步进电机 

A stepper 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 feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application in respect to torque and speed. Stepper Motors are in stock at Tenco Electronics. Tenco offers inventory, pricing, & datasheets for Stepper Motors. Stepper motors are DC motors that move in discrete steps. To know more, please view our large section of Stepper Motors below.