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unixronin: Galen the technomage, from Babylon 5: Crusade (Default)
Unixronin

December 2012

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Sunday, June 11th, 2006 03:29 pm

Since we had a (standard incandescent) torchiere light short out internally and burn up its socket rather spectacularly last night, I went looking to see if there was an easy way to replace its guts with an LED solution.  And I found something very interesting.

Briefly, if you google for LED home lighting, you'll find that there's all kinds of LED home lighting devices on the market ... in Australia.  Here in the US, there ain't jack, and what little there is, is horrendously overpriced -- $130 for a standard-form-factor medium-base bulb that, as far as I can tell given the inconsistent and confusing way they list the specifications, appears to be the rough equivalent of about a 30W incandescent bulb.  (At that, it consumes 13W -- so if their published specs accurately represent reality, they've managed to make an LED light that's only about half as efficient as a compact fluorescent that costs twenty times less.  Who in their right mind is going to buy that?  They should surely be getting a HELL of a lot more light output from 13W worth of LEDs.)

For now, I guess I'll be just putting a new incandescent fitting into it.  Hopefully, I'll be able to find a decent-quality one.  (I shudder every time I look at replacement light sockets at the hardware store and see cardboard insulation.  Whiskey tango foxtrot, over?!?)

Monday, June 12th, 2006 02:19 am (UTC)
I know the "white" LEDs use a UV-excited phosphor mix, as do CFs. The spectrum of incandescents is pretty terrible, most of their radiated energy is IR, but old-style fluorescents used to be even worse, with a discontinuous spectrum with lines in some very odd places. (They've improved a lot. When I had to use conventional tubes, I'd generally pay the extra and buy full-spectrum tubes.)

The really nice thing about LED lighting is that with some of the tricolor panel solutions people are experimenting with, you can selectively adjust the RGB output to tune the color balance to your preferences. I'm quite happy with something as close to daylight as I can get, most of the time, and when I don't want daylight, I usually want either just generic dim light or real firelight.

There's three main reasons I'd like to switch over to LED lighting as soon as possible: long life, low power consumption, and minimal waste heat.
Monday, June 12th, 2006 01:27 pm (UTC)
I haven't found any commercial outlet for tricolor LED panels. As far as I know, you build your own, or do without. I built my own.

I understand the three reasons. They closely mirror my own reasons for wanting to switch to LED's. I am trying to set my house up for wind power. I have a homemade windmill up right now. Not much in the way of output, but anything that offsets the cost of my computer's runtime is worthwhile.