http://www.ledsupply.com/blog/#article/651
Check this out Jupiter. It helps explain a lot of things about LEDs and driving them
Check this out Jupiter. It helps explain a lot of things about LEDs and driving them
Lighting KIND K3 DIY Retro Build
- Thread starter Jupiter
- Start date
these are just a way to attach the heatsinks or cobs themselves to make a light. A lot of people are converting old lights and not saving much from them but the case. So instead of converting this company could be an option. Can you get the passive pin heat sinks in Eu? That are excellent and don't require any additional wiring. The only other thing would be to try an get heatsink extrusion and cool it with fans.
Oh, so it's just a frame. That can be 80/20 extrusion profile also.
Ahhh... I still didn't get passive heatsinks here (I need 4, already have 2 CXB on active and run little harder). I guess it's still better option to get long aluminium heatsink and 1-2 big 14cm fans on it. Less wiring than 6x Arctic alpine.
Right now I have 2 CXB 3590 on Arctic alpine 11+ (active), 1800mA or around 64 W. When my 250W HPS die, I will upgrade with 4 more CXB, so total 6.
Ahhh... I still didn't get passive heatsinks here (I need 4, already have 2 CXB on active and run little harder). I guess it's still better option to get long aluminium heatsink and 1-2 big 14cm fans on it. Less wiring than 6x Arctic alpine.
Right now I have 2 CXB 3590 on Arctic alpine 11+ (active), 1800mA or around 64 W. When my 250W HPS die, I will upgrade with 4 more CXB, so total 6.
Yes just a box basically. Easy and clean way to make lights like the ones you can purchase completed. Sorry I know EU is very limited but you can't buy the pins there? I don't really see any other options besides active fan cooling unfortunately. Especially running them that hard.
The common driver used is from Meanwell. they are a top quality driver. The HLG model, C series are what we most commonly chose with cobs.
Here's how to know what driver to choose, based on what amperage you wish to run them at. Here is a chart with specs for the HLG-240H-C series
the 240 in the HLG-240H is the total watt output. the Cis followed by the constant current output to each cob. below that you see the minimum and maximum voltage to drive the cob with. This tells you how many cobs you can run from one driver.
Example: HLG-240H-C1400 can give a maximum of 179 volts. the minimum number of cobs would be 2, 36V rated cobs the max would be 5..but..
at this point you need to know how much voltage your cob choice really uses at X voltage. your 36V cob's actual V range will be something like 34.2 to 36.6. The range is call the Vf or forward voltage. Vf is the actual voltage across the chip. It depends on how much current your driver provides, voltage rises as amperage rises in the cob. at the 1400ma our imaginary 36V cob uses exactly 36V you can run 5, the driver has a little wiggle room. But if it was using 36.6 volts, now we are at 183V total. Your driver MIGHT run them, but now you are seriously over driving the driver.
People do it, but IMO, you shouldn't.
Most suppliers have data sheet for the cobs, drivers, etc. download them for your choice of cob and drivers. It gives you the information needed to choose correctly.
So in simple terms, multiple your cob's Vf x amperage = watts per cob x# of cobs = total draw watts
Here's how to know what driver to choose, based on what amperage you wish to run them at. Here is a chart with specs for the HLG-240H-C series
the 240 in the HLG-240H is the total watt output. the Cis followed by the constant current output to each cob. below that you see the minimum and maximum voltage to drive the cob with. This tells you how many cobs you can run from one driver.
Example: HLG-240H-C1400 can give a maximum of 179 volts. the minimum number of cobs would be 2, 36V rated cobs the max would be 5..but..
at this point you need to know how much voltage your cob choice really uses at X voltage. your 36V cob's actual V range will be something like 34.2 to 36.6. The range is call the Vf or forward voltage. Vf is the actual voltage across the chip. It depends on how much current your driver provides, voltage rises as amperage rises in the cob. at the 1400ma our imaginary 36V cob uses exactly 36V you can run 5, the driver has a little wiggle room. But if it was using 36.6 volts, now we are at 183V total. Your driver MIGHT run them, but now you are seriously over driving the driver.
People do it, but IMO, you shouldn't.
Most suppliers have data sheet for the cobs, drivers, etc. download them for your choice of cob and drivers. It gives you the information needed to choose correctly.
So in simple terms, multiple your cob's Vf x amperage = watts per cob x# of cobs = total draw watts
I'm driven by curiosity. I want to learn EVERYTHING and I'm pissed at God because he won't let me....................lol!
Jupiter
Passion takes you where hard work can't.
So my driver has a dim option. If I don't use it do I have to tie them together or just cap the ends
Just cap it if your not adding a dimmer in
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