fair enough.I'm not sure how MrFlux has his hooked up exactly (parallel?) but you can use a driver like the Meanwell HLG-185H-Cxxxx which would allow you to hook up 4-7 cxa3070's at 700mA or 3-5@1050mA in series. When using a driver like this you are introducing high voltage (up to 286v@700mA) into your system which could be dangerous and even fatal to anyone not educated in how to work with it. On the other hand using 1 low voltage driver per cob is much safer as our skin can resist electricity to a certain point.
Positivity uses the high voltage inventronics divers to power his cobs with some reds in series i believe.
So though it might look nicer with less drivers, I'm not sure I could recommend the average DIY hobbyist do this. You are not going to kill yourself if you mess something up with low voltage.
yeah I like those bars that flux has.Hi guys, I'm just in the early stage of spec'ing out whether I want to bother with a DIY build. I think the one-one ratio is probably easier/safer. BUT, it would be nice if there were a power supply that could handle say 4x 3070/50W COB's safely, just neater and easier imo. I'm thinking something like the Meanwell HBG-240-48, or HBG-240-60 could handle 4x50W 3070's well, and safely. Other than the voltage warning, any reason this would not be a good idea?
I'm not sure you can use those drivers as they are not constant current. You need to add up the voltage of all the cobs in your string and get a driver that can handle that amount voltage. cxa30** have a typical voltage of 37v so 4x37=148v.I'm thinking something like the MeanwellHBG-240-48, or HBG-240-60 could handle 4x50W 3070's well, and safely. Other than the voltage warning, any reason this would not be a good idea?
To be honest I don't really understand how MrFlux has his lights hooked up, it confuses me as i am new to this. I'm not sure how he is able to run 5 stings of 5 vero10's on 1 driver, 25 cobs total. The vero10 have a typical Vf of 26.7v, so 25x26.7v = 667.5v and the driver he is using is only capable of 143v@1400mA. I know it has something to do with the whole parallel string thing, im going to have to do more reading.
I'm not sure you can use those drivers as they are not constant current. You need to add up the voltage of all the cobs in your string and get a driver that can handle that amount voltage. cxa30** have a typical voltage of 37v so 4x37=148v.
The HLG-185H-C1400 can handle 3 3070's at 1.4mA. The HBG-240-48 and HBG-240-60 are 48v and 60v drivers, if there is a way to hook these up I don't know how to do it and would like to learn.
Great metonymy. The challenging thing there is the fact that more water flows through the valve, the more it opens.Thing of it like splitting a pipe , running the 2 new pipes in parallel with 1 way valves in them. You can be sure the flow of the 2 pipes combined is equal to the flow of the original pipe, but the valves must have equal resistance or more water take the easier path. In this situation, it's somewhat challenging to balance the flow between the 2 valves.
If you instead put the 1 way valves in series, the problem is a lot simpler. You know the flow throughout the pipe is the same, so the flow through the 2 valves will be the same. Since we're using constant flow pumps rather than constant pressure pumps, it shouldn't matter how much pressure each valve drops. The pump will increase or decrease its pressure to ensure a constant flow.