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Unlike a regular motor that rotates continuously, a stepper motor rotates in steps, hence the name. Also unlike a regular motor that is powered by AC or DC voltage, a stepper motor is powered by a pulse that rotates the shaft a certain degree each time.
This stepper motor is a hybrid between a permanent magnet and variable reluctance. It has a 200 steps/revolution or 1.8 degree step angle. Each phase draws 280mA at 7.4V, allowing for a holding torque of 650g/cm (9oz/in). It has four color coded wires ending in bare leads to connect to the coils inside the motor. The black and green wires connect to one coil while the red and green wires connect to the other.
Stepper motors are used in applications that require precise movements and measurements. They are often used in printers, hard drives, and laser cutting machines.
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