Comparison of Torque Due to Differences in Stepping Motor Drive 

We drive the same stepping motor (PF35-48) with four different drive method
and see what happen to individual motors .
・Unipolar constant voltage drive
・Unipolar constant current drive
・Bipolar constant voltage drive
・Bipolar constant current drive
Comparison result
・The bipolar drive provides more torque at low speed compared to unipolar drive.
・Constant current drive provides more torque at high speeds compared to constant voltage drive.
Please see below page for reference
Nippon Pulse Motor stepping motor lineup
www.pulsemotor...