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'[ERE] Luxeon variable output torch'
2005\02\16@022245 by Russell McMahon

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Super tiny variable output LED torch - 100 mW to 9 watt claimed (!)
variable input to Luxeon module.

       http://www.candlepowerforums.com/ubbthreads/showflat.php?Cat=&Number=633513&page=0&view=collapsed&sb=5&o=365&fpart=1&vc=1

I'm posting this mainly because of the pictures which show lighting
levels at a range of power inputs. See about 80% of the way down the
page. Goes from dim spot to "broad daylight".

There's no real rocket science here, but quite a bit of engineering
learning in optimising boost converter and keeping the module alive at
above rated input.


       RM


2005\02\16@105919 by Harold Hallikainen

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Pretty neat! I used a Luxeon "dental blue" LED on a copper heat sink in
the Denmat Allegro
(http://www.denmat.com/solsheet/allegro/allegro_info.htm) dental curing
light. The current regulated boost converter is putting 1.5A through the
LED. It's bright! (and the product uses two pics in the device and another
in the charger).

Harold


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> -

2005\02\16@115328 by Josh Koffman

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Harold, what did you use to sense the output in the light meter?

Josh
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On Wed, 16 Feb 2005 07:59:16 -0800 (PST), Harold Hallikainen
<spam_OUTharoldTakeThisOuTspamhallikainen.com> wrote:
> Pretty neat! I used a Luxeon "dental blue" LED on a copper heat sink in
> the Denmat Allegro
> (http://www.denmat.com/solsheet/allegro/allegro_info.htm) dental curing
> light. The current regulated boost converter is putting 1.5A through the
> LED. It's bright! (and the product uses two pics in the device and another
> in the charger).

2005\02\16@122709 by Harold Hallikainen

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www.taosinc.com/product_detail.asp?cateid=2&proid=16

Harold


> Harold, what did you use to sense the output in the light meter?
>
> Josh

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