Hi, I'm getting lost on what I'm doing. I just built another cnc laser cutter but instead of using several power adapters for the laser, motors, shield, etc, I want to use one power supply/adapter. I have some options (24V, 36V and also one from an old printer providing 32V and 16V). I need to feed:
Basically while not perfect, I'm thinking on using 4 LM317 to regulate the voltage into 4 outputs: 7,5V, 7,5V, 12V and 12V. Then the laser drivers take care of the rest with their own LM317. I know it's not perfect but I have too many power adapters and I plan to use some instead of buying more stuff. I know each LM317 will take a bit of power doing it's job but it's ok. My best pick is one HP power adapter with two outputs: 32V at 940ma and 16V at 625ma.
I will appreciate any light. Tried writing my attempts and more details but it appeared confusing at the end. Thanks in advance.
- Laser driver #1. It has it's own current regulator (LM317) for safety, lasers die otherwise. Each of the two already calibrated and with it's own heat sink. I just need to provide 7.5V.
- Laser driver #2. Same as #1. Just need to provide 7.5V.
- GRBL Shield (Arduino), I need to provide 12V at 500mah (will also work with 9V)
- Cooling fans. 3 of them, 12V each rated 0.09A
Basically while not perfect, I'm thinking on using 4 LM317 to regulate the voltage into 4 outputs: 7,5V, 7,5V, 12V and 12V. Then the laser drivers take care of the rest with their own LM317. I know it's not perfect but I have too many power adapters and I plan to use some instead of buying more stuff. I know each LM317 will take a bit of power doing it's job but it's ok. My best pick is one HP power adapter with two outputs: 32V at 940ma and 16V at 625ma.
I will appreciate any light. Tried writing my attempts and more details but it appeared confusing at the end. Thanks in advance.