W h e n p la te 1 is tu r n e d a b o u t fixed ax is A , the c a p a c ita n c e of the p ic k u p ,
a v a r ia b le c a p a c ito r c o n s is tin g of p la te s 1 an d 2, changes. The dependence
of th e c a p a c ita n c e on th e an g le of r o ta tio n of p la te / is a fu n c tio n th a t
can be a r b it r a r ily v arie d b y s u it a b ly se le ctin g th e shapes of p la te s 1
an d 2. T his p ic k u p is a p p lie d in r a d io e n g in e e rin g devices to tu n e c irc u its .
$4349$SmE,M$