Hey I had an odd question of using the TC420 to control Meanwell LDDs to control multiple fixtures.
So I have seen this, https://www.tc420.net/connecting-hig...-the-TC420.php
and I question something he states, and then doesn't go into detail about at all....
"This is very true. If you're using a power supply between 12 and 24 volts, you don't need to worry about this section. However, if you're using a power supply above 24 volts, something needs to be done so that the TC420 doesn't end up getting fried. There are 2 options that have been considered. The first is using a separate 12v power supply to power the TC420, however, you would need to join the negative connection the that of the 36v power supply to merge the 2 otherwise separate circuits. I don't like this solution, it's not very neat and you need another power supply. My preferred solution is to use a buck converter to reduce the power of the 36v power supply to 12v and power the TC420. This is a neat solution where you only have 1 circuit and power supply."
Well okay, but I dont like the idea of a buck converter :P. I dont like my Current Power Supply for my 2 fixtures on 1 tank, and want them to have separate fanless ones as well. On top of, soon having more tanks to hook up, and dont want a ton of tc420s all over the place.
So my question is this, "The first is using a separate 12v power supply to power the TC420, however, you would need to join the negative connection the that of the 36v power supply to merge the 2 otherwise separate circuits."
1. If you do this, how much power is applied over that line, so I plan to use 3.5mm 4 pole headphone cables to run my signals to the PWM modded TC420, I have 4 channels, but 2 of them are CW anyway, so I can drop that to 3 channels easy enough. Can I join their grounds, with one of those wires? It will likely be like a 24 or 26 wire. I know the storm does this, with small gauge wires, and this guy is making this sound hard, when its literally how all the pwm controllers work isn't it?
2. Can I do this with multiple power supplys.
I know this might sound like a stupid question, but I dont want to blow anything up, and my search for reassurance on google, is saying to make sure the negative leads that are tied can handle all of the output of both of the power supplies, but thats not how the storm works is it?