I'm building a project using a DC geared motor that i purchased from here
https://www.servocity.com/html/robotzone_gear_motors.html
I need to know what would be the specs of the power supply that can be used with this motor. how much AMP should i choose ? . There are either a 2 AMP 60W power supply or 3.2 AMP 60W power supplies (220 VAC -> 12 VDC) and there are of course power supplies with higher AMPS and higher watts. What is the rule on which i should make a choice ? .