Therefore, during the second half of the period, current RL passes in {TAIL ~ the direction} indicated by {HEAD ~ the arrow} 19 
Therefore , during the second half of the period , current RL passes in { TAIL ~ the direction } indicated by { HEAD ~ the arrow } 19
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH