Red LED drivers

[kevind43]

@fonzeka

A little update, I received these drivers today https://www.fasttech.com/products/1105800
Hooked it up to a red XP-E and used a bench supply as power source, but to get full output I had to use 4.6V
Efficiency seemed pretty good but with just one Lion it’s pretty much useless unless there is some way to modify it?
I tried two drives and same result on both.

even though the efficiencies don’t look good on paper you should give the 7135 drivers a shot. i have built many, many lights using the 7135 driver and red xpe’s with very good results. i just tailor the amperage to the heat dissipation ability of the light i’m working on.

[fonzeka]

Yes I will use 7135 instead, 1050mA or maybe 1400mA.