Three changes in magnet current rotate the rotor to {TAIL ~ three successive stable positions}, the third position being achieved when both magnets are energized to complete one step of {HEAD ~ the motor} and then poles are again induced to start another step if desired 
Three changes in magnet current rotate the rotor to { TAIL ~ three successive stable positions } , the third position being achieved when both magnets are energized to complete one step of { HEAD ~ the motor } and then poles are again induced to start another step if desired
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH