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0
Step Angle(°)
0.9
1.8
Bipolar/Unipolar
Bipolar
Bipolar/Unipolar
Holding Torque (Ncm)
-
Holding Torque (oz.in)
-
Rated Current (A)
-
Shaft Type
D-Cut
Single Shaft/Dual Shaft
Single Shaft
Shaft Diameter(mm)
4
No. of Lead
4

Bipolar Stepper Motor

A bipolar stepper motor for sale has one winding per stator phase. A two phase bipolar stepper motor will have 4 leads. In a bipolar stepper we don’t have a common lead like in a uni-polar stepper motor. Hence, there is no natural reversal of current direction through the winding.

A bipolar stepper motor has easy wiring arrangement but its operation is little complex. In order to drive a bipolar stepper, we need a driver IC with an internal H bridge circuit. This is because, in order to reverse the polarity of stator poles, the current needs to be reversed. This can only be done through a H bridge.

Bipolar stepper motors are a little complex to wire as we have to use a current reversing H bridge driver IC like an L293D. But the advantage is that the current will flow through the full coil. The resulting torque generated by the motor is larger as compared to a uni-polar motor.

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Bipolar Stepper Motor Comment