We aimed for permanently supplying the electrical energy to an apparatus for in vivo use such as a cardiac pacemaker and proposed a totally implantable electrostatic generator that harnesses the motion of a living body. The generating system consists of a battery for supplying electric charge, a variable capacitor for energy conversion, a capacitor of energy storage and two rectifiers. We made a honeycomb type variable capacitor whose capacitance is varied from 44 to 220 [nF]. It was possible to generate maximum electrical energy of about [μJ/cycle]. We found that the electrical energy for driving a cadinc pacemaker can be generated by using the honeycomb-type capacitor with higher capacitance.
