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