wherein {HEAD ~ the current sensor} detects {TAIL ~ a current} by calculating the difference between the amount of a current flowing into any of the plurality of primary windings and the amount of a current flowing from the different primary winding, and 
detects
wherein { HEAD ~ the current sensor } detects { TAIL ~ a current } by calculating the difference between the amount of a current flowing into any of the plurality of primary windings and the amount of a current flowing from the different primary winding , and
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH