Because only one spindle motor winding is powered during normal operation, a back EMF voltage may be developed in a single winding to {TAIL ~ a level} to just below {HEAD ~ the source power supply} Vcc level while still able to maintain motor operation 
Because only one spindle motor winding is powered during normal operation , a back EMF voltage may be developed in a single winding to { TAIL ~ a level } to just below { HEAD ~ the source power supply } Vcc level while still able to maintain motor operation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH