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

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).

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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.

Why? Did you tried to ramp its current up and did not succeeded?

No I don’t have LD25. Just from fasttech data I thought it has a max limit at 3A.

Oh la laa.It is time to take out of the drawer my Cometa,which gives 164Kcd with the Z1 original lens…. :slight_smile:
Is there some special difficulty with the Cometa’s mod?

All that careful consideration and adjusting described above I do for every driver not just DD ones, every flashlight build I try to give its own optimal configuration.

The LD25 can be a nice option too but has its own characterics, positives and negatives. It does not come in many sizes for example (i.e. I just reflowed a 15mm FET+1 driver with A6 firmware, working perfectly in a small EDC). Does it really go up to 5A?

Don’t get me wrong, I prefer current regulation for a lot of flashlight builds, but in many other situations DD is the way to go for me.

Okay, I don’t have any numbers but here is my herd of throwers anyway :

From left to right :

  • Olight M3XS Black Flat
  • Cometa “White Flat”
  • Amutorch JM70 XP-L HI (tried a “White Flat” in there, but the TA FET driver on Turbo made it turn Blue/Purple… back to normal though after stepdown)
  • Emisar D1S Black Flat
  • Emsiar D1 Black Flat
  • Olight R20 “White Flat”

Now the beamshots, in the same order :

My impressions ? Well the Emisar are perfect for Black Flat because the head is insulated from ground, as well as the M3XS…
For the others, the “White Flat” is perfect !
Now the most impressive IMHO are the Cometa which turns into a white laser with this LED :-p and the R20 which really throws a strong beam with its tiny reflector… Oh and the beam is really clean, without artifacts.

Good work! The Cometa looks awesome id be interested in the throw numbers if you bother taking any.

Where did every one buy the LEDs from? Any international friendly sources?

When you say “white flat”, you mean this new OSRAM KW CSLNM1.TG led?

Yup, the one LED4POWER sell on his website

Like here.

I see,thank you.

If driven to maximum Osram White Flat will beat good old xp-g2s42b from 20-30% and new production process XP-G2 emitters will be beaten for about 50% :beer:

I don’t know for other but in B158B host I had 330 KCD with old dedomed XP-G2 S42B but now with Osram White Flat I have 430KCD so yes with B158 you will get close or brake 400KCD mark depends on modding techniques. Not sure for beam size(even under precoolimator)… I would also like to see more lumens from Osram :slight_smile:

Same happens with Mikos super reflector 15$ thrower (Supwildfire something) that should easily brake 400 kcd mark.

Yes… Really no doubt that OW is better than XP-G2 S42B but not in everything… 2B has larger die, and it is well suited for mentioned unregulated FET DD drivers since high current cell does not bothers him…

So why FET DD some people despize? Well it depends how you use flashlight… If you don’t have need for longer runtimes on turbo than real question is why not? Especially with older emitters like g2s42b :slight_smile:

But with OW i think it is nice thing to stay in regulation.

Has anyone considered to put this one into the BLF GT or Astrolux MF04/Mateminco MT35+? It would be quite some laser beam. :-D

it will be tough time to focus the beam

I think that’s the old version of the LD25.