Stepper motor driving STMicroelectronics
current in the stator winding changes For a motor with one pole pair on the rotor this corresponds to 4 steps per electrical cycle Figure 3 shows the step sequence and idealized current waveform for a two phase bipolar stepper motor In Figure 3 each time the current in one of the windings is reversed the motor makes one step of 90° Of course no stepper motors would want to use such a