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