I have heard that if I am to get a power supply to drive my motors or motors and board, the current that the power supply is rated at can be a lot more than what the motors and board draw (therefore they won't be heavily loaded).
my question is can the voltage that the power supply is rated at be a lot more than what each motor or motors and board (if I was to use a common PS for both) are rated at?
Thanks for any information on this question or general comments on PS's
It is common practice to run STEPPERS at a voltage higher than rated.
However if you are running servos, then you don't want to exceed the voltage on the servo motors by much if any volts (it will make magic smoke). Also, you must NOT exceed the voltage rating of your driver(s) in any case.
I am not sure what your are refering to when you say the board, but here I will assume breakout board or other perifieral equipment. DO NOT exceed the rated voltage here either. It it is rated at say 12V, the usual tolerance is +/- .5V
Check your manufacturers specs for their ratings.
AKA Country Bubba (Older Than Dirt)