| http://www.w3.org/ns/prov#value | - a stator including at least one pole pair and windings associated therewith, a permanent magnet rotor having at least one pole pair, sensing means for determining the angular position of the rotor, switching means for energising respective stator windings from the alternating current mains, and a controller which monitors the output of said sensing means and the waveform of the alternating current
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