Thus, when SW2 is in {HEAD ~ a closed position}, the current through the inductor 14 increases in the direction of {TAIL ~ the bus} 40 
Thus , when SW2 is in { HEAD ~ a closed position } , the current through the inductor 14 increases in the direction of { TAIL ~ the bus } 40
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH