A position sensor includes a resistive element positionable on a first surface.
A pair of leads are on the resistive element, the pair of leads adapted to supply
a first voltage, such as by being grounded. An intermediate lead is positioned
on the resistive element between the pair of leads, the intermediate lead being
adapted to provide a second voltage. A contact element is positionable on a second
surface, the contact element adapted to contact at least a portion of the resistive
element to detect a voltage at a contact position, the detected voltage being related
to the position or movement of the second surface relative to the first surface.
In another version, a position sensor includes a resistive element comprising first
and second resistive strips. A plurality of leads are positioned on each resistive
strip to provide a voltage to each resistive strip.