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A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any position sensor for feedback (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed.

<link http: p408417.mittwaldserver.info typo3 null external-link-new-window internen link im aktuellen>Quelle: https://en.wikipedia.org/wiki/Stepper_motor