This is a Adams motor with bifilar wound drive coils, the secondary or each drive coil is feed back through a diode into the driving circiut, this reduces the current draw by a small amount. The source is from a 12v battery and is stepped up to 62 volts, using optical switching the power into the coils is just enough to counteract the magnets from sticking when bought together, there is hardly any repulsion, it is the attraction of the magnets to the cores of the coils that create pull for rotation.
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