djozz tests

Nice.

Very nice Djozz! The signature line was huge, glad you started this, thanks for all you do here!

Djozz, improving BLF’s signal/noise ratio since 09/07/2012

And it makes it easy to point newbies to this thread for 2 purposes:

1. Gaining knowledge, without retyping it all the time.

2. To show them that testing is a requirement for pushing the boundaries of our lights.

Thanks djozz for being such a valuable, informative, and friendly part of BLF.

Sticky :smiley:

So I take it the 219B V1 is coming soon?

Yes…thank you sir. I was just about to look for a test thread on a red xp-e2…so you helped me out there, lol.

Good catch, THE_dAY very kindly gifted me three Nichia 219B V1 4000K leds from Illumn.com, they are underway somewhere. When they are in I will test one (not to death, I will use them for a triple). I am mainly curious about the Vf compared to the old 219B and the 219C.

Thanks djozz .

Sweet. Yeah Vf, and maybe you could see if lumens are still increasing at 3amps?

This is fantastic! I can’t tell you how many times I’ve referenced your data/tests to compare information for purchasing a particular light. Like most of the previous posts have said, your work is invaluable.

Lets make this thread a sticky, it provides valuable info to us modders. Thank you for your hard work.

On a side note, the link to the xhp70 led seems incorrect :stuck_out_tongue:

+1

Nice testing job! :party:
Thank you for everything, don’t stop :wink:

Thanks for the nice comments :-) (was not the intention, it is all old work)

corrected the link, I hope the rest works ok

Hi djozz, lot of charts, but no V1. The one I am trying to find…

I already use the 219B V1 sw50 (5000k) @ max 2,4A* for momentary use, without issue, so far so good. It replace an old XML-T6. Temperature management seems to be more an issue than tint shift, get hot fast… Anyway, not using max for more than 1mn.

The 219C’chart you released lately looks great for a 80CRI. Do you think it would be possible to replace a XP-L HI with a 219C (I don’t mind loosing lumens, but the XP-L HI is really too cool) or it would be better to simply use a XP-L warm high CRI?

Even tough the 219C has some slight turquoise tint, the CRI is nicer compare to factory XM-L2 and other Cree cool white emitters…

Still prefer the 219B-V1 as a high CRI neutral white but above 2.5 –3A the 219B-V1 may fry easily…

I would like to build a high CRI thrower single 18650… But with a reflector larger than ET sticks…

(*2,4A was measured with XML)

I was also wondering:
If a dedomed XP-G match the beam profile of a dome XP-E, does a dome 219C (which is close to a XP-G) would have the same beam than a XP-L HI (which surface is wider than XPG/219B and equivalent to a XP-L dedomed) within same reflector, of course…

Anybody some ideas?

Thanks a lot Djozz.Your posts are “go to” posts.

great work djozz!

and all collected at one place its even more impressive…

The 219B-V1 I have been using have a nice low Vf. Had a triple hooked up to a 105C 8*0,35+6*0,38 and guess what: Even with my very long and thin dmm probes I got 5.08A!!! I wouldn’t try these with a FET-driver, not even a triple, way too much amps, too much heat generated. A member of the german forum fried a triple with a FET-driver, got over 16A initially.

Outstanding work djozz! Keep it going please, very appreciated.

That is a nice thing to look forward to. I was indeed planning using a FET-driver, but in a 18350 host, so that may just be perfect .