Variable capacitor and method

Details Variable capacitor and method Variable capacitor and method

1994-09-29

1996-09-17

Tolin, Gerald P.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

361277, 3612831, 361287, 3612981, 3612994, 3612995, 3612983, 3612984, H01G 501, H01G 516

Patent

active

055574955

ABSTRACT:
A variable capacitor and method of varying capacitance in which two pressurally engaged plates having electrically conductive patterns on facing surfaces are separated by a low friction polytetrafluoroethylene (Teflon.TM.) dielectric disk so that the plates may be rotated relative to one another to vary capacitance. Each of the facing surfaces of the plates include two spaced semicircular patterns, one that is electrically connected to the capacitor and one that is not, for maintaining the separation of the plates from the disk. The dielectric disk may be ten to twenty times thicker than the semicircular patterns.

REFERENCES:
patent: 3938012 (1976-02-01), Patti
patent: 4234139 (1980-11-01), Porchia
patent: 5172039 (1992-12-01), Owens

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