Electrical control devices

G - Physics – 10 – H

Patent

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Details

340/137, 84/1.5

G10H 1/00 (2006.01) G10H 1/055 (2006.01) G10H 1/32 (2006.01) G10H 5/00 (2006.01)

Patent

CA 1073251

ABSTRACT OF THE DISCLOSURE An electrical control device comprises a base member, and an elongate support member mounted to be movable transversely of its length with respect to the base member and biased against movement in one direction transversely of its length and towards a null position. An elongate resistive member extends along the length of the support member, and when the ends of the resistive member are connected to oppo- site poles of a voltage source a sensing electrode can be applied to the resistive member to tap off a voltage which is selectively variable by varying the position along the support member at which the sensing electrode is applied to the resistive member. Application of the sensing electrode to the resistive member tends to bring about movement of the elongate member with respect to the base member in opposition to the bias on the elongate member. A position pick-ups has a first part connected to the support member and a second part connected to the base member, and generates an electri- cal analog signal dependent on the position of the support member with respect to the base member.

279580

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