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5-Phase Stepper Motor Structure
While the 2-phase motor moves 1/4 tooth pitch each phase. The 5-phase, because of its construction, moves 1/10 of a tooth pitch. Since the pitch is still 7.2°, the step angle is 0.72°. Simply based on construction, the resolution of the 5-phase has 500 steps per revolution versus the 2-phase with 200 steps per revolution. The 5-phase offers a resolution 2.5 times better than that of the 2-phase.