Lumileds

Gags said:

In one of my earlier posts on homemade bike lights, someone
mentioned something about running a 1W lumiled.

I was wondering if anyone can tell me where these can be bought
and how much they cost??

I am also interested in the 5W lumileds that i have heard you
can get......anyone seen em??

I'm not sure if these are exactly what you're looking for, but
they're worth knowing about anyway:

http://shops.bizarsoftware.com.au/ATAShop/catalogue/category16/category41

John

Gags said:

In one of my earlier posts on homemade bike lights, someone mentioned
something about running a 1W lumiled.

Quoted message said:

I was wondering if anyone can tell me where these can be bought and how much
they cost??

Quoted message said:

I am also interested in the 5W lumileds that i have heard you can
get......anyone seen em??

I wouldn't bother, They are just as efficient as halogens, the 5 watt version
has a shorter life than most halogens, as far as dollars per watt goes they
cost 8 times as much, you need special mounting hardware (with heatsink) for
the 5 watt version, and given the choice, trashing a $15 halogen is preferred
compared to losing $60 for a lumiled.

I've looked at them some time back, and for the purpose of bike lighting, all
things considered, they don't cut it for me.

--
Linux Registered User # 302622 <http://counter.li.org>

John Tserkezis <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Gags said:

In one of my earlier posts on homemade bike lights, someone mentioned
something about running a 1W lumiled.

Quoted message said:

I was wondering if anyone can tell me where these can be bought and how

much

Quoted message said:

Quoted message said:

they cost??

Quoted message said:

I am also interested in the 5W lumileds that i have heard you can
get......anyone seen em??

I wouldn't bother, They are just as efficient as halogens, the 5 watt

version

Quoted message said:

has a shorter life than most halogens, as far as dollars per watt goes

they

Quoted message said:

cost 8 times as much, you need special mounting hardware (with heatsink)

for

Quoted message said:

the 5 watt version, and given the choice, trashing a $15 halogen is

preferred

Quoted message said:

compared to losing $60 for a lumiled.

Given that you need a heatsink, wouldn't this mean they are less efficient,
as some of the energy is transferred into heat?
---
DFM

In article <[email hidden]>,
deepfloydmars@yIaWONThBITEoYA!o.co.uk says...

Quoted message said:

Given that you need a heatsink, wouldn't this mean they are less efficient,
as some of the energy is transferred into heat?

Last time I checked a halogen bulb was stinking hot also....

Deep Freud Moors said:

Given that you need a heatsink, wouldn't this mean they are less efficient,
as some of the energy is transferred into heat?

They are about as efficient as halogens, so both would dissipate about the
same amount of heat. (about)

Halogens NEED the heat to redeposit the filament particals. Semiconductors
don't like heat much, so the heatsink takes care of that.

--
Linux Registered User # 302622 <http://counter.li.org>