Led4power.com : LD-4 CC linear drivers, ILC-0/1 illuminated tailcaps, optics, MOSX, copper DTP MCPCBs...

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KevinZA1988
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Hmmmm… So when will these be available?

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LD-A4-20 in 2-3 days, LD-B4-20 a little bit later.

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Thumbs Up Beer

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contactcr
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Same firmware and features?

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Yes, this is still LD-x4 generation, just 20mm diameter (with some pcb modifications for easier use, such as bigger wire holes and soldering pads).

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Neven, do you see any chance to offer Carclo 10507 triple and 10621 quad optics in your shop?

Unfortunately, the 10507 seems sold out but was offered for a very reasonable price in the past.

Hvala vam! Smile

Cheers, Thomas

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I will see, it seems demand for optics is quite low, so I'm currently investing more in custom stuff not available elsewhere like MCPCBs.

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What about offering different sizes of drivers? currently i only see the 17mm in three varieties

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contactcr
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Yokiamy wrote:
What about offering different sizes of drivers? currently i only see the 17mm in three varieties

You mean like this

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contactcr wrote:
Yokiamy wrote:
What about offering different sizes of drivers? currently i only see the 17mm in three varieties

You mean like this

That looks like it, indeed.

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LD-A4-20 (20mm version) is available:

LD-A4-20

 

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New mosX (called aluramic now) for Osram and Luxeon IR LEDs, 20mm and finally in 16mm size:

ALURAMIC 3030 20mm

ALURAMIC 3030 16mm

 

 

I will add linsings for Osram 4715AS-EA and Luxeon IR on these boards too.

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led4power wrote:

LD-A4-20 (20mm version) is available:


LD-A4-20


 

I must have missed that one.
Actually i was looking for a 22mm driver, otherwise i’ll just have to order an adapter retaining ring

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Received my order today, i just ordered thursday, so shipping is really fast.
My order came well packed and in a sealed ESD bag, the quality of the items and packaging of LED4POWER is top notch!

I will keep you posted with results

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A little bit thicker (and stiffer) bronze spring with the 12x9mm dimensions and measured ~7.8mOhm of resistance (right one in picture below next to the 11mOhm 1.0mm wire spring):

7.8mOhm bronze spring

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Those Aluramic boards are beautiful, and those bronze springs look like they’ll do nicely! All-around great upgrades. Party

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Hi Neven,

would you be willing and able to sell the mosX material as round blanks? This would be great for some highly integrated driver/MCPCB combos….

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When lh351d 4000k will be available?

KevinZA1988
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And how about 14mm DTP MCPCB’s?

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kikkoman wrote:
Hi Neven, would you be willing and able to sell the mosX material as round blanks? This would be great for some highly integrated driver/MCPCB combos....

mosX material can't be used for DIY because there is layer of titanium above ceramic on which copper is electroplated. You can't etch titanium with anything that's not terribly dangerous for DIY.

I tried to etch it with standard FeCl3 solution and it does remove copper layer but titanium layer stays.

My manufacturer said that they have problems with sourcing this material so batch of 16/20mm mosX/aluramic boards for IR LEDs is probably my last of this kind.

 

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Chatika vas Paus wrote:
When lh351d 4000k will be available?

I will not stock it anymore unless I find good tint.

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KevinZA1988 wrote:
And how about 14mm DTP MCPCB's?

 

Demand for that is probably too low.

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led4power wrote:

kikkoman wrote:
Hi Neven, would you be willing and able to sell the mosX material as round blanks? This would be great for some highly integrated driver/MCPCB combos….

mosX material can’t be used for DIY because there is layer of titanium above ceramic on which copper is electroplated. You can’t etch titanium with anything that’s not terribly dangerous for DIY.


I tried to etch it with standard FeCl3 solution and it does remove copper layer but titanium layer stays.


My manufacturer said that they have problems with sourcing this material so batch of 16/20mm mosX/aluramic boards for IR LEDs is probably my last of this kind.


 

Too bad, but thanks.

Does the supply shortage mean the “standard” MOSLED will be gone too?

ehh, just noticed my mistake… I meant the MOSLED, not the mosX/aluramic. I’ve been able to etch those with FeCl3 after removing the solder mask in select spots, although the bare alu needs to be masked off too. (It goes faster than the copper!)

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I made only one batch on mosled (black) pcbs, it's not really high performing material compared to mosx and dtp, so I will not stock those either.

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led4power wrote:

KevinZA1988 wrote:
And how about 14mm DTP MCPCB’s?

 


Demand for that is probably too low.

I have not seen one proper 14mm DTP MCPCB available anywhere. Maybe you should consider making 100 or so. Even if they are expensive. It’s a special item, and what better place to stock it than at led4power.com

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Hi Neven,

I have tried one of my 4-6 Amp LD-A4 drivers with a single SST-20 set at 4A high mode. I measured the tail current at only 3.73A, and voltage over the LED at 3.436V (which is spot on for 4A for this LED). This was on a fully charged NCR18650GA. I did not measure the current from the driver to the LED. Is the measured 3.73A tail current close to what the LED is getting? Something doesn’t make sense to me.

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Neven, still waiting for your LH351Ds 4000K 90 CRI. What’s the forecast? Is there a point in waiting longer or I should look for something diffrent?

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KevinZA1988 wrote:
Hi Neven, I have tried one of my 4-6 Amp LD-A4 drivers with a single SST-20 set at 4A high mode. I measured the tail current at only 3.73A, and voltage over the LED at 3.436V (which is spot on for 4A for this LED). This was on a fully charged NCR18650GA. I did not measure the current from the driver to the LED. Is the measured 3.73A tail current close to what the LED is getting? Something doesn't make sense to me.

Your clamp ammeter is probably off by a little bit (somewhere in BLF I reported that UNI-T clamp meters can be off quite a bit, but I don't remember which thread it was), when I'm testing drivers (with 0.1% accurate Rigol DP811) currents are usually accurate within 1% in 99% of cases.

 

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1stein wrote:
Neven, still waiting for your LH351Ds 4000K 90 CRI. What's the forecast? Is there a point in waiting longer or I should look for something diffrent?

I doon't plan to stock that LED anymore, unless I find really good tint, but chance for that is close to zero based on my experience. LH35D is really nice LED overall, but it's not the best at anything (CRI,output,tint, overdriving...) so it's not very interesting for flashlight modders.

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led4power wrote:

KevinZA1988 wrote:
Hi Neven, I have tried one of my 4-6 Amp LD-A4 drivers with a single SST-20 set at 4A high mode. I measured the tail current at only 3.73A, and voltage over the LED at 3.436V (which is spot on for 4A for this LED). This was on a fully charged NCR18650GA. I did not measure the current from the driver to the LED. Is the measured 3.73A tail current close to what the LED is getting? Something doesn’t make sense to me.

Your clamp ammeter is probably off by a little bit (somewhere in BLF I reported that UNI-T clamp meters can be off quite a bit, but I don’t remember which thread it was), when I’m testing drivers (with 0.1% accurate Rigol DP811) currents are usually accurate within 1% in 99% of cases.


 

I’m using a Fluke 319 that can zero before DC measurement. When this driver was used with the Luxeon V it was set at 5A and I measured 4.946A. It’s strange, because the Fluke 319 is supposed to have a 1.6% tolerance on the 40A setting. I’ll do a further investigation….

Acebeam L16, BLF Q8, BLF A6, BLF FW3A, BLF FW3C, Convoy L2, Convoy L6, Convoy C8+ , Convoy S3, Convoy M21A, Convoy S11, Emisar D4, Fireflies E07, Jaxman E2L, Olight S1R Baton II special edition series, S2R Baton II, Nitecore HC65, Olight H1R Nova.

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