When the opening portion of the casing is closed with the closing member, both end faces in the longitudinal direction of {HEAD ~ the secondary core} formed in {TAIL ~ the primary bobbin face} to the inside peripheral surfaces of the primary core 
formed in
When the opening portion of the casing is closed with the closing member , both end faces in the longitudinal direction of { HEAD ~ the secondary core } formed in { TAIL ~ the primary bobbin face } to the inside peripheral surfaces of the primary core
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH