I haven't. The light from these...
Indeed, the main future of LED lighting will be in types of lighting which are significantly different from today's lighting designs. However, most people are still at the point of trying to retrofit new lighting sources into today's lighting designs, and that's where LED's tend to fall over.
Ah - I see what you mean.
I'm hoping LED technology will compensate over time by becoming more efficient. Long shot I know, but not improbable.
I hate the idea of non replacable lighting elements - LEDs have finite life and the idea of pulling out and rewiring a fitting because the bulb's gone is crazy.
Are there any bigger lamp formats on the market that LEDs are making a foray into? It seemed to me that GU10's seemed to be one of the main targets.
The other good thing, is although a little less optimate, the GU10's are inherently mains so are usually dimmable (this does vary I know) and don't require powerpacks of varying characteristics all over the place.
Well, sort of. Actually it's because of how much less than 100% efficient they are at converting electrical power into light, and the powers they run at, that the amount of heat they generate is a problem. For lower- output LEDs their inefficiency isn't a problem because the amount of power consumed is low and the proportion turned into heat doesn't raise their temperatures too much. As the power increases so does the heat generated and getting it away is a problem.
I'm very happy with LED lights, apart from the price, but similar to (jamjar) CFLs when first around.
However SWMBO doesn't like the colour. I do, much better than the pink CFLs. They also come up to full brightness instantaniously[1].
[1] As compared to CFLs. One seems to take a fraction of a second to light, and the same to go off, but not like the gloom of CFLs in the first minute in cold weather.
Have you mixed them with halogens? How does the light colour compare?
I tried some dimmable ones the other day. Very bright, not very dimmable (though they did dim no problem), very unpleasantly grey...
Kostas
I haven't tried the dimmable ones a they seem significantly more expensive.
The light from them is not quite the same colour as from halogens, but yes I've used them side by side, and the difference is only noticeable if you look for it....
I just wish there were a larger difference. I am much happier with colou= r =
temperatures from around 3500 to 5000.
We have some so-called photo-CFLs with trumpet shaped spirals - 32 W IIR= C. =
And they make a much more comfortable environment than pretty much every= =
other sort of lamp we have experienced.
I also saw that the Philips ones that are dimmable are 3W, claim 35W equivalence like your 4W ones, and, notable, only have a 25deg angle, as opposed to 36deg on yours. Thanks, but thanks.
Thanks for letting me know. They sould tempting for the corridor (not dimmed) when the 20W halogens die.
There are white or cool white for you to try.
Kostas
I didn't manage to find any on Philips' web site. All were, IIRC, 2700. Did I restrict myself to "myvision" and miss some other branding?
Each set of 30 LEDs came with its own cicuit complete with limiting resistors. But not good enough to handle an old dud car battery being trickle charged.
Maybe not; I was not talking about Philips, I was talking about the numerous offerings available in general.
Kostas
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