means responsive to {HEAD ~ the inverter power} for generating {TAIL ~ a first input signal} having a frequency equal to the inverter power frequency divided by a first factor 
for generating
means responsive to { HEAD ~ the inverter power } for generating { TAIL ~ a first input signal } having a frequency equal to the inverter power frequency divided by a first factor
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH