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