Matching Drivers and COBs

Airwalker16 said:

Yes, aren't these CLU48-1212's 34.6 Forward Voltage?

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Yes at 1050ma they are 34.7v and at 700ma they are 33.6v

I am not working with LED's yet, but when the time is there I do want to try.

Thinking about a small set up first.
Being a bit autistic about 'nice spread" I thought about getting (9) CXB3590 on (1) MeanWell HLG 185H C700.
In 3 rows of 3.

According to the list on page 1 of this topic this particular driver is suitable for a maximum of (8.7) CXB3590.

But Supra somewhere stated this:
"The driver behaves normal right up until its max voltage.
Once you exceed that voltage, the driver will automatically reduce current until the Vf matches the drivers maximum.
So if you go a few volts above that maximum, the driver will have to drastically reduce current to match the voltage."

And GrowMau5 in a PM told me:
"If you run (8 ) CXB3590 on (1) MeanWell HLG 185H C700, there is a little bit of Fv left, so the driver puts out 104-108% of max current.
9 cobs and current is reduced to around 600ma.
It's is a 200 watt driver. It wants to put out 200w, put cant break the laws of physics ( Watt's Law)
Volts x Amps = Watts
So it compensates. To a degree."

So it is possible to run 9.

My question:
Is there someone here who runs (9) CXB3590 on (1) MeanWell HLG 185H C700 ?
Or any other thoughts on this?

Keesje said:

I am not working with LED's yet, but when the time is there I do want to try.

Thinking about a small set up first.
Being a bit autistic about 'nice spread" I thought about getting (9) CXB3590 on (1) MeanWell HLG 185H C700.
In 3 rows of 3.

According to the list on page 1 of this topic this particular driver is suitable for a maximum of (8.7) CXB3590.

But Supra somewhere stated this:
"The driver behaves normal right up until its max voltage.
Once you exceed that voltage, the driver will automatically reduce current until the Vf matches the drivers maximum.
So if you go a few volts above that maximum, the driver will have to drastically reduce current to match the voltage."

And GrowMau5 in a PM told me:
"If you run (8 ) CXB3590 on (1) MeanWell HLG 185H C700, there is a little bit of Fv left, so the driver puts out 104-108% of max current.
9 cobs and current is reduced to around 600ma.
It's is a 200 watt driver. It wants to put out 200w, put cant break the laws of physics ( Watt's Law)
Volts x Amps = Watts
So it compensates. To a degree."

So it is possible to run 9.

My question:
Is there someone here who runs (9) CXB3590 on (1) MeanWell HLG 185H C700 ?
Or any other thoughts on this?

Click to expand...

If you're concerned about your diffusion pattern and your budget, you should know two things;

1. The center COB LED will make the center of your space too bright. The overlap of all the other lights all the way around will compensate just fine, and now you only need 8...
2. ...and 8 is what you should use to prolong the life of your driver instead of pushing it past its rated maximum.

The only thing you'll lose is the cost of a 9th set of chip, holder and lens.

Thanks!
Leaving out the centre one make sense.
Also the pushing the drivers to the limits.

I will save money on the lenses anyway, because I have no intentions of using them.

Keesje said:

Thanks!
Leaving out the centre one make sense.
Also the pushing the drivers to the limits.

I will save money on the lenses anyway, because I have no intentions of using them.

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I use lenses and I'm very happy indeed with the results.

Hey guys Ive got a quick question. So I wanna build my own light using the 3590. I wanna use the HLG-185H-C1400B but I only have enough money for 1 light right now will running one light on that driver be ok?? Sorry if this is a dumb question or if its already been answered im new to the led scene. Thanks

Im sorry I didnt explain clearly enough. I want to use the one driver that has the capabilities to power 4 but am only gonna be using one light now until I can buy more. So Im asking if that powerful driver will be ok to run 1 led until I can get more, like is the driver to powerful for the 1 led light I have ATM. Thanks

Is it power efficient to run 1 driver for 8 3590 72 volt cobbs? if so what type of driver?

daone said:

Is it power efficient to run 1 driver for 8 3590 72 volt cobbs? if so what type of driver?

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Or is it better to have multiple drivers for better efficiency?

Can anybody answer my question? Is it ok to run one 3590 cob with a HLG-185H-1400B? I will be getting more cobs but want to run one 3590 for now. Will that be ok?

Im a newb at this so I dont really get what you mean by advantage of paralley connected. The reason I want to run the 1 or 2 right now is because thats all I have money for. I plan on getting a couple more anyways and this way I dont have to buy another driver. If I am missing something or if im doing something thats not gonna work good or give me problems let me know. Thanks

Ohh.. I not read your previously post correct,sorry,but If you want run only 1 or 2 COBs, isn't possible run with parallely connect driver, because led will be run at full spec current .. so much hard over max. spec! .. You can run only with constant current driver, there you choosen be good .. not problem

Ok if that wont work what would you suggest as far as a driver for just 1 or 2 3590s? What would be a good driver for just the one or two? What would be a good one that leaves room for adding more? Sorry about all the questions man theres just so much info and options and numbers. Ive tried watching a couple videos and reading alot of other threads but I just dont understand any of it. So any info is greatly appreciated as Im getting ready to pull the trigger and buy. I wish I could find a cree diy led for $200 or even $250. Ive seen a couple but the cheapest cree is $399.

If you want add more CoBs at next time..future, it is good choice for you HLG-185h-c1400B will be run without problems.. I Think that your budget 250$ will be suffice for maybe 4 CXB3590.. If do you know more details, write me PM

If I have two sets of 8 cxb 3590 36v, which driver should I pick if I only want to use 2 drivers? I'm in a 4x4

Hey grodank I know a HLG-185H-C1400B can power 4 3590's at 36v. This thread has alot of good info. Page 1 has a chart that shows how many 3590s you can run on each driver it helped me alot. Peace

Heisenberg1985 said:

Ok if that wont work what would you suggest as far as a driver for just 1 or 2 3590s? What would be a good driver for just the one or two? What would be a good one that leaves room for adding more? Sorry about all the questions man theres just so much info and options and numbers. Ive tried watching a couple videos and reading alot of other threads but I just dont understand any of it. So any info is greatly appreciated as Im getting ready to pull the trigger and buy. I wish I could find a cree diy led for $200 or even $250. Ive seen a couple but the cheapest cree is $399.

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With the dimmable Meanwell drivers you will need at least 2x CX3590 to be inside the driver voltage range. If you go for the HLG-120H-C1400B you can run 2-3 COBS, and with HLG-185H-C1400B you could run 2-4 COBS I believe. You can get smaller Meanwell drivers that will run a single COB but they are not dimmable I believe.

GroDank101 said:

If I have two sets of 8 cxb 3590 36v, which driver should I pick if I only want to use 2 drivers? I'm in a 4x4

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DO you already have these chips? If so, get this driver for every four chips;

Heisenberg1985 said:

Hey grodank I know a HLG-185H-C1400B can power 4 3590's at 36v. This thread has alot of good info. Page 1 has a chart that shows how many 3590s you can run on each driver it helped me alot. Peace

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Perfect.

I ended up with 72V chips, four to each HLG-185H -C700B driver. It's effectively the same as 36V chips on a -C1400B.

They knock the knickers out of a 2x3' space and will effectively light up to 3x4' for veg. Once dialed in, I think this combo with 80 degree lenses will be very serious competition for 315W CMH or 500W of HPS.

MrTwist1 said:

With the dimmable Meanwell drivers you will need at least 2x CX3590 to be inside the driver voltage range. If you go for the HLG-120H-C1400B you can run 2-3 COBS, and with HLG-185H-C1400B you could run 2-4 COBS I believe. You can get smaller Meanwell drivers that will run a single COB but they are not dimmable I believe.

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You want the Meanwell B model drivers with external dimming leads, but not for the reason you might think; if you leave them capped off, the driver runs at 8% over its maximum rated current! This way, your COB LED chips get 54W each instead of 50, this adds more light.

The lenses help better focus the light onto the target, wasting less from lateral scattering.

Running them active with fans also helps, by keeping them cool. Let's just say I take this to an extreme lol

Such attention to detail will boost your output from the low 800 PPfD range to over 900 PPfD over that 6 sq ft, a difference you'll definitely appreciate.

@ttystikk no I don't yet but plan to order soon. I already have the 4x4 tent. so basically you think I should use 4 drivers instead of 2? Really wanted to minimize number of drivers in my build.