Mitsumi Electric Company Ltd.

Norikatsu Shinba

Mikito Baba

Yoshikatsu Iizuka

Shigeyoshi Odagiri

Michio Nuka

A miniature variable capacitor comprises a stator plate group having a plurality of stator plates stationarily held in mutually spaced-apart state with specific spacing therebetween by spacers interposed between mutually adjacent plates, a rotor plate group having a plurality of rotor plates held integrally and rotatably in mutually spaced-apart state with specific spacing therebetween by spacers interposed between mutually adjacent rotor plates, and a thin film of a dielectric material is formed simultaneously and integrally on the entire exposed surface of all plates and spacers of at least one of the stator plate group and the rotor plate group. Furthermore, one or more elastic spacers are provided at plate supporting parts of at least one of the stator and rotor plate groups, and fine powder is distributed over the surfaces of all plates. At the time of production of the variable capacitor the dielectric material is formed in a thin film state on the entire plate group.

Growing community of inventors

Machida, Japan

Norikatsu Shinba