The stator can be built up of individual coils arranged radially about {HEAD ~ the rotor} with {TAIL ~ a common magnetic yoke} and the coil cores can each carry a winding of the drive winding and the control winding 
The stator can be built up of individual coils arranged radially about { HEAD ~ the rotor } with { TAIL ~ a common magnetic yoke } and the coil cores can each carry a winding of the drive winding and the control winding
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH