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

So you got 110kcd at 4A in a C8 with the 2mm white flat. That doesn’t sound that good since 4.5A with a dedomed XPG2 will get around 170kcd.

I just did some measurements using a bench power supply on a 2mm white flat I got from mouser. The output peaked at 8.25A. In an EE X6 head I measured 109kcd at 6A. This beam intensity was a bit disappointing. The focus was good, so I can’t explain why it’s low.

Just wondering what 4 of those 1mm² LEds will do in a TN40S

the driver is boost from 2S to 12V at 4A, so the LEDs will be in a pretty good range driven

^ Good idea!

is the OSLON BLACK still good In say a MINI GT, or could the FLAT white replace it still?
any advantage?
thanks.

Given the similar performances and prices, I would go for the new White Flat just to avoid any problem with grounding issues…
I put some black flats in my Emisar D1 and D1S, but some strange behaviors are to be expected :
when I wrap my hand on the D1, which is equipped with a SS clip (clipped) I have a faint glow on the LED if I put my thumb on the switch bezel :disappointed: the slight conductivity of the skin is enough to allow some low current between ground (via the clip) and the MCPCB…
That means that you can’t throw the light in a pocket full of keys/coins because it could power ON on direct drive…

The white flat is easy to use, with no short between thermal pad and cathode so I’ll now choose it for any thrower (aspheric first, of course)

Go with the white flat, it has a neutral thermal pad so you don’t need to worry about any insulation or other things.
Also Led4power sells them already reflowed onto MCPCBs so you don’t need to do it yourself and possibly end up with a bad reflow or dead LED.

The white flat is ideal for single cell lights with a linear driver.
A constant current driver though, DD drivers will kill them,
unless you use a crappy battery and / or crappy electrical path and STILL only have full output with a freshly charged cell…

Yes. I agree since all your mentioned variables must be prepared for FET DD setup but hey! Mine did not die yet (1 and 2mm version).

So linear drivers.

Do you remember these guys: Nanjg 105C, AK-47, Nanjg 101-AK-A1, Nanjg 105D etc… That is if you are on the budget.
Chips stacking art (AMC 7135/8 current regulators). That seems like forgotten art? :slight_smile:

If you want the best there are L4P drivers, TA series and others…

For your viewing pleasure good, nice and cheap:

Suffice to say both drivers PWM free.

Cheers

I would need something in 5-5.5A on high, 2-2.5A on med and 0.5-1A on low… I don’t care for PWM. High or turbo will be most used mode anyway :beer:

Pretty easy to do:

For the LD-29 each stacked R050 is 1.5A, R100 is 0.75A, R200 is 0.375A, and so on.

Wow, that’s nice :slight_smile:
Do you know if the memory-function on this drivers can be deactivated?

There must be some way, but better wait for at least some expert to chime in…

Cheers

Well, I doubt that my measrurements are combarable only for myself… Maybe have to think little better way to do those.
But compared throw and it was pretty same than EmisarD1S, was hard to say which was better.

What's all of this C8 gossiping? Does this mean the white flats are not well suited for its reflector? Or WTF?

Dedomed XP-G2 at 4.5A does 170Kcd in a C8? How is that? As far as I know an XP-L HI at 6A will maybe do 90Kcd, doesn't it? It's hard for me to believe the XP-G2 doing that much better against the XP-L HI 5700K in a Sofirn C8T.

Cheers

Throw is from the led /reflector size and led intensity/mm2 emitting surface. A dedomed XP-G2 has higher intensity/mm1 than XP-L HI. that is all.
See my measurement tables. You will find over 200 measurement and it has dedomed XP-G2 and osram white flats and etc.
My C8 with dedomed XP-G2 made 151,7 kcd from 850 lumens. The second best is 136 kcd with dedomed SST40 in a C8. but with 2000 lumens.

I wasn’t trying to start a competition about who’s C8 is the best. I’m just trying to understand each report of a measurement of this new LED so we can know it’s capabilities.

Of course comparison of different v people’s results is made difficult because of different measurement conditions and equipment.

… i.e. the hotspot of these leds in a reflector light is around 6000K, at which colour temperature all budget luxmeters read too much, think between 5% and 12%.

Barkuti mentioned the LD25, which is cheap.
Ordered some low resistance resistors to mod them up to 5 Amperes.

Yeah, the forgotten art of stacking 7135’s :slight_smile:
Old school. I still have some 80 pieces of Raptor Claws though.
But those things always eat at least 150 mV, which is a shame.
And then there’s the audible PWM, which i have grown to despise…
Not to mention the war between retaining rings and the 7135’s on the battery side…
The 3 modes of the Nanjg’s are well spaced though. :+1:
Better than the LD25.

Barkuti mentioned the LD25… And I can see they are from Simon?

IF so just contact that guy and he will do 10 plus order for free…

I ordered more than 200 drivers from Simon (I had special wishes without any amc 7135 current regulator on nanjg AK-47 C1 for making Djozz fet driver) for ultra budget price.

About that LD 25…

So basically:

- Aligator clamps for positive DMM wire clamped to spring

- Negative should be classic DMM wire probe touching driver outer ring?

  • With small wire we are raising/reducing current

But all that can’t be done with classic DMM? :smiley: Right? We need constant current power supply for that?