Waveform 308 represents the duty cycle of the pulse width modulated signal applied to the transistor switch 64 for controlling {HEAD ~ the voltage} and {TAIL ~ current} of the solenoid 16 
Waveform 308 represents the duty cycle of the pulse width modulated signal applied to the transistor switch 64 for controlling { HEAD ~ the voltage } and { TAIL ~ current } of the solenoid 16
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH