ABs have built-in pot and dim output. If nothing is on the dim output then it's just 100% unless you use the internal pot. B with dim output is 100% if nothing is connected to dim signal.
Just because you don't know how to use these drivers doesn't mean they are bad. They offer multiple options depending on what you want to do. And ldds are still a terrible choice for a large number of high voltage cobs and will always be.
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I know how to use them and their ilk. Got a bunch in the basement...
spec sheet doesn't list Null =100%
I have some AC/DC Meanwell drivers that do not light unless you have a dim signal.
I just wired a 9V batt. to test them.
Last straw was when I designed a light but got "flash" (as the drivers dumped their capacitors) on some early COB's
A situation I never had w/ LDD's
AB's weren't available when I started.
It is a NICE thing and wouldn't uby any other type IF I'd ever buy one again..
Ldd's are practically thoughtless.. No need to match current, measure mA and voltage ect. Plug and play..
10V analog industry standard is err not user friendly if one goes w/ popular controllers such as the Blue fish, any Aduino based unit, Typhon, Hurricane, Storm, Storm X
Reef pi, Robotank, and Ferduino.
Best you got is expensive Apex..
Need to switch the driver off and it generally doesn't "dim to zero"
For instance, the digital signaling from a Dali control system cannot always be translated by the driver into the appropriate lighting state thatís required. Beyond a certain level of dimming, the LEDs may simply switch off. But be pragmatic; if youíre only looking for dimming down to 50 per cent thereís no need to search for a driver that will take the lighting down to 5 per cent.
We just have to agree to disagree on this point.. I'd gladly take the extra "space" of LDD's over an all in one w/ crippled dimming and bad protocols..
I did say before that adding a 10V conversion board to switch 5(3.3) PWM to 10v analog isn't difficult but more parts, more places for beginners to err..ect.
PERSONAL Balance sheet.. LDD's win "almost" every time. COB's or light heads requiring over 2A may be the only exception........
2.6x .7" dual driver and mA adj,, What's not to love?
9.1 sq inches of space to run 10 COB's..
7.8 linear inches to run 6 cobs.. Pretty sure one could find heat sink room.