The reactor comprises an comrises an annular iron core 11 constituting {HEAD ~ a closed magnetic path} and a coil 12, {TAIL ~ a conductor} wound around the iron core 11 
The reactor comprises an comrises an annular iron core 11 constituting { HEAD ~ a closed magnetic path } and a coil 12 , { TAIL ~ a conductor } wound around the iron core 11
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH