Non-contact magnetic potentiometer
AssigneeCopal Company Limited
InventorShigekazu Nakamura
Life of this patent
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Abstract
A non-contact magnetic potentiometer comprising a rotatably supported first yoke, a second yoke arranged as opposed to the first yoke at a slight spacing, a pair of permanent magnets fixed as inclined on the surface of the first yoke opposed to the second yoke and magnetized in the thickness direction, and a hall effect device fixed on the second yoke as opposed to the pair of permanent magnets, whereby the structure and manufacture can be simplified and an output voltage of any desired wave form can be obtained. This potentiometer is provided with a means for preventing the influences of the temperature and the variation with the lapse of years.
Claims5
A non-contact magnetic potentiometer comprising a rotatable first yoke to which an angular displacement is to be transmitted, a second yoke arranged as opposed to and spaced from said first yoke, a hall effect device fixedly located in parallel with said second yoke between said first yoke and second yoke, and a pair of permanent magnets magnetized in the thickness direction and secured to said first yoke as inclined to said hall effect device, a hall electromotive force being put out of said hall effect device in response to the angle of rotation of said first yoke when said first yoke is rotated.
Dependencies are inferred from the claim text.