I have been building an 12"X18" LED array consisting of
12 - 10W 10,000K 9-11 FV 1000ma (2 X 6 series strings)
24 - 3W Blue 450-465nm 4FV 750ma (6 X 4 series strings)
12 - 1w RED 2.2FV 350ma (6 X 2 series strings)
12 - 1w Violet 405-415nm 3.8FV 350ma (6 X 2 series strings)
I built a couple of different drivers so far testing for efficiency and this one seems to be the best I can come up with. I am using a 500W power supply SMC500PS24-CI which has about an 80% efficiency rating. I've only tested the 10 watt'rs with this driver because they draw the most power for this array. My power supply draw is around 153W measured on my killowatt meter and I am getting about 9,363 LUX at 16" from the 12"X18" array. The 10 watt'rs are currently at 10.5V 880ma and are looking good. I just think I can get a little more efficiency out of it but I want to keep cost down so I don't want to spend a ton of money just trying to save a couple of watts.
So far I can build this for under 35$ with the current parts and a 2 layer PCB but if I can spend a little more to make it more efficient that would be great. I was thinking maybe a simple switcher or a buck regulator and I would rather not purchase a chip to do it if I can. If anyone give me advice that would be great.
Also I currently have the power supply set at 25.4 volts to accommodate all the series strings of LED's.
Thanks in advance.
Nick
12 - 10W 10,000K 9-11 FV 1000ma (2 X 6 series strings)
24 - 3W Blue 450-465nm 4FV 750ma (6 X 4 series strings)
12 - 1w RED 2.2FV 350ma (6 X 2 series strings)
12 - 1w Violet 405-415nm 3.8FV 350ma (6 X 2 series strings)
I built a couple of different drivers so far testing for efficiency and this one seems to be the best I can come up with. I am using a 500W power supply SMC500PS24-CI which has about an 80% efficiency rating. I've only tested the 10 watt'rs with this driver because they draw the most power for this array. My power supply draw is around 153W measured on my killowatt meter and I am getting about 9,363 LUX at 16" from the 12"X18" array. The 10 watt'rs are currently at 10.5V 880ma and are looking good. I just think I can get a little more efficiency out of it but I want to keep cost down so I don't want to spend a ton of money just trying to save a couple of watts.
So far I can build this for under 35$ with the current parts and a 2 layer PCB but if I can spend a little more to make it more efficient that would be great. I was thinking maybe a simple switcher or a buck regulator and I would rather not purchase a chip to do it if I can. If anyone give me advice that would be great.
Also I currently have the power supply set at 25.4 volts to accommodate all the series strings of LED's.
Thanks in advance.
Nick