are there? >> >> >> We have eight metal halide light fixtures in our chamber. Currently we >> have to replace the bulbs every two years because of rf emissions from >> bulb arcing. We replace the ballasts at 10 years because of loud >> buzzing. Though the metal halide bulbs are relatively inexpensive, we >> have to rent a lift for several days to work on the lights. Plus the >> cost of having the lights worked on every other year and our chamber >> being down for a few days. LED lights have the potential of being >> maintenance free for 15 years or more. In the long run it should save >> us money. This might be something to put on my capital equipment list for >> next year. >> >> I'm curious to hear any input you might have on this topic. >> >> Regards, >> 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]> > > - > ---------------------------------------------------------------- > 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]> - ---------------------------------------------------------------- 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]>
