{TAIL ~ The error voltage} represents the magnitude and sign of {HEAD ~ the difference} between the actual and the required common power component 
{ TAIL ~ The error voltage } represents the magnitude and sign of { HEAD ~ the difference } between the actual and the required common power component
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH