Series or parallel connection?

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Dakdak

Member
I would like to make a light for 4*2 area, i've bought the COB and passive heatsinks and holders. Clu048-1212 10pcs and 40wattage pin heatsinks.

-The first thought I had was buying a hlg-320-c700 and running 10 in series, but after some more reading i've figured it might not be good to start out with such high voltage.
-As alternatives ive been looking at hlg-320H-36 for constant voltage, and parrallel ofc.
-And last the cheapy Chinese, one driver for each COB.


Power watts per sq.ft
320 wattage / 8 = 40 wattage, ppfd around: 900 // sounds right?
Sorry about my english, it isn't my native language. I'm skilled as metalworker / welder and i've soldered quite some times.
Best regards Dakdak
 
CobKits

CobKits

Well-Known Member
Dakdak said:
-The first thought I had was buying a hlg-320-c700 and running 10 in series, but after some more reading i've figured it might not be good to start out with such high voltage.
Click to expand...
correct, the 428V is out of range of any holder, youd need to solder the chips at that voltage

Dakdak said:
-As alternatives ive been looking at hlg-320H-36 for constant voltage, and parrallel ofc.
Click to expand...
the 36B has a hard limit of 36.0V, but at 700 mA, the 1212 are about 34V. so you could use either a 36A or 36B successfully

Dakdak said:
-And last the cheapy Chinese, one driver for each COB.
Click to expand...
not nearly as efficient, use the meanwell. much better investment

Dakdak said:
Power watts per sq.ft
320 wattage / 8 = 40 wattage, ppfd around: 900 // sounds right?
Click to expand...
sounds about right, should work well
 
T

ThaiBaby1

Well-Known Member
CobKits said:
correct, the 428V is out of range of any holder, youd need to solder the chips at that voltage


the 36B has a hard limit of 36.0V, but at 700 mA, the 1212 are about 34V. so you could use either a 36A or 36B successfully


not nearly as efficient, use the meanwell. much better investment


sounds about right, should work well
Click to expand...
Hey Cobby,
How do I wire a mw 48 volt driver to run 24 volt strips.?
 
D

Dakdak

Member
CobKits said:
correct, the 428V is out of range of any holder, youd need to solder the chips at that voltage


the 36B has a hard limit of 36.0V, but at 700 mA, the 1212 are about 34V. so you could use either a 36A or 36B successfully


not nearly as efficient, use the meanwell. much better investment


sounds about right, should work well
Click to expand...
Whats the best practical way of wiring 10 cobs in parallel? Ive seen many use wago connectors, but the ones i can find only has 5 wire block terminals, any alternatives?.
Whats the difference between A and B version when we talk about constant voltage power supply? using 10 cobs would give them around 900ma, so should i just stick with version B?

Thanks for the advices
 
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