Lets talk about "Other" COBS !

Rocket Soul

Rocket Soul

Well-Known Member
I've seen diffrent numbers on the clu48 1212 from some supplier, drasticly lower lumens. Not sure if they based it on measurments or where they got them from. But they look great thru the citizen selection tool.
 
Abiqua

Abiqua

Well-Known Member
sixstring2112 said:
not bad,wonder if anyone makes holders for these ?
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https://www.cdiweb.com/LED-COB-Connector/ProductsGrid/11143

Looks like Bender and Bjb make holders for the CLU04X ^

Here's the bender's...
https://www.cdiweb.com/ProductDetail/431TYPZ1-Bender-Wirth/519518/



and the BjB's
https://www.cdiweb.com/ProductDetail/47319203050-BJB-GmbH-Co-KG/592663/



Ideal too...
https://www.cdiweb.com/ProductDetail/502100AN-Ideal-Industries-Inc/571983/

Just look thru the 1st link: Connectors :peace: I am partial to the bjb's myself.
 
alesh

alesh

Well-Known Member
JorgeGonzales said:
Is there a downside to doing it automatically? I can just say "make 400 points" and the software lines it up with 380-780.

The Citizen graphs just had the 4000k hidden at both ends completely, so eyeballing either way.

Oh, and one other thing, wouldn't robincnns method work fine with a quantum meter for comparing cobs relative to one another?
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I can't think of any. I just wasn't satisfied with the automatic function in DigitizeIt so I mostly don't use it. What software do you use? I've tried several different ones but can't say that I liked any of them.

I think that @robincnn meant to use a quantum meter to take measurements.
 
JorgeGonzales

JorgeGonzales

Well-Known Member
alesh said:
I can't think of any. I just wasn't satisfied with the automatic function in DigitizeIt so I mostly don't use it. What software do you use? I've tried several different ones but can't say that I liked any of them.

I think that @robincnn meant to use a quantum meter to take measurements.
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I used something called GraphClick. It's free, but for OS X.

Today I looked up Nichia stuff, they provide SPD data in tabular form next to their graphs. That was a nice surprise.
 
JorgeGonzales

JorgeGonzales

Well-Known Member
Maybe write CDI and ask them to stock the CLU048-1212-353M2K1, which is the 80 CRI 3500K version.

This can be combined with:

Cob holder: BJB 47.319.2030.50 https://www.cdiweb.com/ProductDetail/47319203050-bjb/592663/

Reflector: 90 degree Angelina https://www.cdiweb.com/ProductDetail/F13839_ANGELINAXWB--ledil/569614/

Heatsinks...I don't know. Keep in mind these 1212s are about 45% efficient at 50W, better than a Vero for half the cost, but dissipating more heat than a CXB3590 obviously.

I'd suggest running around 37W @ ~48% efficiency, maybe paired with one of these:

https://www.cdiweb.com/ProductDetail/LPF11180ZHEB--mechatronix/573584/

Or bump it up to 1400ma and 50W and I'm sure this would rock:

https://www.cdiweb.com/ProductDetail/MODULEDMEGA13450B-mechatronix/574064/

Or a cheap fan/heatsink combo.

I used the 9980 in my build, but at 35W and a more efficient CLU048-1818.

But none of this is possible, at least in the US, unless people ask them to stock the cobs. Buying Citizens is hard, and they don't seem to realize they've cornered the market on something everybody wants.
 
JorgeGonzales

JorgeGonzales

Well-Known Member
Evil-Mobo said:
How many 1212's can be run.on an hlg240-1050b?

Or 1818's?
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Didn't we just have this conversation in my inbox? :)

Here is where you can get the Citizen simulator if you want to crunch numbers: http://ce.citizen.co.jp/lighting_led/dl_data/sim/CITILED_ver5_Selection_Tool_WEB.xlsx

In case you can't run the spreadsheet, the 1212 is at about 35.4V/37.1W at 1050ma...so 6 I guess. Doing math in my head, but that sounds reasonably correct.

Oh yeah, the 1818 gets a bit awkward I think around there. It's a higher voltage cob, so 51.1V/53.7W give or take at 1050ma. So, er, 4? With a bit more overhead left in the driver.
 
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