how to Direct drive 3 Lux III's

Turbo_E

Enlightened
Joined
Jan 25, 2005
Messages
322
OK i have a 4 D cell Mag i want to use and a buncha loose lux 3 emitters. what battery config can i use to Direct drive all 3 in series? (possibly 4 luxes)
(luxes are SX1J binned)

All i have are AA's and D cell NiMh batteries.
 

Timson

Enlightened
Joined
Mar 5, 2004
Messages
526
Location
Leeds - England
Seems like a tall order..........

Assuming you want about 10v for 3 J bins in series - you want 8 NiMh cells - 9 AA cells might be OK at a push with rested cells.

But you'll still have a lot of wasted cell space in a 4D.
Brightness will drop off quickly and overall runtime wont be great.


Best bet....Get a boost circuit and throw in 4 good quality NiMh D cells.


Tim
 

cratz2

Flashlight Enthusiast
Joined
Apr 6, 2003
Messages
3,947
Location
Central IN
I just built a 3D using the perfect tri sink, but I used RW0H Lux Is for better runtime. Without really thinking about it, I wired it up in series as shown on the Minetrois and Quadamire instructions at the Sandwich Shoppe and nothing happened of course. Then I realized it was dividing that 3.6-4.5V among all three stars and nothing was going to happen. So I re-wired the stars in parallel.

With the three RW0Hs and fresh Energizer D cells, I measure 1.12A so each star is seeing about 375ma which is just slightly overdriving them.

Very pleased with the results.

You could either do something similar or just go with a regulation circuit.
 

Turbo_E

Enlightened
Joined
Jan 25, 2005
Messages
322
use a dummy cell, IE: chunk of copper tubing :p

now how can i run 4 or possibly 6 lux 3's? I'm thinking a floodlight....

again same Mag body.
 
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