Introducing CobKits.com - specializing in DIY and Citizen COBs

doz

Well-Known Member
So I can use watts to see how much light I getting, if I understand you?
And if I want amperage I must buy multimeter.
But if by calculations I get 260W (above quote), then obviously amperage is higher than 1.05A on DC side. Up to 1.25 or 1.28A as you said.
Again... Wall draw and actual output are 2 different things.

Take a multi-meter and test your actual COB chip. This will tell you what you are ACTUALLY outputting.
 

jonsnow399

Well-Known Member
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RandomHero8913

Well-Known Member

RandomHero8913

Well-Known Member
Thanks.

Most of that data is foreign to me. The only things I can understand are the voltage, current, and color temp.

When comparing led chips like these, what values in the specs should I be looking at to give me info about which is a better performing product?
I know @CobKits ran some tests on all these different COBs and graphed up the results. I'm not sure where they've gone to, maybe he has them handy.
 

CobKits

Well-Known Member
yeah i have tests on those. not at the shop now, bump me if i forget.

bottom line is they are less efficient than the more expensive chips, but at that price you can use more and get better more uniform coverage. i should prob run a test with them to determine how many match a QB in efficiency, probably 5 (as opposed to (4) 1212 gen6)
 

batrgrower

Well-Known Member
I would love to see those results.

My idea is to run two 48" light rails each with 5 of those citizen cobs to cover an area that's 50"x30".

Do you think that would be good coverage?
 

CobKits

Well-Known Member
I would love to see those results.

My idea is to run two 48" light rails each with 5 of those citizen cobs to cover an area that's 50"x30".
Do you think that would be good coverage?
yeah that would be one cob per square foot and would be a good match for the 1212s as they have pretty good performance at about the 35W/chip youre looking at.
 
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