OSRAM CSLNM1.TG & CULNM1.TG 1mm², CSLPM1.TG & CULPM1.TG 2mm²

Just ordered 4 pieces. Sure it will be a while before I see them. Looks interesting and can’t wait to experiment with them.

:open_mouth: :open_mouth: :open_mouth: :open_mouth: :open_mouth:

Got my 3 samples…let’s mod !

Thanks for starting this thread and the comprehensive summary in the OP!

Geuzz, can’t wait to hear more about your Cometa mod. I read it is hard to focus it in the Cometa. Did you have any issues focusing it?

Ok. I went into my cold shed for you guys and have some measurements.
I think I usually measure a bit lower than others around here and I measured some lights again to have a good(ish) reference.

I have a almost clear image of the die, but I feel it can be a tiny bit better focused.

I did not measure ampdraw, but I got best results using an old protected keeppower 18650. With better cells I got worse results. So it is indeed better to keep the amps down a bit.

D1s stock (5d) 115kcd
Souponfire thrower, fet dedomed xm-l2 205kcd
Cometa osram throw king 315kcd

That is a pretty good result Geuzz, close to the B158 with dedomed XP-G2 but with a smaller lens.

I will put one soon in my B158B.

Nice. I still have a b158 laying around, maybe I’ll order some more osrams depending on your results.

At least I have believe in your numbers not being to high also.

With dedomed XP-G2 now it is making 300 kcd

Did you give it hell with the DD driver??

From his post #19:

Thanks, i missed that. :+1:

Seems many of you is having problems overdriving this emitter with unregulated shite drivers. Bad stuff. Let me suggest you grabbing some of led4power's adjustable linear drivers or a more modest but fully current adjustable LD-25 (new version tested by HKJ), available at FastTech or Simon's store.

^:)

I’m a bit surprised that you are not mentioning the most obvious choice: the good old 8x7135 lineair driver (original 105C or Convoy’s biscotti version), add chips to taste. (just used one with 12 chips for my “White Flat” D80 build)

I still do not see the crusade that some people have on unregulated drivers, for many flashlights they work fabulously and are my first choice, and getting less light while the battery is drained is really not the end of the world (some people even appreciate that).

1 Thank

Well, crucade… It’s DD that’s the hype i.m.o.
Yeah, they’re cheap to manufacture and they get you big outputs, but that only lasts a very short while.
Who would appreciate that? And why?
You often can’t even optimize the electrical path or else the current gets too high.
With single emitters with low Vf this means undermining the electrical path (lower discharge battery, crappy springs and thin wires) which means you COULD have full output during half the charge or more, but you don’t…
The LD25 is not (much) more expensive than an Astrolux DD driver, is it?
You can resistor mod it to 4 Amperes if you want (maybe more?).
Yeah, it’s only 3 modes, and the strobe is not very hidden (double tap), but it’s CC regulated and without PWM. :+1:
7135 drivers suffer from considerable Voltage drop, unfortunately…
I forget, but i think it’s minimum 0.2 Volts you lose in a 7135.
The often audible PWM can be annoying too.

I do not really have a crusade against, but let me point out that at least some of you are living on a draw-backed technology mostly because of the available software for a few ATtiny controllers + direct MOSFET drive + 7135s. The drawbacks I am speaking of is lack of regulation and pulse width modulated lower modes.

Lack of regulation means the user needs to carefully consider and adjust lots of parameters to avoid overdriving emitters or just running them past their optimal points. This can mean tuning resistances for the whole chain of parts inside a flashlight.

PWM in lower modes may not be an issue, but it can be. And while MOSFETs can cope well with high frequency PWM, 7135s do not and their regulation goes out of whack. PWM and video filming is also a no-go.

Since I do not require the boons of ToyKeeper's software I opt for regulated linear or fully regulated buck/boost peace of mind drivers.

Cheers :-)

Okay so my older Cometa with a Dedomed XPG2 does around 330kcd and my numbers always read heaps lower than every one else. I am not sure what bin the XPG2 because i bought it in the beginning of 2016 from Cutter on a Noctigon board.

$4.40 at FastTech.

It actually is much easier and all modes can be independently adjusted:

The current adjust point is a pinhole with annular ring where you can insert and momentarily solder a small wire to tap on negative/ground for adjusting. Be aware of the voltage drop in the power supply to driver path (wires and connections) when raising current to high levels, 0.2Ω in the path at 5A is a full volt. Increase supply voltage accordingly to see and tune higher values.

Cheers ^:)

Barkuti:
But the LD25 only capable 3A max and this led need 5A to reach it full potential.