A permanent magnet with its one face in contact with {HEAD ~ one end face} of {TAIL ~ the secondary core} is supported on the primary bobbin, while the other face of the permanent magnet is in contact with the primary core 
A permanent magnet with its one face in contact with { HEAD ~ one end face } of { TAIL ~ the secondary core } is supported on the primary bobbin , while the other face of the permanent magnet is in contact with the primary core
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH