Components: As seen in the drawing
Process:
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EM coils controlled by the circuit is producing an attracting magnetic poles.
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Magnet is thus approaching, carry the movable EM coil with it;
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As the movable EM coil approach, magnetic polarities repelling to the fixed EM coil are formed in itself, thus the movable EM coil are retarding backward along the direction of radius;
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At the same time, as the movable EM coil is moving away from the magnetic poles of the Magnet, an Back EMF is also produced to resist this change.
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The Back EMF from 3 and from 4 are of the same direction, reinforcing the strength of each other.
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The spring behind the movable EM coil are compressed.
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When the Magnet rotate pass the fixed EM coils, the spring would return the movable EM coil to its original position. It would encounter no resistive force since the complete circuit of movable EM coil is open.
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The circuit of movable EM coil is completed once 1 happen.
