I apologize if the question is silly as this is my first project involving stepper motors and I'm confused about power supply specifications.
So I'm working on a project involving:
- 3 NEMA 17 Stepper motors with 4.2 kg-cm torque
- 3 A4988 drivers
Now the motor is rated for 3.2 V 1.2 Amps/phase. So, at 3.2 V the motors require 3.6 A of current in total which means a wattage of about 11.5 W.
So can I use any power supply which can deliver sufficient wattage or should the power supply be capable of delivering 3 Amps regardless of its voltage?
Is an 18V 2A supply sufficient or do I require a 12V 4A power supply?