Simultaneously, a switching circuit electrically connects the Vcc lines across {HEAD ~ the transducer positioning voice coil motor} in the disc drive, thereby delivering current from the spindle motor to {TAIL ~ the voice coil} 
Simultaneously , a switching circuit electrically connects the Vcc lines across { HEAD ~ the transducer positioning voice coil motor } in the disc drive , thereby delivering current from the spindle motor to { TAIL ~ the voice coil }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL