#### martinmkd2

##### Newly Enlightened

- Joined
- Nov 6, 2009

- Messages
- 2

It looks like that extra resistor (R27) is just parallel to the "old R2" (2R2), and together makes 0,24 ohm, for 1041mA. Is this correct?

I want to make 2 mod light. One mod ~1000mA, and other ~350mA. So I was thinking to remove this two, and connect it with simple switch for one position(1041mA), and on the other position ~0.7ohm for ~350mA. Is this ok?

It is a lot simpler that potenciometar solution, and I only need 2 mods not infinite.

One more question. Does anyone knows how much surface area does CREE R2 needs for cooling on 1000mA. Is 6300mm2 (63cm2, 9.76 in2) sufficient? Is the Aluminium Pill container from DX http://www.dealextreme.com/details.dx/sku.27551.

If not, what is the max current R2 can handle with this housing?

HI, I jaust recived driver from kaidomain and it looks little different.

It looks like that extra resistor (R27) is just parallel to the "old R2" (2R2), and together makes 0,24 ohm, for 1041mA. Is this correct?

I want to make 2 mod light. One mod ~1000mA, and other ~350mA. So I was thinking to remove this two, and connect it with simple switch for one position(1041mA), and on the other position ~0.7ohm for ~350mA. Is this ok?

It is a lot simpler that potenciometar solution, and I only need 2 mods not infinite.

One more question. Does anyone knows how much surface area does CREE R2 needs for cooling on 1000mA. Is 6300mm2 (63cm2, 9.76 in2) sufficient? Is the Aluminium Pill container from DX http://www.dealextreme.com/details.dx/sku.27551.

If not, what is the max current R2 can handle with this housing?

Thanks