Moon Mag :D

[Neg2LED]

Hello All,

just an idea for a 2d/2c mag mod (might work)

Take one 2 cell mag,
one o-sink for said mag
a 1w or a 3w luxeon

and pretty well follow the instructions for a space needle minus the 3x123 batty holder and spring cut!

would it work????

neg

 

[LEDmodMan]

Neg,
For alkalines, no it probably wouldn't work. 3v isn't quite enough to really do much for the luxeon in direct drive. You would need some kind of boost circuit, like a BadBoy, MadMax, Fatman, or such. Step it up one cell in DD, and they work great though! A 3D LuxIII in direct drive is crazy bright, and lasts almost forever.

 

[Ralf]

neg will built a *moon* mag and
with 3V there is a light output from a Luxeon LED :-)

But its a big light then for such a low output :-)

Cheers
Ralf

 

[LEDmodMan]

I came back to edit my post, but I see Ralf has beat me to the info.

An "H" Vf bin starts at 3.03v. So I suppose a 3v DD light would work (the lower the Vf bin, the better), but you wouldn't get much light out of it without a very low Vf bin. H is the lowest I recall ever seeing. The plus would be that it would be VERY efficient.

I second Ralf's statement that it would be an aweful big light for such a low output.

 

[WildRice]

[ QUOTE ]
LEDmodMan said:
A 3D LuxIII in direct drive is crazy bright, and lasts almost forever.

[/ QUOTE ]

just a quick question, I currentally run a few LUX III's DD off a Li-ION at 1.1A. What is the average current DD off 3x'D' cells, and is it safe. I hear it done here alot, but never tried it.

Jeff

 

[Ralf]

WildRice,

that depends on what binning your LUXIII is.
I run a TXOK with 3C cells in DD and the current
is around 1.2 A. Thats fairly "safe" with a proper
heat sink.

Cheers
Ralf

 

[StoneDog]

Neg, Add a badboy or madmax converter and you'll get quite a bit more output. Or, take a 2D mag, convert it to 3C w/ 1" PVC pipe and run a Lux3 (K or L Vf) direct-drive.

 

[thatguy]

Regarding DD safe levels--
If I put a LuxIII ***K bin DD off 3 D-cells, how long will the LED see more than an amp of current? I just wonder when the batteries will start to die to the point the LEDs are not being overdriven.

 

[Neg2LED]

StoneDog: i was just thinking that /ubbthreads/images/graemlins/smile.gif

i reckon thats the way i'll go...........

neg