As an example of a basic form you got a unipolar coil design with a permanent magnetic (PM) core, such as the very common 28BYJ-48. This stepper motor features 8 ‘teeth’ on the stator ...

The [Denki Otaku] YouTube channel took a look recently at some stepper motors, or ‘stepping motors’ as they’re called in Japanese. Using a 2-phase stepper motor as an example, the stepper ...