coils 23 mounted outward the movable armature core 21 to move the armature core slidably; and an unillustrated spring to hold the movable armature core 21 in a desired position in accordance with {TAIL ~ the amount} of energization current provided to {HEAD ~ the coils} 23 
coils 23 mounted outward the movable armature core 21 to move the armature core slidably ; and an unillustrated spring to hold the movable armature core 21 in a desired position in accordance with { TAIL ~ the amount } of energization current provided to { HEAD ~ the coils } 23
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 OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH