living dangerously.

[yaesumofo]

So tonight I built a 3c mag hosted LUX III mod.
I received 6 TV0J LUX III's today and have been worried about how to host them since ordering. Not any more.
The beam color is just fine. On old "C" cells the thing pulls 1.3 amps from 2.2 volts for 2.86 watts. Direct Drive. Quite bright.
I wonder how this will do with FRESH "C" cells?
Well I will tell you. It does just fine. Sorry no current figures.

This combo produces:
7180 LUX @ 1 meter with a sputtered reflector.
9870 LUX @ 1 meter with stock cut down reflector.
Both with a UCL. and fresh "C" cells
As measured on a LM-631

I know I should work up the current with fresh "C"'s. I am sure the emitter is a bit overdriven at least at first. Hey at least it didn't blow up on me.
Yaesumofo

 

[MR Bulk]

It should be fine with 3 new C's, there are some Lux3's out there running on 3 D's...! So is that "glow powder" around the heatsink base? Very nice, I like the way you kept the Luxeon leads straight and bent the wires 90 degrees to solder onto them. Leaves some working length for later, when possibly even better Luxeons come out... /ubbthreads/images/graemlins/naughty.gif

 

[darkzero]

Very nice and clean. /ubbthreads/images/graemlins/thumbsup.gif

Is that one of my reflectors? Wow, that's alot of lux lost with the sputtered reflectors. Is it normal for that much loss? Do you have a OP PMR to test?

The TV0J should hit about 1.6A on fresh alkies. I just built a 3D TV0J for TIN and it hit 1.8A so I added a little resistance.

thx

 

[IsaacHayes]

That's a lot of current going through there. at 2.2 volts it's pulling 1.3amps!! So is the Vf 2.2 volts? I imagine that would be efficient off of a boost circiut!! or DD

 

[evan9162]

I bet it's a typo (probably supposed to be 3.2V or more). 2.2V is below the turn-on threshold for InGaN based LEDs.

 

[ResQTech]

Ive got a TY0M LuxIII. How will it do DD off 3C cells?

 

[yaesumofo]

ISSAC: Nope they are an old set of "C" 2.2 volts.
Mr BULK:It is the GLOW POWDER and Fingernail polish trick...it works. Thanks.
Dark: Yes it is one of yours. Yes I do have a OP PMR (wish I had more) I will do a comparson one of these days.
MTFD17: the Your TY0M is rated at between 3.99V - 4.23V
It will run fine in a 3"C"
Yaesumofo