One of my colleges here tested the X-prize Phillips bulb for radiated emissions in a simple desk lamp in our chamber. A single bulb _barely_ passed Class B at three meters.
YMMV! Brent DeWitt Bose Corporation Framingham, MA -----Original Message----- >From: "Kunde, Brian" <[email protected]> >Sent: Feb 4, 2013 1:22 PM >To: [email protected] >Subject: [PSES] 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]>
