Miniature variable capacitor and method of manufacture

Details Miniature variable capacitor and method of manufacture Miniature variable capacitor and method of manufacture

1975-02-18

1976-04-06

Goldberg, E. A.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

29 2541, 29 2542, 317254, 427 79, H01G 506

Patent

active

039492800

ABSTRACT:
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.

REFERENCES:
patent: 1337549 (1920-04-01), Fitzgerald
patent: 1533611 (1925-04-01), Respess
patent: 3854181 (1974-12-01), Matsuwake

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