Introducing CobKits.com - specializing in DIY and Citizen COBs

CobKits

Well-Known Member

• Mar 13, 2018

• #3,581

sourgummy said:

hey cobkits, when will the luminus cxm 22's 3500k 90 cri return in stock. Looking to buy like 10.

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just put 60 up

 

ANC

Well-Known Member

• Mar 13, 2018

• #3,582

You can make that whole row disappear with some drywall.

 

madininagyal

Well-Known Member

• Mar 13, 2018

• #3,583

DesertHydro said:

SOG came down. 10 cxm22's at about 550w with a single hlg600
no veg time, straight from rooted to flower. veg plus bloom in coco
View attachment 4103917 View attachment 4103918 View attachment 4103919 View attachment 4103920 View attachment 4103921

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I like this setup, how do you feed them?? I got a nice space left because its too low to flower big plant but this setup is what i need

 

DesertHydro

Well-Known Member

• Mar 13, 2018

• #3,584

madininagyal said:

I like this setup, how do you feed them?? I got a nice space left because its too low to flower big plant but this setup is what i need

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hand water with a pump and a long hose to reach them. it was a pain in the ass. best to build a manifold and drippers

i started off ebb and flow but salt accumulation was burning them. you could do ebb and flow for ease but then do weekly flushes

 

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danthepluhmain

New Member

• Mar 19, 2018

• #3,585

hey can some one help me out i built 2 CLU058-1825 3500k but i cant find a mw driver that fund a 2,250ma for just two 50v cob chips

 

CobKits

Well-Known Member

• Mar 19, 2018

• #3,586

hlg185h-48A will give you 2.1A per chip on those
https://cobkits.com/product/meanwell-hlg-185h-48a-driver/

hlg240h-54B will give you about 2.25-2.3A
https://cobkits.com/product/meanwell-hlg-240h-54b-driver/

 

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danthepluhmain

New Member

• Mar 19, 2018

• #3,587

thank you will be ordering some time this week

 

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TurkishRambo

Member

• Mar 25, 2018

• #3,588

Hey! Was order some CXM22's and got question about drivers. I want power them: 2 COBs in serial on 1.4A. ELG-150-C1400A will be enough or i need HLG-185H-C1400A for 2 CXM22 on 1.4A ?

 

CobKits

Well-Known Member

• Mar 25, 2018

• #3,589

the chips are 52.5-53.5V at that current, so look at the datasheet for the driver

 

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TurkishRambo

Member

• Mar 25, 2018

• #3,590

Voltage is ok on both. Im not sure about watts: will it be enough to have 75w per COB on 1.4A(with 150w driver) or COBs will use more than 75w on 1.4A( so i need >150w driver)?

 

Last edited: Mar 25, 2018

CobKits

Well-Known Member

• Mar 25, 2018

• #3,591

1.4A x ~53V = ~74W

 

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TurkishRambo

Member

• Mar 25, 2018

• #3,592

Thanks.

 

CobKits

Well-Known Member

• Mar 25, 2018

• #3,593

its all about the current. voltage will follow the curve and theres your watts. the only reason it couldnt achieve a certain wattage is if voltage and current were limited

 

boilingoil

Well-Known Member

• Mar 25, 2018

• #3,594

Hey @CobKits can you give me a hand at figuring out the correct potentiometer for a 3.3 amp driver to dim down to around 2.8 amps?

 

CobKits

Well-Known Member

• Mar 25, 2018

• #3,595

dimming one meanwell driver at a time = 100k pot
2 drivers at a time 50k pot
3 drivers = 33k
etc.

 

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Dave455

Well-Known Member

• Mar 25, 2018

• #3,596

TurkishRambo said:

Hey! Was order some CXM22's and got question about drivers. I want power them: 2 COBs in serial on 1.4A. ELG-150-C1400A will be enough or i need HLG-185H-C1400A for 2 CXM22 on 1.4A ?

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Ledgardener.com driver selection tool !!

 

InTheValley

Well-Known Member

• Mar 25, 2018

• #3,597

my luminus are kickin butt, day 36 flip

 

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TurkishRambo

Member

• Mar 26, 2018

• #3,598

Got one more noob question: should i have any chip temp problems with this setup or it will work fine?

 

CobKits

Well-Known Member

• Mar 26, 2018

• #3,599

so the tube covers the heatsink to create a channel? the only thing i would consider is maybe little fans inside to blast air right over each chip.

 

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TurkishRambo

Member

• Mar 26, 2018

• #3,600

Looks like 500m3 fan blow air good thru mine 90cm cooltube. So my point was to use only main fan without any 12v fans. Tube should look like this but with plastic top part: