Trimmer capacitor

Details Trimmer capacitor Trimmer capacitor

1992-04-16

1993-07-20

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

H01G 506

Patent

active

052299120

ABSTRACT:
In a trimmer capacitor comprising a stator having a stator electrode, a rotor having a rotor electrode and a shaft holding the rotor in a rotatable manner with respect to the stator, the stator is formed of resin containing a dielectric ceramic material. The stator electrode is located in the interior of the stator, so that the stator electrode is opposed to the rotor electrode through a dielectric layer which is defined by an integral part of the stator. The stator, the stator electrode and the dielectric member which are required for the trimmer capacitor are entirely integrated with each other in the stator, whereby the trimmer capacitor can be easily assembled. The resin, containing the dielectric ceramic material, forming the dielectric layer is superior in shock resistance to a ceramic material, whereby no problem of cracking etc. occurs even if the thickness of the dielectric layer is reduced.

REFERENCES:
patent: 2745993 (1956-05-01), Foster
patent: 3883937 (1975-05-01), Alexander et al.
patent: 4220980 (1980-09-01), Yamamoto et al.
patent: 4353106 (1982-10-01), Shirakawa

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