I'm new to this cnc game. I've got NEMA 23 stepper motors and a driver circuit using L298 IC. I understand the driver is 2 phase and I can wire the motors to emulate 2 phase. Is there such a thing as a 4 phase driver. What is the advantage of 4 phase? Also need to build a circuit for a 36v power supply for the motor voltage. Does it need to be regulated? If so can someone help with a circuit for 230vac supply?