Two electromagnets have coil windings with respective cores ending adjacent the teeth to provide {HEAD ~ magnetic fields} between the core ends and {TAIL ~ the teeth} 
between
Two electromagnets have coil windings with respective cores ending adjacent the teeth to provide { HEAD ~ magnetic fields } between the core ends and { TAIL ~ the teeth }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL