abasir,
Thanks, I understand the math now. One thing I am still unsure on though.
I read somewhere that steppers perform better at a higher voltage than that which they are rated at, and that they can be run up to around 10* their voltage rating. (10* may be incorrect, I can't remember the exact number).
However, the current must be limited to prevent damage to the motor.
In your last post you state:
"and voltage drop across motor is V=IR=1.11A*4.0ohm=4.44V"
does this mean that the motor is still running from 4.44V and not 12V. If so, I may as well just run them at the rated 5V and not worry about current limiting.
Maybe I have missunderstood the article I read a while back.
Thanks for the help. I know more today than I did yesterday, so at least I have made some progress. |