If {HEAD ~ the level ratio} of IP/IA is larger than a set value, a constant percentage or more of the high frequency current IA flowing out via {TAIL ~ the terminal A} passes through the plate 29 and returns to the terminal P 
If { HEAD ~ the level ratio } of IP / IA is larger than a set value , a constant percentage or more of the high frequency current IA flowing out via { TAIL ~ the terminal A } passes through the plate 29 and returns to the terminal P
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH