An operating condition circuit senses when the motor has attained substantially the desired running velocity ω, after which, the drive electronics are dynamically reconfigured to operate the spindle motor in {HEAD ~ a line} to {TAIL ~ neutral mode} 
An operating condition circuit senses when the motor has attained substantially the desired running velocity ω , after which , the drive electronics are dynamically reconfigured to operate the spindle motor in { HEAD ~ a line } to { TAIL ~ neutral mode }
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 OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL