at. I know there is non-continuous > LEDs out there, but I hope they will fade to grey while continuous takes > the market. > > Cheers, > Magnus > >

ey" are trying to do away with edison bulbs. I hope >>>> the LED equivalents are better, because the CF bulbs seem to last >>>> less in most home apps. >> >> Speaking of LED lamps: I want to point out that at least over here >> IKEA has a wonderful little LED lamp for the worktable. >> >> It's a single 3W white led, at the end of a 55cm long (that's 20" for >> the imperialists amongst us) "swan-neck". > > LED lamps... the one thing I keep being annoyed about is the aspect of > having three peaks of relative narrow spectrums rather than the normal > continuous spectrum mainly being that of the temperature signature. > > Anyone out there looking at the frequency spectrum of these low-energy > lamps? > > Colour response from few-spike lamps is not really the same than from > continuous spectrums. > >> I use one for my small CNC-mill: >> >> http://ing.dk/uploads/society/content/232.png >> >> It's called "JAN SJÖ" here, not sure if they use that name in other >> geographies. > > IKEA has a habit of giving all their products Swedish names for their > products... worldwide. It's part of their trademark so to speak. > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

Magnus

s so far). All the fixtures are on their first set of bulbs. Bob On Jan 30, 2010, at 8:26 AM, Magnus Danielson wrote: > d.seiter@comcast.net wrote: >> I took apart the last dead one just for that purpose. I initially eyed the 105deg Al cap, but it was dead, along with one of the xstrs (hole in package). The film caps, diodes and fuse are still good too. As is the tube- don't know what I'll do with that. > > Sounds to me that the electronics died... rather than the bulb. > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

time. That is what EPA has found too! CFL's may take less power for a given illumination, but the owners leave them on far longer than incandescent, and the net result is greater power consumption overall. Add that to the mandatory drop of mercury in each, and I really can't see how they can sell them at all. I got two for "free" from my power company (They hid the charge on my bill, until the courts made them reverse it...) and included with the CFL's was an elaborate procedure for cleaning up a broken CFL. It involved opening all of the windows, and leaving the room for a couple of hours, and then, with a gloved hand putting the pieces on newspaper, and folding the newspaper up and putting it in a 1 gallon zip lock baggie. To clean up the broken bits, you are supposed to vacuum the area with a fresh vacuum cleaner bag, and then put the vacuum cleaner bag in a ziplock baggie, and take the remains off to the hazardous waste disposal facility. -Chuck Harris Magnus Danielson wrote: > d.seiter@comcast.net wrote: >> I took apart the last dead one just for that purpose. I initially eyed >> the 105deg Al cap, but it was dead, along with one of the xstrs (hole >> in package). The film caps, diodes and fuse are still good too. As is >> the tube- don't know what I'll do with that. > > Sounds to me that the electronics died... rather than the bulb. > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

light. > Fluorescent "sky blue white" is what I don't want. > > Cheers, > Magnus > >

It was rated for 10000 hours, and probably reached that before I junked it. On the other hand, I've had some cheap Ikea lamps fail in ceiling lights in little more than a year. The electronics self-destructed. Took a close look at the package for a new one, and they are rated for only 2000 hours - which is easy to use up in a year in a room where the lights are on 6 hours every evening. Now, using CFLs of any type reduces electricity use compared to incandescent, and that's worthwhile in many applications. But CFLs also add a bunch of electronics parts to the waste stream when they are thrown out - they're much worse than incandescents in that respect. So when I use fluorescents, I prefer replaceable-tube units (where the electronics in the ballast will last for decades, not be replaced every couple of years). In places where I need a screw-in self-ballast type, I look for the more expensive 10,000 hour types instead of the cheap 2000-hour ones. And, as someone else pointed out, it doesn't make much sense to use CFLs in applications where they are turned on and off a lot, since their life will be much shorter than rated. (But LEDs should be fine for this, once the price comes down a bunch). Dave On 30/01/2010 05:31, Didier Juges wrote: > Also they are very sensitive to heat, so do not use them in an enclosed > fixture. > > I have been burned (figuratively) with these two gotchas, there may be more. > The one that lasts the longest in my house is the outside light at my back > door. It is turned on once a day around 6-7 PM and off in the morning, so > about 12 hours a day every day, and it lasts for years at that rate. Those > in the bathroom that get to be turned on and off several times a day for a > relatively short time don't do nearly as well. > > Didier >