some crude measurements of the MT-G2 on a Noctigon board

Nice work, the 1ma shot is pretty cool. I wonder if stadiums will start using these, you could probably expect a few thousand more lumens too.

Very cool test, thanks for shedding some light on the MT-G2 and taking a risk with high current testing. Glad the LED survived!

Oh, what’s the orange piece of plastic hanging out from the star? Just wondering. :slight_smile:

Thanks again!

Silly me, I was beginning to think that 9A driver I have on the way might be too much! :evil:

Kapton tape, to insulate the leads from the reflector.

Gotcha, thanks. I thought it was the same stuff the covered the base of my Noctigon PCB.

Thanks for taking the time to make this test and publish your findings.

It would appear to be Kapton tape (or similar) used to avoid shorts from the reflector.

(Edit) Djozz was faster than I at replying. :)

Thanks for the confirmation Chicago X! :slight_smile:

Interesting test. I would love to see testing on every led in a "real world" situation, say a 3/4" dia x 1/8" thick, round of Aluminum with the led/star on top, instead of huge chunks of aluminum. With the huge heat sink, many things are possible, but with just a small heat sink (like in a flashlight), many things are not possible.

I am not knocking your test. It's good to know what the led can do in "the lab" and I am grateful for your hard work.

Thank you for posting your results here.

Very good info. Thank you very much for the hard work and reporting. This emitter keeps getting more interesting.

Wow. Thanks djozz.

Very nice test, good numbers and well done. Thanks, gives me some ideas…comfychair can be my tester :wink: Would love to see 3000 lumens out of my S2200, would be totally awesome!

Thanks for all the appreciation for the test, it was fun doing it, I had to close the curtains to prevent strange looks from the neighbours :-)

This is great info djozz!

Thanks for doing it, and sharing.

7amps and 7 volts… 49W!! And output is still not leveling out!! Sick! 8)
I know you have good heatsinking here, but with that heat sinking, it sure looks like the sky-is the limit! At least until… poff… 0:)

I also take note the djozz-lumens is lower than Match lumens (No surprise, due to reflector, lens and such) But since you had the emitter on copper, the lumen curve does not flatten out as much as the ones Mach posted (his emitter was on aluminium). This just shows that the copper (Noctigon) mcpcb seems to do its job… :slight_smile: Which is good to know…

Direct drive off two 26650s? Wonder what the current would level off at after the voltage sag...

The Vfs I measured with my QL-355 on an Aluminum MCPCB (2mm thick) place over an aluminum finned heatsink (70mm diameter, 20mm thick) , 26C ambient temperature. No active cooling.

Nice pics!

Only if this leds where CW….or NW, i hate warm white.

It's not WW.

Yea but its to yellowish to my liking :frowning: