means responsive to said first and second input signals for generating {HEAD ~ the timing signals} at {TAIL ~ a frequency} equal to the inverter power frequency divided by said first factor and multiplied by said second factor 
at
means responsive to said first and second input signals for generating { HEAD ~ the timing signals } at { TAIL ~ a frequency } equal to the inverter power frequency divided by said first factor and multiplied by said second factor
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH