Variable capacitor

Details Variable capacitor Variable capacitor

2005-12-13

2005-12-13

Ha, Nguyen T. (Department: 2831)

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

C361S278000, C361S280000, C361S281000, C361S283100, C361S290000, C361S291000

Reexamination Certificate

active

06975498

ABSTRACT:
A variable capacitor includes a stator and a rotor rotatably supported by a cover relative to the stator. The stator includes a first stator electrode of two or more layers and a second stator electrode of two or more layers in the interior of a dielectric substrate. The first stator electrode is connected to a first external electrode and the second stator electrode is connected to a second external electrode. The rotor includes a rotor electrode of two pieces opposing the stator electrodes, and capacitances are defined in the areas of overlap of the rotor electrode and stator electrodes. The capacitances are adjustable to extremely small levels.

REFERENCES:
patent: 4112480 (1978-09-01), Johanson et al.
patent: 5424906 (1995-06-01), Kishishita et al.
patent: 6226168 (2001-05-01), Shibata
patent: 6353527 (2002-03-01), Kinoshita et al.
patent: 6625858 (2003-09-01), Kishishita et al.
patent: 10-233338 (1998-09-01), None

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