lazeerer
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ok this is a double post because i posted in another thread started by lazeerer about these cheap drivers from DX, goodluckbuy, etc. my other post in detail here.
basically im using the DX 18V 5W LED driver and it does put out 1.25A pretty well and stable when on a test load of 5 1n4007 diodes, but when hooked up to a 445 nichia blue, it its bright as heck for about 2 seconds and dims... dim to the point where it even changes modes, like it almost looks like a TEM00 (vs when its bright i can clearly see the lines) it does this every time. turn it on, bright for 1-2 seconds, and then dims... tried a piece of aluminum on the driver which is sandwiched between the driver and the pill and still same thing. batteries are brand new ultrafire 18350's which put out 4.04V under load and im sure can easily deliver the 1.24A the driver puts out. NOTE: when hooked up to a test load with DMM measuring current through a 1ohm resistor, the driver puts out a constant current of 1.24A for well over 30 secs...
EDIT: im using 2 18350 btw...
so why the dimming issue when attached to the LD???
tested LD with a regulated PS going through a LM317 with input/output caps labby style driver and it is bright as hell.
i hope my problem is an isolated issue since i already have more on the way but since DX ships at a snail's pace, i really hope someone could give me out insight on this issue because i already waited 4 weeks for this driver and i really would hate to wait another 4 weeks just to have a handheld 445.
thanks!!
No need to double post man give me a second to type GOD.. look at the other thread you posted this same Question in.