# Using 48V 25A AC/DC power supply to power multiple components?

I was basically wondering if I may be able to control a NEMA 34 stepper (6.2A rated), Arduino Mega, and a linear actuator with just this single power supply (48V, 25A)? The NEMA 34 stepper would max draw around 12.4A if both coils run so I was thinking that I could probably just run the rest of the components with the remaining V- and V+ pins on the power supply since there is probably 12A left to be used, which is more than enough since both the Arduino and linear actuator when being powered never went more than 1A.

Now I was thinking of using separate voltage divider configurations for both the Arduino and the linear actuator to be able to power them separately. I included a diagram below to better explain what I mean. Am I going about this the right way? I am thinking too that I would probably need to find resistors with a high power rating just because 48V is a lot and I read that the resistor could potentially burn if it is not specified to be able to handle that load.

NOTE: I'm basically just trying to make this more compact with what I have at hand. My dad has a ton of resistors (some really large and small in size) and I have some buck step down converters that can handle up to 30V. My initial idea was powering the linear actuator with a 9V battery and the Arduino Mega with another 9V battery but thats probably not the most efficient way although its an easy way.

• You need DC/DC convertors, not voltage dividers. A voltage divider will not provide a stable voltage. I'm not a qualified electrical engineer, but those very different voltage and current requirements seem to justify three different supplies connected to the AC. Commented Jul 23 at 16:56
• 1 KW should be enough for a pretty dynamic drive. You don't disclose much about the "12 V linear actuator". As your 30 V buck converters don't seem useful, I'd look for an additional converter AC to 12 V DC (seems to be in range for Arduino buck converter). Commented Jul 23 at 16:59