DiY LEDs - How to Power Them

Can I handle 200-210 watss withtwo driver hlg185c1050b and lpc100-700
On this heatsink 40x20x8cm
 

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40 euro apprx.
but Im confused as hell
I do not know where Im gonna find screws for the holes on it and bunch of stuff like these little shits Im messing with those issues right now please wish me a good luck to finish this project I have been struggling for a 2 two months
what about your view about the its passive capabilities ?



40cm long of this is iteloksal.PNG
 
Levradus said:
40 euro apprx.
but Im confused as hell
I do not know where Im gonna find screws for the holes on it and bunch of stuff like these little shits Im messing with those issues right now please wish me a good luck to finish this project I have been struggling for a 2 two months
what about your view about the its passive capabilities ?



40cm long of this is itView attachment 3752486
Click to expand...
Good Luck!
My view is limited to the growmau5 vid in which he talks about the calculation based on surface area. However I am not sure if more things come into play, such as the grade of aluminium used.
Here is the vid anyway. You will need to measure every tooth and work out the full surface area.

 
I watched all of those videos and read most of the articles here. Maybe some of the articles could not be understood by me but my heatsink fins has different shape not flat like vibrated water shape in out with tiny measures it definetely increase area
assuming flat and making calculations give me around 100-120 watt but with the cover and the shape of surface increase area can cause it up to where ?
does anyone know ?
 
Someone check my math please:

footprint 2.4*1.2 = 2.88 m2

2.88*800 --- 800 PPFD is med/high intensity level.
2304 ppf total


2304/4.66 --- 4.66 is umols/ sec emitted by cxb/vero29 per par W

494 par W--- 494 par w total is required to meet 800ppfd in 2.4 x 1.2 tent

494/0.418 0.418 is efficinecy of v29@ 1.4A
1196 W Total watts required based on vero 29

1196/51
51W is total watts emitted per cob @ 1.4A
23 Number cobs required @ 1.4A to meet 800 PPFD in 1.2 x 2.4m2
 
UniversZero said:
So, I may have grossly overestimated the passive cooling abilities of my bars. After running for an hour or so, these guys get pretty hot... Not so much that I can't keep my finger on them, but seem to be much hotter than I would have thought... Certainly above 85° by feel alone.View attachment 3642791 So, here's what I'm running...
4 cxb3590 3500k (72v) on a meanwell hlg-185-700a. The sink is the 7.28 profile from heatsinksusa at a length of 24". I'm guessing that im losing all kinds of efficiency here, and possibly might damage the CoBs at full power?

Clearly, I'm going to need some fans, so would one large central fan be enough, of should I put two equidistantly placed on each bar? Any recommendations?
Click to expand...
would you please tell me more about the green cable on your heatsinks side
I think its the one grounding how it works and how should I apply to my project is it a must or precaution can be taken ?
 
well is it gonna directly from the driver green to heatsink thats it ? or should I also connect the plug cable to Im in EU
 
Levradus said:
I watched all of those videos and read most of the articles here. Maybe some of the articles could not be understood by me but my heatsink fins has different shape not flat like vibrated water shape in out with tiny measures it definetely increase area
assuming flat and making calculations give me around 100-120 watt but with the cover and the shape of surface increase area can cause it up to where ?
does anyone know ?
Click to expand...

100-120W sounds right to me, but remember those are heat watts, so maybe half of your total watts in a reasonably efficient built.
 
surface around 1600cm2(up and down surface )+9520(fins surface) =11120
11120 /110 = 100
assuming it is %56 efficient gives me 227 total wattages
well @JorgeGonzales thank you for reminding me the heat watts point

then right after I found the screws proper to mount my led's to heatsink;
-I will mount them on heatsink
-solder all in cobs and monos seperately in series.
-give proper lenght to negative and positive ends of series because this heatsink heavy as cow I dont wanna put drivers weight on it..
-connect drivers same colours together through plugs same colours.
-( probably I should do this one at first : opening holes on the corners to use steel wire to hang it )

I already put all my money on the big parts now struggling with the small parts I dont wanna mess it up tomorrow I will find screws and let you know whats goin on

thank you all for your kind helps.
 
5x CXB3590 3500k $200
5x Ideal 50-2303CR $15
5x Ideal 50-2300AN $10
5x 180mm pin fin heatisnk$100
5x reflector's
1x Meanwell HLG-240H-C1400B$70

Do I need 180mm pin fin heatsinks or can I go smaller?
Anything else you guys recommend to change or just order away?

Is there anything else Cree is coming out with that I should wait for?
 
kaivorth said:
5x CXB3590 3500k $200
5x Ideal 50-2303CR $15
5x Ideal 50-2300AN $10
5x 180mm pin fin heatisnk$100
5x reflector's
1x Meanwell HLG-240H-C1400B$70

Do I need 180mm pin fin heatsinks or can I go smaller?
Anything else you guys recommend to change or just order away?

Is there anything else Cree is coming out with that I should wait for?
Click to expand...
This is basically my light.
You could use smaller heatsinks if you want. My light is made with 120mm sinks.
You need thermal interface paste.
You also need a pot for the dimmer on the driver ($1).
 
jeepster1993 said:
This is basically my light.
You could use smaller heatsinks if you want. My light is made with 120mm sinks.
You need thermal interface paste.
You also need a pot for the dimmer on the driver ($1).
Click to expand...
Oh wow 120mm? Awesome feedback, I'll look at some slightly smaller ones and save some coin.
Didn't even think about thermal paste thanks for that.

I imagine the dimmer is optional. Any specific ones you can link to that'll work for reference so I know what kind to get?
 
The 120mm sinks are a bit hard to find, I think they're a very popular size.
I think you NEED the pot. That is a dimable driver and I think it needs the pot to complete the circuit.
Expert I am not.
It is a 10K pot. Common and available(Radio Shack, Amazon...)
 
jeepster1993 said:
The 120mm sinks are a bit hard to find, I think they're a very popular size.
I think you NEED the pot. That is a dimable driver and I think it needs the pot to complete the circuit.
Expert I am not.
It is a 10K pot. Common and available(Radio Shack, Amazon...)
Click to expand...
Perfect I'll order one along with everything else.

Have you heard anything about new CREE COBs? I read in another thread that a rep mentioned something new coming out. I'm trying to wait to see what it is, but idk if that's just a rumor either
 
Yeah...
Some are already saying the cree 3590's are so last year.
The thing about "state of the art" is it is a moving target. You wait 3 months, almost an entire growing cycle, for the newest/best. Then Citizen has something new about to be released, wait for that??? another growing cycle gone.


Take the plunge.
 
Mine...
IMG_1019_zpsky6hddg1.jpg
 
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