The system also includes {HEAD ~ a voltage source} providing {TAIL ~ a direct current level voltage} with respect to an electric ground and a switching circuit adapted to operate the motor 
providing
The system also includes { HEAD ~ a voltage source } providing { TAIL ~ a direct current level voltage } with respect to an electric ground and a switching circuit adapted to operate the motor
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH