On the secondary core, a primary bobbin including a bobbin main portion covering the side peripheral surface of the core main portion and a holding portion formed integrally with and on {HEAD ~ one side} of the bobbin main portion is formed out of {TAIL ~ an insulating synthetic resin} 
is formed out of
On the secondary core , a primary bobbin including a bobbin main portion covering the side peripheral surface of the core main portion and a holding portion formed integrally with and on { HEAD ~ one side } of the bobbin main portion is formed out of { TAIL ~ an insulating synthetic resin }
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 HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL