Driver for two NiMH

[ecotack]

I'm looking for a driver to power a Cree Q5 from two NiMH. I would like to run it at ~600mA with no modes.

Quick look on DX gives me two options SKU.04382 and SKU.04735. I didn't find any on KD that had only one mode. Has anyone used these before and can recommend which one to go for?

 

[mudman cj]

I can't tell you if one works better than the other, but after reading through comments people posted I learned that 4735 is larger by 1mm, which makes it not fit in some AA light hosts. Maybe that will help...

 

[KowShak]

DX SKU 7882 would be my choice.

They are more expensive than the two drivers you've found but they can are adjustable to supply 1000ma or more to the LED where as the two you've selected can only supply 700ma, plus the efficiency of 7882 is good too.

SKU 7882 can also be modded to remove modes....

 

[ecotack]

Thanks KowShak, I ignored SKU.7882 because of the modes.

I'm running 4 LEDs, so I could power two in parallel at 1200mA each and reduce component count.

 

[Mr_Light]

I have used about a dozen of single mode 700mAh DX Driver sku.4382 without problems. If you find that they can be used in parallel please post an update. In another thread Electrolumens said he didn't think they could be used in parallel (haven't tried it myself).

 

[Mr_Light]

DX SKU 7882 would be my choice.

They are more expensive than the two drivers you've found but they can are adjustable to supply 1000ma or more to the LED where as the two you've selected can only supply 700ma, plus the efficiency of 7882 is good too.

SKU 7882 can also be modded to remove modes....

I have used quite a few of these also with good results. I do believe these are constant VOLTAGE rather than constant CURRENT drivers. I have set these up by hooking up batteries to this driver and connecting the LED leads to a multimeter and dialing in the voltage I want for the LED I am driving.

 

[ecotack]

I have used about a dozen of single mode 700mAh DX Driver sku.4382 without problems. If you find that they can be used in parallel please post an update. In another thread Electrolumens said he didn't think they could be used in parallel (haven't tried it myself).

It was the LEDs I was thinking about running in parallel, two per driver. If these drivers where regulated then they should work in parallel, but I am theorising that they are not, hence the trimmer to fine tune them.

 

[kosPap]

DX SKU 7882 would be my choice.

SKU 7882 can also be modded to remove modes....

How? I am interested...

 

[KowShak]

How? I am interested...

It can be done... The deal extreme forum explains:

http://www.dealextreme.com/forums/Default.dx/sku.7882~threadid.35909

There is also a picture to explain things a little better:

http://img477.imageshack.us/my.php?image=uielimcv9.jpg

Hope this helps.

 

[kosPap]

thanks man!