I am a cyclist and it's a well-known fact that certain LED headlights interfere with wireless cycling computers. Not a fun thing to find out when trying to follow a route sheet in the dark.
Patty Knudsen Teradata Corporation PH: 858-485-3748 [email protected] ________________________________ From: Dave Heald [mailto:[email protected]] Sent: Wednesday, March 23, 2011 8:13 PM To: [email protected] Subject: Re: [PSES] Lamp dimmer interference The remark about LED bulbs not being digital is interesting - open one up (I have as job interview prep) and it's a switcher & one or more LEDs with a BIG heatsink. Once the manufacturers get up to date efficiency standards, I can only imagine this getting worse - kind of like the redesigned power supply changes when California energy efficiency standards came into effect - the filtering was too much of an energy waste. On the other hand, I guess if there are no emissions requirements now, then maybe there aren't any filters to skimp on later. One thing of note - the LED bulbs are just now becoming dimmer compatible. The older ones come with warnings to not connect them to dimmers. I have to say I'm a fan of them though - my home office is very well lit on only 18 Watts of power. It makes a BIG difference in room temperature in the summer. -Dave Heald On Tue, Mar 22, 2011 at 9:47 AM, Doug Kramer <[email protected]> wrote: And to really make life “fun”, try using that dimmer with several of the new LED light bulbs. I’ll wager you could make several rooms of your house into low level reverb chambers. Because we could, I measured several LED light bulbs to the FCC ClassB radiated limits, they were not in compliance. I did present the information to the FCC, who informed me that they did not consider the product to be a digital device. Good thread, Doug From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, March 21, 2011 3:02 PM To: John Woodgate Cc: [email protected] Subject: Re: [PSES] Lamp dimmer interference That might be a good thing. I can check up on it while away. It's just one small example of an inappropriate use of technology, just because 'we can'. I can see the marketing side of course, if competitor A uses it, everyone jumps onboard or they're out of the race. ______________________________________ ______________________________________________ Ralph McDiarmid | Schneider Electric | Renewable Energies Business | CANADA | Regulatory Engineer From: John Woodgate <[email protected]> To: [email protected] List-Post: [email protected] Date: 03/21/2011 12:48 PM Subject: Re: [PSES] Lamp dimmer interference ________________________________ In message <OF55B39737.301ECAC3-ON8825785A.006A8C61-8825785A.006ABD53@US.Schneider-E lectric.com <http://lectric.com/> >, dated Mon, 21 Mar 2011, [email protected] writes: >I sometimes wonder when my digitally controlled oven will turn itself >one day when we're out. I also often wonder whether a range really >needs digital control. Your next new one will have Internet access, and its own page on Facebook. (;-) -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk <http://www.jmwa.demon.co.uk/> and www.isce.org.uk <http://www.isce.org.uk/> John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK Plural: data, criteria, phenomena. Singular: datum (different meaning: use 'data element' for a single item), criterion, phenomenon. 'Effect' is a noun, 'affect' is a verb (except in psychiatry). - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ <http://product-compliance.oc.ieee.org/> Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ <http://www.ieee-pses.org/> Instructions: http://listserv.ieee.org/request/user-guide.html <http://listserv.ieee.org/request/user-guide.html> List rules: http://www.ieee-pses.org/listrules.html <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 email has been scanned by the MessageLabs Email Security System. ______________________________________________________________________ - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ 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://product-compliance.oc.ieee.org/ 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://product-compliance.oc.ieee.org/ 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://product-compliance.oc.ieee.org/ 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]>
