![]() ![]() Since there are five phases, A through E, the motor is called a "5-phase stepper motor." The opposing pair of poles constitutes one phase. (Running a current through a given winding magnetizes the opposing pair of poles in the same polarity, i.e., north or south.) Each winding is connected to the winding of the opposite pole so that both poles are magnetized in the same polarity when current is sent through the pair of windings. The stator has ten magnetic poles with small teeth, each pole being provided with a winding. The rotor is magnetized in the axial direction so that, for example, if rotor 1 is polarized north, rotor 2 will be polarized south. The rotor is made up of three components: rotor 1, rotor 2 and a permanent magnet. The stepper motor consists primarily of two parts: a stator and rotor. The figures below show two cross-sections of a 5-phase stepper motor. ![]()
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