Randomblame
Well-Known Member
Sorry, thats nonsense!@ CoB_nUt
I have it in 5.5" spacing between the lights, but I will double check tomorrow.
There was enough room to leave 1/4 inch between the drivers for a small air gap.
The A dimmers don't work at all like the B drivers, its not just the dimming. There's a safety thing involved, but I can't remember now. Don't use the A-type drivers. Buy a $3 pot and wire it in, its very easy.
Here's a video (linked) on how to wire a pot.
A version will just work as well as B version and in fact you get more watts out of the A version drivers.
There is only a risk if you use the CV/CC version but an oversized driver. An HLG-480H-54A would be dangerous for a single QB96. So when you use for instance two QB96 in parallel and one boards fails the other boards could fail too. But therefor these drivers have the voltage regulator. Simply cap/limit the voltage at 54,3v and the max. current will stay in a save range even with only one board. There is also no risk for thermal runaways when you limit the maximum voltage.
Remember, voltage limits current flow and vice versa. When the voltage is limited to 54,3v you can ramp up the current regulator to the max. and nothing would happen. The boards would still work with 54,3v and the according current also if much more current is available from the driver.
So in reality A versions offer a few more watts like B version drivers and CV/CC series driver have more watts like CC drivers. HLG-240H-C1400A has ~260w and an HLG-240H-54A can easily go as high as 285w watts and more. That depends on the boards you use and on the circuit design. QB96's 54v fits very well to max out an HLG-240 because you can set the voltage to 55 or 56v to allow maximum current flow.
@Or_Gro
Have not you tested the maximum output one can get with an HLG-240H-54A? Not 100% sure but I remember someone said something of around +300w with a single QB96..