Variable capacitor

Details Variable capacitor Variable capacitor

1976-05-05

1978-01-10

Goldberg, E. A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

361292, H01G 506

Patent

active

040682854

ABSTRACT:
A variable capacitor is provided wherein a reinforcing plate is utilized in the rotor assembly in order to increase the range of the capacitor. The capacitor includes the stator plate and first electrode, the stator plate supporting a lead pin and a rotor positioning member, the rotor positioning member being rotatably mounted thereon. The rotor positioning member rotatably supports a uniformly thick rotor assembly in rotatable friction contact with the stator plate and first electrode. The rotor assembly includes a dielectric, a second capacitor electrode and a reinforcing plate, the thickenss of the dielectric determining the minimum value of capacitance of the variable capacitor. The rotor assembly also includes a fixed spring secured to the positioning member, the lead pin and fixed spring being adapted to facilitate use of variable capacitor in small-size electronic instrumentation.

REFERENCES:
patent: 3244951 (1966-04-01), Wallace
patent: 3883937 (1975-05-01), Alexander

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