The secondary core is preferably secured to the primary bobbin by {TAIL ~ the insert resin molding process} at the time of molding of {HEAD ~ the primary bobbin} 
The secondary core is preferably secured to the primary bobbin by { TAIL ~ the insert resin molding process } at the time of molding of { HEAD ~ the primary bobbin }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD