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Looks perfect to me, if you want to control the 3 drivers individual that is, else I would look into incorporating the 4 blue LED into the 2 other stings.

To get a better overview and to illustrate the valid voltage combinations that's possible when using more then on DC source in series. And as an example the use of a 10W LED constant current driver and PC PSU's to driver more then 1 LED with the same driver. But note the PC PSU use 14 watt at...

And I've just run some test on the 4 chip mounted on the black 1U alu tube, and to my surprise the box was not that good comparing to the cpu cooler with has a much larger surface area even if its more compact. Using screws from the computer screw box - with build in spacer. The center...

I just test shopped for water cooling equipment: -this is what I would require and is selecting the cheapest items possible. The price seams a little costly, but I guess it all depends on what your running now to keep cool, if your using electricity on a AC unit then then power saving will...

Another post that I've overlooked hmm. Those drivers looks like old transformer's and not switch mode power supply's as is most energy efficient, Good thing they got the hell out of there.

I had a look on the back side of my old 8800GTS graphics card and there can be placed a big chip on the big copper sink and perhaps some smaller chips on the 'Ram coolers'. it's a powerful but noisy heat pipe system, but it should be able to handle a lot of heat. I think I played Crysis 1...

Looks like closing the rollitup server works too :-)

Hi. When I looked into water cooling some weeks ago, I was discourage by the cost and small size of the cooling heads, the largest was for a PS3/Xbox but still it was to small and way to expensive. So I thought about using cast aluminum boxes filled with water like this: But when I thought...

My multimeter's temperature probe was not flat like the temperature display I use in my 120W LED grow light, so it would be difficult to mount that, and since I had one of them left over, I just use that, and I use the multimeter for current measuring anyway. Ambient room temp 26.2°C - 79.16°F...

I tried to make a prototype, it went quiet well, a little messy with aluminum drilling in the bed room but nothing a broom could not handle. Making a drill teacher - placing the holes the easy way Working on the floor on the backside of the bathroom mat. - Good thing it's not 6D...

Well the LED's are consuming 1050mA * 6.25V = 6.5W * 4 = 26W of electricity The LED's are ~75% efficient 26W * 0.75 = 19.6 watts of heat is dissipated to the sink. The cpu cooler is designed for a ~70 watt cpu, going to wiki LINK "the Pentium 4 2.8 GHz has 68.4 W typical thermal power and 85 W...

I'm not sure I want to see how that looked, if we are talking Humpers and Pampers, ;-) Anyway I'm envious on those big ass heat sinks, they cost a lot here, so I'm scanning my surroundings for anything usable: Some old CPU/GPU coolers would work nicely, what else do I got, a speaker with a...

Thanks ! Imagine my sadness when I had to kill the two males that was even bigger than the female. The remaining male is on the balcony where it is wondering what the hell happen to the nice sunshine and is stretching as hell, but is still producing a good amount of pollen, I have collected...

Looks like I've missed this post sorry. I've been waiting the last couple of days for 8 seedling to sprout and yesterday a very tiny and yellow seedling reached to surface, and alerting me to the all to wet soil, so I started digging for the rest of the sprouts and found them 1-2 inches down...

I wonder what medical LED condition I'm suffering from :-) THE SUN: A 10W 660nm LED seen through one of th binocular optics-cones. THE PYRAMIDS: A 10W 660nm LED and a binocular optics mirror/lens. THE LED ALTAR: Two AA LED flashlights flanks the test bench, what's missing is a spark of...

Hi I have received the 10W 660nm RED LED chips and have put one under the microscope and on the test bench. Emitted Color Red - Chip size 42mil Forward Voltage 6-6.6V Forward Current 1050mA Luminous Flux 500LM - Wave Length 655-660NM View Angle About 140 degree...

Hi. Revived the 5 PC power supply's today and is inspecting and is prepping one of them: Bonus: Mains cable X 5 Bonus: 50 x 17" cables. NO BONUS ! Takes 10 min. to remove and clean up all the labels. Side by side: PSUVo and the new case Nice the mains...

YES ! A driver that can drive ONE led(xx00mA) can drive 100 of these LED's in series with the help of other DC sources, for it's only the "top" voltage that needs to be adjusted and typically very few volts +/- Thinking about the design of CCdrivers, I would think that the operating voltage...

Shit ! that's some nice pictures and exciting project to look forward too. On the subject of nuts and bolts, I got a package in the mail today :p M3,4,5 I was playing with a cheap magnifying glass(1$ store) today, holding it over a led bulb, and watching the focus/coverage change...

What cheap LED bulbs can be used for: I tested the voltage range of the driver, with the help of my lab-psu: it's a 300mA 5-7W driver (max turned out not to be true under load !) Under load the driver is maxing out at 29.6 volt Getting help ! edit. So if one of the 330mA drivers...