Method and apparatus for using spring-type resistive elements in

Details Method and apparatus for using spring-type resistive elements in Method and apparatus for using spring-type resistive elements in

1982-09-22

1986-12-23

Karlsen, Ernest F.

Electricity: measuring and testing

Magnetic

Displacement

336 20, G01B 714, H01F 2102

Patent

active

046314784

ABSTRACT:
A method for converting a movement into an analog or digital variable, in particular into an electrical voltage, and an apparatus for performing the method are proposed. The apparatus includes at least one measuring spring element having windings and fabricated of electrically conductive material, which is disposed together with a supplementary spring element of identical structure and serving as a supplementary resistor in a bridge branch of a carrier-frequency measurement bridge. A deformation of the measuring spring element by a movement causes a change in the spacing between windings and thus causes a change in the inductive resistance of the measuring spring element which serves as a standard for the movement.

REFERENCES:
patent: 2367576 (1945-01-01), Harvey et al.
patent: 2525587 (1950-10-01), Cahn
patent: 2563413 (1971-08-01), Ostrow
patent: 2564416 (1951-08-01), Wildhach
patent: 3973191 (1976-08-01), Zabler
patent: 4013986 (1977-03-01), Wechenmann
patent: 4085394 (1978-04-01), Weisenburger

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