Sounds like a pretty sweet idea. I guess I would go 3S4P direct drive. Not sure what shipping would cost for a BLF 17mm DD driver from RMM. Worth checking into since he can get you the modes and UI you want.
I contacted him, but he wrote me, that he only have drivers up to 5,5v
I don’t like those DD drivers very much. I use KingKongs, so there is a bit of power behind and I don’t want the modules to be damaged because of too much current.
You mean this one, correct?
-> http://www.mtnelectronics.com/opencart/index.php?route=product/product&path=67&product_id=228
When I run all boards at the max there will be 115W burning in front… maybe there is no current limitation needed.
If you say, that this would be the best solution, I will go for it!
@Xandre:
You mean this one: http://www.lck-led.com/19mm-3000ma-driver-modes-p-501.html
correct?
The problem is, that 3 fully charged LiIons give out a bit too much for this driver. And I need a bit more that 3Amps - if I will use 3s3p I need at least 9Amps.
But thanks anyway!
Those emitters have a pretty high Vf. As long as they are on copper, you'll have no problems. Especially with King Kongs as they have a good bit of voltage sag. You will get a good bit less current than you expect.
I was thinking of a Quad tripleXP-G 2D mag build, but I thought the voltage would be too low since there would be 12 total emitters wired 2S6P. Good to hear the Zener Blf DD can handle 9P nichia, will it be the same for XP-G?
9 modules on Copper will cost me ~150$ - that is too much for a light in this size (probably will never use it intense)
So… No direct drive?
Or maybe a resistor between? There is enough place for it.
And yes, that is a 12 LED light, but I made a quick drafting on my PC - 9 modules fit in, that’s all. But hey… 3,5V*4,5A*9 = 141,75W… I think, that is enough potential power
Maybe I'm thinking of different modules. The ones I think you are talking about are like 20mm with 3 of 219's. Do the emitter on the modules line up with the reflector holes? I see. You intend to use the whole modules, optics and all
With King Kongs, I don't see you getting much over 1.4 amps per emitter on high. That is also RMM's experience reported here. My build in that same thread linked had 4P 18650's feeding 4P emitters. I didn't even need to put them on copper bases. Your case will be 3S1P KK feeding 3S3P modules. So you should have even more voltage sag and less current.
Not sure if 3 emitters on a 20mm aluminum base is OK at 1.4 amps per emitter. My guess is they will be fine, but I wouldn't rely on my guess.
It really does sound like it's going to be a very awesome light. Should be very efficient and blast out a flood of wonderful light with those emitters. Can't wait to hear/see more.
