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From: "R. Lewis"
Subject: Re: luxeon star leds
Date: Wed, 27 Nov 2002 18:59:26 -0000
Organization: Nextra UK
References: <3DDD9A57.58900EFB@RobertsResearchInc.com> <email@example.com> <3DDDB646.96D0D9D2@RobertsResearchInc.com> <3DDE7264.CD48F4F8@RobertsResearchInc.com> <firstname.lastname@example.org> <3DDEB081.884EC92A@RobertsResearchInc.com> <3DE03D65.932BF9BF@RobertsResearchInc.com> <3DE15871.EF8FF9EA@RobertsResearchInc.com> <3DE224D3.81EFBA3C@RobertsResearchInc.com>
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"Bob Wilson" wrote in message
> In article , email@example.com
> >"Bob Wilson" wrote in message
> >> ............
> >> Ooops, I missed that. But a luxeon without a heatsink would seem to be
> >> complete waste of an expensive LED. Without a heatsink, it is not
> >> to push it to anywhere near its intended power level, May as well just
> >> ordinary LEDs.
> >> Bob.
> >Not even in an ambient of -20degC?
> >Not even with a duty cycle of 1 in eversuchalot?
> >Which 'ordinary' leds operate satisfactorily @ 1000mA under any of these
> You forgot the other type of duty that everyone subjects these things to,
> namely operating in Liquid Helium, too.
I do not want to run them in liquid helium. Just at -20degC in air (ish).
Duty cycle is On for around 125mS Off for 1100mS.
A luxeon emitter needs around 700mA. Size is important (ish)
What ordinary led can I use (red)
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