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