where to buy 1000mA driver for 4 R2 in series?

[Sponge]

I want to make a light with 4 R2 in series which are gonna work at 1000mA.
I don't see any driver on Dx or KD for that. I will use 5 or 6 lion cells in series(18.5V or higher)

 

[Hallmcc]

Try this one,

http://www.ledsupply.com/03021-d-i-1000.php

or this one

http://www.ledsupply.com/03023-d-n-1000.php

 

[Aircraft800]

TASKLED
http://www.taskled.com/

or

The Sandwich Shoppe
http://theledguy.chainreactionweb.com/index.php?cPath=48_49_61

 

[Sponge]

Try this one,

http://www.ledsupply.com/03021-d-i-1000.php

or this one

http://www.ledsupply.com/03023-d-n-1000.php

Delivery to me from ledsupply is 35$, much more than driver :mecry:

 

[Sponge]

TASKLED
http://www.taskled.com/

or

The Sandwich Shoppe
http://theledguy.chainreactionweb.com/index.php?cPath=48_49_61

taskled drivers are too expensive+shipping, sandwich slope's drivers are boost or for too low voltage.
is there any driver which I can build on my own, or to buy some driver on DX and do some modifications?

 

[Visible EM Wave]

The Shark, or Blue Shark from Sandwich Shoppe is a good choice. If you're driving 4 R2's by 2-3 li-ions or 6-9AAs, that's ideal. If you're doing all these on a Mag, don't forget to order a Shark sink from SS as well. That keeps the Shark driver cool.

EDIT: or try the new Shark Buck, if you're looking for a buck driver.

 

[TexLite]

Nevermind.

 

[wildstar87]

Have no idea how well this works, but you could try this thread as well:
http://www.candlepowerforums.com/vb/showthread.php?t=201392

Probably wouldn't be able to handle the 5-6 Li-Ion you are talking about though, unless you ran some in parallel.

 

[Sponge]

Nevermind.

 

[Sponge]

The Shark, or Blue Shark from Sandwich Shoppe is a good choice. If you're driving 4 R2's by 2-3 li-ions or 6-9AAs, that's ideal. If you're doing all these on a Mag, don't forget to order a Shark sink from SS as well. That keeps the Shark driver cool.

EDIT: or try the new Shark Buck, if you're looking for a buck driver.

I don't know what is max input voltage for shark buck. and, yes, I'm lookin for buck driver. I think I'm gonna make it on my own, it will be simple current limiter with linear regulation, something like those on DX, but larger in dimensions - I have place for it, building a bike light, not mag or torch

 

[Sponge]

Have no idea how well this works, but you could try this thread as well:
http://www.candlepowerforums.com/vb/showthread.php?t=201392

Probably wouldn't be able to handle the 5-6 Li-Ion you are talking about though, unless you ran some in parallel.

thanks for link, circuit are very simple. I think I will do something similar, current limiter based on LM 317 or maybe some FET transistors. I don't like those small boards from DX, I think they overheating too much (too much energy goes literally to the wind).
I remember that I seen on this forum current regulator from one member, but can't find it anywhere :candle:. It was PWM regulator, current is regulating with build-in trimmerpot.

 

[VanIsleDSM]

Here are some stats on a driver I designed and built for the MC-E in a series configuration with 6 Li-Ion cells... or same thing as 4 separate LEDs. (I didn't use current sensing resistors to measure this, was only taken with DMM so it's not 100% accurate, but gives a good idea, I plan to retest when I'm home)

I only ran it up to 900mA because I don't want to overdrive an MC-E too hard, and I plan to use 10440 cells, and that was perfect to keep the draw under 2C from the cells. I can easily make it to put out 1000mA though, and I have some extra parts to make another one at home if you're interested.

Unfortunately I'm not at home right now, away at work, but I'll be home in a couple weeks or so if you're willing to wait, sounds like exactly what you need.

 

[Sponge]

Unfortunately I'm not at home right now, away at work, but I'll be home in a couple weeks or so if you're willing to wait, sounds like exactly what you need.

I will wait
You have a PM.