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