sunil21
Advanced Member level 4

when we drive an led with a 5v supply we calculate the current limiting resistor for an LED with specs like LED drop is 2v, current 20ma. so we calculate the series resistance - (5-2)/.020 =150ohms.
I read the above in a tutorial.
But in the case of a stepper motor running on 12v which is supposed to consume 1 amp (as per specs) I am supplying it with 12v 2amp PS, how am I supposed to calculate the series resistor for limiting current to 1amp?
I read the above in a tutorial.
But in the case of a stepper motor running on 12v which is supposed to consume 1 amp (as per specs) I am supplying it with 12v 2amp PS, how am I supposed to calculate the series resistor for limiting current to 1amp?