whereby {HEAD ~ the capacitive means} and inductive means operate cooperatively to supply {TAIL ~ a quasi sinewave voltage} at the control electrode and the control means is operative for varying a frequency of operation of the converter to control a signal amplitude at the output means 
operate cooperatively to supply
whereby { HEAD ~ the capacitive means } and inductive means operate cooperatively to supply { TAIL ~ a quasi sinewave voltage } at the control electrode and the control means is operative for varying a frequency of operation of the converter to control a signal amplitude at the output means
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL REL TAIL TAIL 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 OTH