A reactor comprising an annular iron core constituting a closed magnetic path and {HEAD ~ a conductor wound} on {TAIL ~ the iron core} 
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A reactor comprising an annular iron core constituting a closed magnetic path and { HEAD ~ a conductor wound } on { TAIL ~ the iron core }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL