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