As shown in FIG 3, the iron core 11 is formed of particles 14 of iron or {HEAD ~ an iron based magnetic material} filled in a casing 13 which is made of an insulating synthetic resin such as {TAIL ~ phenol} and nylon 
As shown in FIG 3 , the iron core 11 is formed of particles 14 of iron or { HEAD ~ an iron based magnetic material } filled in a casing 13 which is made of an insulating synthetic resin such as { TAIL ~ phenol } and nylon
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 HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH