cogitech
Well-Known Member
Hey folks!
Planning a COB build with 5 Citizen CLU048-1212C4 3500k 90CRI. Going to be driving them parallel off a HLG-185H-36A, so they will be getting right around the ideal 1080mA at ~36 volts. Currently no plan for reflectors/lenses (but I do have one idea about this bouncing around in my head).
This is for a 20" x 36" tent, and I am wondering what my layout options are.
For simplicity, I am tempted to just put all 5 COBs in a straight row across the long dimension, centered over the short dimension.
It has occurred to me that a different configuration might offer better light distribution. The most obvious choice would be a rectangular configuration with one COB on each corner and one in the center.
With this number of COBs in a 20" x 36" space, does it even matter all that much? I don't really plan on having any more than 4 plants in the tent at any given time. Typically only 2 or 3.
Note: The reason why the "straight line" approach appeals to me is because I got my hands on a huge piece of copper bus bar (1/4" thick x 3.5" wide x 2.5 feet long) and I'd love to use it as a combination "frame" and heat spreader. COBs would be mounted directly to this huge chunk of copper bus bar, and then a couple (or three) good quality heat sinks mounted on top of the copper bus bar. Thermal compound at all interfaces, of course. Bus bar might even be 3/8" thick. Will have to double-check.
Opinions?
Planning a COB build with 5 Citizen CLU048-1212C4 3500k 90CRI. Going to be driving them parallel off a HLG-185H-36A, so they will be getting right around the ideal 1080mA at ~36 volts. Currently no plan for reflectors/lenses (but I do have one idea about this bouncing around in my head).
This is for a 20" x 36" tent, and I am wondering what my layout options are.
For simplicity, I am tempted to just put all 5 COBs in a straight row across the long dimension, centered over the short dimension.
It has occurred to me that a different configuration might offer better light distribution. The most obvious choice would be a rectangular configuration with one COB on each corner and one in the center.
With this number of COBs in a 20" x 36" space, does it even matter all that much? I don't really plan on having any more than 4 plants in the tent at any given time. Typically only 2 or 3.
Note: The reason why the "straight line" approach appeals to me is because I got my hands on a huge piece of copper bus bar (1/4" thick x 3.5" wide x 2.5 feet long) and I'd love to use it as a combination "frame" and heat spreader. COBs would be mounted directly to this huge chunk of copper bus bar, and then a couple (or three) good quality heat sinks mounted on top of the copper bus bar. Thermal compound at all interfaces, of course. Bus bar might even be 3/8" thick. Will have to double-check.
Opinions?
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