Further, {HEAD ~ positive going pulses} are be produced during a portion of the first half of {TAIL ~ each cycle}, or period P, for transistor Q1 while positive going pulses for transistor Q2 are produced during a portion of the second half of such cycle 
Further , { HEAD ~ positive going pulses } are be produced during a portion of the first half of { TAIL ~ each cycle } , or period P , for transistor Q1 while positive going pulses for transistor Q2 are produced during a portion of the second half of such cycle
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH