A pair of electromagnets having {TAIL ~ ferromagnetic cores} with end adjacent a toothed ferromagnetic rotor are energized to induce temporary magnetic poles in {HEAD ~ the respective rotor} teeth 
A pair of electromagnets having { TAIL ~ ferromagnetic cores } with end adjacent a toothed ferromagnetic rotor are energized to induce temporary magnetic poles in { HEAD ~ the respective rotor } teeth
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH