The sensing circuit determines a value that is a function of {HEAD ~ the current} conducted through {TAIL ~ the load} 
conducted through
The sensing circuit determines a value that is a function of { HEAD ~ the current } conducted through { TAIL ~ the load }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL