HI All,
I'm trying to build out a stealth cabinet, thinking of perhaps commercializing it. My understanding is that if I can keep "lethal voltage) outside the cabinet then UL or other certification will be much easier. So, I'm trying to find a way to have the LED driver in a power brick/wall wart with then less than 40v going into the cabinet and powering the LEDs. Does anyone know of any products like this. The quantum boards with Mean Well drivers seem to come pretty close, but the voltage on low powered units seems to still be a bit too high at 49-55 volts. Any advice is appreciated
For sure, brother. You could just use 36v COB's like latest gen. Citizen CLU048-1212 or 1218. Bridgelux vero29d would also stay below 40v and can run with up to 100w. Or you take 24v strips like Samsung H-influx series(same LM301b like on QBv2). Simply connect them in parallel. You can also do strings from 3 or 5w diodes(Osram, Cree, Prolight Opto, ...); many ways leads to Rome...
Is 40v the limit for UL? 48v okay or already too much?
If you want exact these 40v you could add a few 3w diodes(purple, blue, red, deep- or far-red would make sense) to each strip or COB to fill the ends of the spectrum.
The problem with such a stealth cab is that you can't control what the users do. You can only recommend a certain voltage but a DIY'er like me would shit on the UL listing. A f.... box fan needs already 110/220v..
I don't thing the UL listing is really needed to create a valuable product. Als long as the skin is dry up to 60v is no problem and with sweat on your skin 40v can already get dangerous.