Trim condenser

Details Trim condenser Trim condenser

1981-08-11

1984-02-07

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

H01G 506

Patent

active

044306873

ABSTRACT:
The invention relates to a trimming capacitor which is used as a passive construction element in electronics. The purpose of the invention is to avoid utilization of the noble metals as electrode material. The task is to find an equivalent material with the same parameters. The task is solved when the structured electrodes comprise Cu/Ni of 30 to 60% Ni, affixed at a thickness of 1.5 to 3 .mu.m. The roughness depth of the stator surface here is .ltoreq.0.7 .mu.m. The electrodes are affixed to the stator and rotor in the vacuum step by spraying at a high rate with the aid of masks.

REFERENCES:
patent: 1533611 (1925-04-01), Respess
patent: 2219921 (1940-10-01), Gerth
patent: 2535367 (1950-12-01), Minnium
patent: 2585752 (1952-02-01), Dorst
patent: 3500147 (1970-03-01), Hirschberg
patent: 3794518 (1974-02-01), Howell
patent: 3872360 (1975-03-01), Sheard
patent: 4241378 (1980-12-01), Dorrian
patent: 4353106 (1982-10-01), Shirakawa
patent: 4389696 (1983-06-01), Azuchi

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