Re: LED lighting

[Markus Baertschi <markus@xxxxxxxxxx>]

ken wrote:
> your information is a bit stale.
The article I referred to might be slightly conservative. But
unfortunately what you can buy at your normal shop is usually at least a
year behind the bleeding edge technology. You can get data sheets and,
if you are lucky a sample of your nice LEDs, But you will not find them
at your local home depot for years !

> LEDs are constantly improving in efficiency (something incandescent
> bulbs arent really doing now days)
>
> also, incandescents get more like 15 lumens/watt
> (Halogens are around 20 lumens/w.)
Yup, I've got more halogenes than normal incandescents because we prefer
spots over standard lights, so for me 20lm/w applies.

> also, at these low numbers, even a couple lumens of difference
> is a significant *percentage* difference.
Yes, this is true. Unfortunately it is more true for low-power lamps
where power savings are less important due to the lower wattage.

> an informative article explaining why LEDs just work so much better
>  in practice,
>     http://members.misty.com/don/lede.html
>
> which also explains why LEDs really win with traffic lights and why
> the batteries seem to last longer.

Yes, very nicely explained. Interesting site in any case :-).

Markus