Canadain Closet Gardener
Well-Known Member
Is this parallel wired?
33 strips
Cheers
CCG
33 strips
CheersCCG
DiY LEDs - How to Power Them
- Thread starter SupraSPL
- Start date
GBAUTO
Well-Known Member
Based on what I think your diagram shows I'd say it looks correct.
Canadain Closet Gardener
Well-Known Member
bizfactory
Well-Known Member
Anyone tried running 3x Vero 29 B (52v) on a HLG-240H-C1750? The driver has a max output of 146V but 52v * 3 = 156v needed for the cobs. I know the meanwells usually will run 10% higher than rated but not sure if that is more current or voltage or both. Anyone tried it?
mahiluana
Well-Known Member
I never worked with this driver, but i guess and estimate, that you are hard on the edge...specially with a cold start in the (winter)morning, you risk to see your leds blinking...and your driver is not able to build up enough voltage to drive through 1,75A -normaly it helps to dimm down the current a bit, but...
i would feel safer with HLG-240H-C1400 --- or eg. a combination of 2VeroB + 1VeroD
To pull out the max. of a driver you need to bring Vf of your design close to the max. of open circuit voltage. (your drivers over voltage protection = 150-165V)
The last time i did was with ELG-240H-C1400A / DC 86-171V
in little 3V steps i pushed Vf to a max. of 179V @ 1400mA adding 3W chips to the design.
my powermeter showed 270W (-20W for the driver) = 250W max. on the wall
Mean Well datasheet for this driver shows 239,4W rated power ---> only 4,4% more watts increasing the voltage close to the max. @ stable current.
@ 25° chip temp. you will need 3 x 1750mA * ~51,8V = ~272W
and your driver is rated 250,25W +/- ?%
H
ope this helps to make a good decisionrecklesscognition
New Member
Been reading for days and am getting closer to a purchase but every day I read a new thread I get a different idea. Hoping someone could lend a hand.
I'm building a kit for a 7 square foot room, 1-2 plants, thinking of 4 or 5 CXBs 3500ks on a HLG-240H-C1400A. Is that enough light? Was looking into CXM22s or the Vero 29bs too but they're 50v I think. Can I power 4 or 5 of them with the HLG-240H-C1400A, or do I need to go bigger or do only 4 cobs? I just want to do passive cooling. Thanks for any advice.
I'm building a kit for a 7 square foot room, 1-2 plants, thinking of 4 or 5 CXBs 3500ks on a HLG-240H-C1400A. Is that enough light? Was looking into CXM22s or the Vero 29bs too but they're 50v I think. Can I power 4 or 5 of them with the HLG-240H-C1400A, or do I need to go bigger or do only 4 cobs? I just want to do passive cooling. Thanks for any advice.
Delta-9Pyromaniac
Well-Known Member
Had this sitting in the back of my closet collecting dust. China led. How many Citizen CLU048-1212 90CRI can I power with these? 
mahiluana
Well-Known Member
2 or 3 in a row --- if you want higher efficiency
wire as many rows in parallel as you like
Delta-9Pyromaniac
Well-Known Member
The China light came with three of those, and only have four COBs. Is that over kill on the COBs?
mahiluana
Well-Known Member
three of what ? --- do you mean 3 of those^ drivers for 4 x CLU048-1212 ???
then you should use only 2 drivers to drive 2 x 2CLU048 in series.
have a look to the datasheet - and you see, that your 4 chips will drive out a total
~ 65W @ 500mA (<20% of max current) very good efficiency and no risk at all.
but never connect a single chip CLU048 to that driver
Delta-9Pyromaniac
Well-Known Member
thanks for answering all my noob questions. So I've got four CLU048's, the two drivers out of three, and a small pc fan. also, the china light came with a smaller driver to power the fan. would you be able to show me how to hook this all together??? a diagram maybe, if possible.
u risk and electrocut your lifeHi guys, any advice for a good single driver setup with only one Vero 29 Gen 7 (BXRC-30E10K0-C-73)?
Is there a driver that can power it @1050mA, ~70W?
Many thanks in advance!
Is there a driver that can power it @1050mA, ~70W?
Many thanks in advance!
mahiluana
Well-Known Member
mahiluana
Well-Known Member
you can drive 5 x CXBs 3590 without problems @ ~175V / 1400mA / ~180lm/w
very efficient combination - total 245W = 35W/sqf > enough light.
if you dimm down to 700mA you can reach up to 220lm/w (depends on bin of your chip)
watch your heatsink(s) and try to keep it below 40°C
@ full load you have to sink ~170W heat power
Hi
could you explain it betetr, i know it's an old post but I'm just curious.
Of course you're speaking about a CV driver, sin't it?
i miss this part " Then keep it like that and connect 2nd cob. Verify current is 2.1+2.1. Use the other current control internal potentiometer to adjust current to control intensity." How could I make this using a single driver to pilot two cobs and driver has only one pot(esternal in this MW-A series)?
Thank you so much!
ganjafather27
Well-Known Member
Hey guys, im wondering if anybody can spread a little knowledge my way.
I'd like to make a single 36v cob unit. What driver(s) would be the best for a single cob build?
I'd like to make a single 36v cob unit. What driver(s) would be the best for a single cob build?
tekmunki
Active Member
The newer HBG Meanwells would be great for a single cob, you don't really get the flexibility of expanding the system out later like with the HLG's cause the form factor lends itself to being attached to one cob at a time. HBG-100-48A is dimmable up to 2 amps and can put out a forward voltage between 28-48v so they pair nicely with 36v cobs. You can even screw in an eye hook to the top of the driver to hang it. It's not the cheapest option being around $40 but if you're looking for something you can just mount the cob and heatsink to and still look good without wires everywhere it's an option.
