DiY LEDs - How to Power Them

[Michiganmeds1982]

Nope....need that

 

[Scottydubstep]

Just after a bit of advice. Planning on running

8x CXB3590 3500k
2x HLG-240H-C1750 dimable driver
8x 150mm passive heatstroke

Will these heat sinks match output? Each cob will be running 60-70watts? Will be supplying 4x3 space.

Also looking at running 3x cxb3590 which meanwell driver will run them at 50watts?

Thanks

 

[furalle]

The voltage rating of electrical equipment depends upon the dielectric strength of the insulating materials (including air).

OK but it also says in the datasheet

"Dielectric Withstanding Voltage: 500V AC"

I interpreted that as the isolation strenght. The DC voltage should be even higher than AC I believe. But maybe that is just for current leaking?

 

[furalle]

Just after a bit of advice. Planning on running

8x CXB3590 3500k
2x HLG-240H-C1750 dimable driver
8x 150mm passive heatstroke

Will these heat sinks match output? Each cob will be running 60-70watts? Will be supplying 4x3 space.

Also looking at running 3x cxb3590 which meanwell driver will run them at 50watts?

Thanks

Impossible to say without data I guess. I run a vero29@75W on a Mechatronix ModuLED mega 134100 heatsink and it gets very hot. It's a hassle to passivly cool things with decent temps.

Why passive cooling? A extruded bar heatsink with fans gets awesome cooling capacity and are much cheaper since you dont need so much ALU. 8x150mm heatsinks will weigh much compared to extruded heatsinks with fans.

Extruded heatsinks are only 15% worse at cooling if you keep everything level.

3x3590 can you run with a Mean Well hlg-120h-c1400b or an A-version if you want internal dim.

 

[PilouPilou]

Hello all!

I'm new to DIY leds and I'd like to know which are the models of HBG drivers that match these 3 currents (1050/1400/2100mA) for a clu058 1825? Thx!

 

[Airwalker16]

Hello all!

I'm new to DIY leds and I'd like to know which are the models of HBG drivers that match these 3 currents (1050/1400/2100mA) for a clu058 1825? Thx!

The only thing you're leaving out is the size of the drivers total wattage.there are 200 watt drivers, 250 watt, 320 watt. That just determines how many of the clu-058 you can put on these drivers at those specivic currents

 

[PilouPilou]

The only thing you're leaving out is the size of the drivers total wattage.there are 200 watt drivers, 250 watt, 320 watt. That just determines how many of the clu-058 you can put on these drivers at those specivic currents

oh yes sorry I forgot!! It is just for one cob on a passive heatsink. I meant which HBG driver when I run a single clu058 at 1050mA or 1400mA or 2100mA.

 

[sanjuan]

oh yes sorry I forgot!! It is just for one cob on a passive heatsink. I meant which HBG driver when I run a single clu058 at 1050mA or 1400mA or 2100mA.

The HBG-60-1050 has a constant current region of 37 to 55V.
The HBG-100-60 has a constant current region of 36 to 60V at up to 1600mA.
The HBG-160-60 will go from 1.6 to 2.6A.

Edit: I'm liking the HBG-60-1400 for 36V Cree: https://www.rollitup.org/t/mean-well-hbg-60-1400-on-moduled-giga-with-cxb3590.910676/

 

[ledfan2]

ok so i can go with 12 cxb 3590 36v on a HLG120H-C350 at 0.35A,maybe 13...
i think it will end by 3 drivers and 36 cobs for 1.2mx1.2m tent.this should work well for sog(sea of green) at 20cmx20cm per plant.And get the best illumination over the field cause every plant has its own cob .But i will go under the 0.35A,maybe 0.25A.i cant find anymore the spreedsheet,have anyone this from the cxb 3590 where is calculated to low amperes,i think up to 0.175Ampere?
And have anyone cobs running under 0.35A and can tell experience how much distance is necessary from cob to canopy?maybe no lenses or reflektors necessary at this distance?

 

[Airwalker16]

ok so i can go with 12 cxb 3590 36v on a HLG120H-C350 at 0.35A,maybe 13...
i think it will end by 3 drivers and 36 cobs for 1.2mx1.2m tent.this should work well for sog(sea of green) at 20cmx20cm per plant.And get the best illumination over the field cause every plant has its own cob .But i will go under the 0.35A,maybe 0.25A.i cant find anymore the spreedsheet,have anyone this from the cxb 3590 where is calculated to low amperes,i think up to 0.175Ampere?
And have anyone cobs running under 0.35A and can tell experience how much distance is necessary from cob to canopy?maybe no lenses or reflektors necessary at this distance?

I've never heard or seen anyone running them that soft. But 36 cobs will be very interesting. I'd use extruded bar heatsinks over pins for cost. You can throw probably all 12 on a 36" bar actively cooled if not honestly passively.

 

[G84]

Hi,
I have stupid question about grounding heathsink.
I have 3 bar,and I use 2 squared tubing across them to hold everything together.
Since tubing is touching every bar,can I ground just from plug to 1 of the tubing or do I need to ground every single bar?
I have some difficoult to explain in English ,sorry

 

[Airwalker16]

Hi,
I have stupid question about grounding heathsink.
I have 3 bar,and I use 2 squared tubing across them to hold everything together.
Since tubing is touching every bar,can I ground just from plug to 1 of the tubing or do I need to ground every single bar?
I have some difficoult to explain in English ,sorry

Just the tubing SHOULD work, just make good contact by sanding down the grounded spot.

 

[justsmokedope]

any help would be apreciated
just have a quick question the cree XPEPHR-L1-0000-00901 DC forward current - white, royal blue, blue, green, photo red, far red mA 1000
they can run 1000ma max but the cree hort design has them using a 1050ma driver so does that mean i can put more though these leds.

im basicly going to build the cree hotdesign but with 30 sink pads not 16 as in their example .


also does any ony know of a decent cheaper driver that is basicly the same as a mean well HLG-320H-C1050

thanks

 

[G84]

Hi all
Another question....My Plan is to use clu048-1818 with parallel wiring.
I need driver mounted remote, so I have to look at "b" of hlg and 100k pot dimmer.
Hlg-185-48 b is not good,because its max voltage do not goes above 49v.
So,my next choice would be hlg-185-54b.
My doubt is about how many watt I can use from this driver,since I would use only 50v and driver is capable of 54v

 

[basseye]

I want to diy cobs for my 2 x 2.5 tent but im unsure what brand cobs to use and what brand/size driver to use.i would have posted in the "if your new to led" thread but its closed.been reading here for a while just all these dif options. Im not a cheap bastard so i just want good reliable lighting.tried cfl and it was kinda hot,i mean 300w of cfl i should have just used a 250 hps right?

 

[welight]

any help would be apreciated
just have a quick question the cree XPEPHR-L1-0000-00901 DC forward current - white, royal blue, blue, green, photo red, far red mA 1000
they can run 1000ma max but the cree hort design has them using a 1050ma driver so does that mean i can put more though these leds.

im basicly going to build the cree hotdesign but with 30 sink pads not 16 as in their example .


also does any ony know of a decent cheaper driver that is basicly the same as a mean well HLG-320H-C1050

thanks

50 ma above spec is not a major issue if your well heat sinked, XPEPHR-L1-0000-00901 is Deep Red(Photo red) other Cree leds have different spec ie XPG white are 1.5amp drive. but 1050ma is pretty safe
Cheers
Mark

 

[sixstring2112]

I want to diy cobs for my 2 x 2.5 tent but im unsure what brand cobs to use and what brand/size driver to use.i would have posted in the "if your new to led" thread but its closed.been reading here for a while just all these dif options. Im not a cheap bastard so i just want good reliable lighting.tried cfl and it was kinda hot,i mean 300w of cfl i should have just used a 250 hps right?

what i would do is 5 cree cxb 3590 on a meanwell 185-1050ma driver but thats all i use so my experience is limited lol. @CobKits could walk you through some cheaper options using citi chips

 

[basseye]

what i would do is 5 cree cxb 3590 on a meanwell 185-1050ma driver but thats all i use so my experience is limited lol. @CobKits could walk you through some cheaper options using citi chips

Thanks,so wheres the best place to buy cree cobs in the usa?

 

[kaivorth]

Now I'm trying to balance efficiency, initial cost, and PPFD. Anyone want to make sure I'm calculating PPFD correctly?

What are optimal PPFD numbers I should be shooting for? From my understanding, PPFD is measured from 1 foot away? I was thinking 1000 would be good, then the lower branches will still get plenty of light?

I was eyeballing 6 Citizen 1212's at 1400ma, or 4 Cree CXB3590 36v at 1400ma. They give 900-1000PPFD respectfully, the Cree's being slightly more efficient it seems? Anything else worth looking at and comparing too?

 

[Seriousbuds]

Now I'm trying to balance efficiency, initial cost, and PPFD. Anyone want to make sure I'm calculating PPFD correctly?

What are optimal PPFD numbers I should be shooting for? From my understanding, PPFD is measured from 1 foot away? I was thinking 1000 would be good, then the lower branches will still get plenty of light?

I was eyeballing 6 Citizen 1212's at 1400ma, or 4 Cree CXB3590 36v at 1400ma. They give 900-1000PPFD respectfully, the Cree's being slightly more efficient it seems? Anything else worth looking at and comparing too?

If you're growing in 10sqft your PPF is 769 )according to the Citi Calculator) which many people would say is ideal, however I'm not sure.