Current vs Output with Cree R2s

MrNaz · Apr 6, 2009

I am trying to decide whether to power my Cree R2-WG LEDs using AMC7135 units at 1050mA or 1400mA.

While my first response is "more is better", I have to question whether it's worth it. 1050mA would yield a roughly 30% extra runtime, and I suspect once you get up that high, overdriving the LEDs an extra 350mA does not yield a noticeable amount of extra output.

Can anyone shed some light on this so I can make a more enlightened decision?

saabluster · Apr 6, 2009

Here you go.

Sgt. LED · Apr 6, 2009

You want to go to 1400 think about trying a K2. It will last longer

Packhorse · Apr 6, 2009

Sgt. LED said:
You want to go to 1400 think about trying a K2. It will last longer

But it will not be as bright, so whats the point?

metlarules · Apr 6, 2009

It will be close enough with these. http://www.cpfmarketplace.com/mp/showthread.php?t=190658
Besides whats a few lumens if it won't last.

old4570 · Apr 6, 2009

Just because you use a 1400mA driver dont mean the R2 will draw 1400mA .
It just means the ability is there .

My R2's are drawing from 700mA to as high as 1.2A ...

Im going to play with drivers to see what happens , but it all depends on the driver Cree combo , I got some rated to 3Amp but I havent seen more than 1.5Amp from it with a MC=E ..

Go ahead , so you reduce the 50,000 hour life to 5000 hours , so you blow a $7USD Cree R2 ... Knowledge is priceless ..

Current vs Output with Cree R2s

MrNaz

Enlightened

saabluster

Flashlight Enthusiast

Sgt. LED

Flashaholic

Packhorse

Flashlight Enthusiast

metlarules

Flashlight Enthusiast

old4570

Flashlight Enthusiast

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