The base input to {HEAD ~ transistor Q8} is coupled to a microprocessor controller within the drive electronics 104, which generates sequential base drive signals for the control of {TAIL ~ transistor Q8} 
The base input to { HEAD ~ transistor Q8 } is coupled to a microprocessor controller within the drive electronics 104 , which generates sequential base drive signals for the control of { TAIL ~ transistor Q8 }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL