Potentiometric position sensor which disables the slider beyond the functional range

Position sensor 1 generates an electric signal according to the position of a movable element (e.g. a vehicle clutch pedal, steering arrangement or throttle). It comprises: first sensor element 2 with (e.g. linear, arc-shaped or elliptical) sliding track 6 formed by resistive track 5 (and optionally conducting track 4) on substrate 3; and second sensor element with slider finger 8 which forms a sliding contact 9 with the track so as to transmit the position of the movable element. The first sensor element comprises functional and dead areas 10, 11, the sliding track being laid in the functional area only; and guide 14 arranged on an edge 13 of the track in transitional area 15 to exert bending forces on the slider finger during any movement therein, thus deforming it so that it is no longer able to touch the sliding track.