When SW1 is in {TAIL ~ a closed position}, the current through inductor 14 is increasing in the direction of {HEAD ~ the battery} 38 
When SW1 is in { TAIL ~ a closed position } , the current through inductor 14 is increasing in the direction of { HEAD ~ the battery } 38
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH