Electricity: electrical systems and devices – Electrostatic capacitors – Variable
Patent
1978-08-18
1980-09-16
Goldberg, E. A.
Electricity: electrical systems and devices
Electrostatic capacitors
Variable
151 14R, 151 70, 361295, H01G 514
Patent
active
RE0304069
ABSTRACT:
A low loss capacitor having hollow cylindrical electrodes which are coaxially interleaved. The capacitance is varied by rotation of the rotor electrodes which are mounted on a screw member for axial displacement with respect to the stator electrodes when the screw member is turned. The scew member has a frictional locking means.
REFERENCES:
patent: 1862930 (1932-06-01), Gebhard
patent: 2224659 (1940-12-01), Stoll
patent: 2427560 (1947-09-01), Johnson
patent: 2576438 (1951-11-01), Beach
patent: 2607826 (1952-08-01), Barnes
patent: 3242398 (1966-03-01), Berman
Dummer "Variable Capacitors & Trimmers" Pitman & Sons London 1963, pp. 89-92.
Goldberg E. A.
Johanson Manufacturing Corporation
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