Motor driven magnetically coupled variable capacitor

Details Motor driven magnetically coupled variable capacitor Motor driven magnetically coupled variable capacitor

H - Electricity

01

G

334/2

H01G 5/14 (2006.01) H01G 5/01 (2006.01)

Patent

CA 1063684

Abstract Of The Disclosure A motor driven magnetically coupled variable capacitor including a follower magnet arranged internally of the capacitor and fixedly coupled to a rotatable shaft, a follower magnet drive magnetically coupled to the follower magnet for rotating the follower magnet and therefore the rotatable shaft, a plurality of stationary capacitive elements fixedly mounted at one end of the capacitor, and a plurality of movable capacitive elements mechanically coupled to the rotatable shaft for axial movement therealong in response to rotation of the rotatable shaft by the follower magnet. The movable capacitive elements coacting with the stationary capacitive elements to vary the capacitance of the capacitor in response to activation of the follower magnet drive. An insulating anti-rotation arrangement is provided for coupling the movable capacitive elements to the rotatable shaft for translating rotational movement of the rotatable shaft into linear movement of the movable capacitive elements. The insulating anti-rotation arrangement includes threaded drive nut mounted on the rotatable shaft, the shaft being threaded to receive the drive nut, an insulating collar concentrically affixed to the threaded drive nut and fixedly coupled to the movable capacitive elements, the insulating collar having a tab coupled thereto, and a stop member fixedly coupled to the capacitor housing for engagement by the tab to prevent rotation of the threaded drive nut and translate the rotational movement of the rotatable shaft into linear movement of the threaded drive nut and thus the movable capacitive elements.

261678

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