DiY LEDs - How to Power Them

robincnn

robincnn

Well-Known Member
Matt Kitski said:
Is this the correct one? Is one enough? Thanks!

http://www.ebay.com/itm/Mean-Well-HLG-120H-12B-12V-10A-120-Watt-Enclosed-Switching-LED-Power-Supply-/111556965392?hash=item19f9503410:g:8QgAAOSw6aVUme9h
Click to expand...
No
You will need to get 72 volt version of cxb 3590
Power it would HLG-185h-C1400
http://www.findchips.com/search/HLG-185h-C1400
Now there is a A version with built in dimming and B version that needs external 100k potentiometer. Look it up using the forum search to find difference between A and B.
 
robincnn

robincnn

Well-Known Member
$91 a piece for cxb3590 cd .Crazy

Yes you have 36 V version
With that driver you will get 36x 1.4 watts from each cob
So total 100 watts with both. little more since you not using full driver potential so it might give a bonus and go little over 1.4 amps. You can add a 3rd czb 3590 cob to get 150 watts
Since u have A version driver you can dim 50% - 100% intensity
 
robincnn

robincnn

Well-Known Member
CXB/CXA 3590 (Cree)
One of these is COB holder the other reflector holder
50-2303CR(Ideal Industries) 50-2300AN (Ideal Industries)
F13838_ANGELINA-XW (LEDIL) is reflector.
look in http://www.findchips.com/

Matt Kitski said:
Would it be running the 2 cobs too hard on that driver?
Click to expand...
Not at all. 1400ma is actually mid range as per RIU standard. Those cobs will be running at 56% efficiency on that driver.
upload_2015-11-18_22-58-36.png

upload_2015-11-18_23-1-5.png
 
disengaged

disengaged

Member
For the two 16 gauge wires used to vary current, most often with a potentiometer or 0-10V signal:
There is no statement on the spec sheet for the HLG drivers which indicates the current or wattage, only 0-10V. No one has mentioned their pots getting hot? That should mean there is very little current passing through. Just reading spec's on flame resistant resistors putting - 2W through one designed for 5W means an increase above ambient temperature of 100 Celsius. Just trying to be safe and working without any information. I didn't bother reading how much of an increase for lower valued resistors because if I don't now what I'm playing with I'm going to err on the side of caution.
 
S

speedyganga

Well-Known Member
Hi,
I was wondering if it would be possible to power led directly from a power bridge rectifier, such as this one.
Flickering will be at 1/(2x50) or 1/(2x60) depending on where you are, so impossible to detect for us...
if one has 220V AC it means he could get a 220x sqrt(2)=311 DC Voltage for cheap.
if one has 110V AC it means 155V DC.
Then we divide this number by Vled desired, and we place as much parralel string as needed.
For exemple, we could power 9 vero 29 with a current around 500mA, One could also add monos to fit the exact voltage... And from there, you add as much string as needed to get 150W, 300W, 450W etc etc. As long as it stay below the Amp rating for power bridge rectifier.

I don't think led would mind too much the flickering nor the voltage drive way instead of constant current.
Also I guess cappacitors would be too big for this kind of circuit...
I am just wondering if this woudn't be dangerous because of Plug voltage instability. We never really get 100V or 220V AC but something similar...

Tell me what do you think please :)
 
WwW1962

WwW1962

Well-Known Member
hello everyone, i have a lpc-60-1050 laying around and thought i would utilize it
how many 3070's can i run on it?
 
robincnn

robincnn

Well-Known Member
@WwW1962 Lpc-60-1050 is 9V to 48V
You can run only one 3070, or one 3590 36v or one vero 29
Your driver will have capacity left. You can connect 2 mono Starboard's in parallel to each other and then connect them in series with the COB. That way cob get 1 amp and the monos get 525ma each.
You can get blue and red star LED from rapid LED or steves LED. With simple switch you can enable those mono star when you want. Example
With 1x3070 3500kk/4000k you canconnect 2 or 4 or 6 monos of 630 and 660 and or blue
 
bggrass

bggrass

Well-Known Member
Last edited:
J

J-Icky

Well-Known Member
robincnn

robincnn

Well-Known Member
J-Icky said:
http://www.mouser.com/ProductDetail/Mean-Well/HLG-240H-C1400A/?qs=sGAEpiMZZMt5PRBMPTWcac5aDEswMPfp0olMHgJU1wV%2bbrT2oXKG4g==
Could I use this driver to run 6 vero 18 at 1.4amp. It says its rated for 179volt max and the veros would be 181.2. During veg I would dim it to 50%, but if I were to run it full open what would likely happen, would it just adjust the amps to meet the 179v or would it burn up the driver or cause problems with the cobs themsleves.
Click to expand...
i was looking at test report for HLG-240H-C1750. It is rated for 71V~143V but in test it came out to max 142V
http://www.meanwell.com/mw_search/HLG-240H-C/HLG-240H-C1750-rpt.pdf
Your setup will not burn the driver. Worst case scenario the current output will drop to bring voltage down to 179 volts. I assume between 1200ma-1400ma
 
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