Thick-film potentiometer

In a rotary potentiometer having a support substrate, particularly a ceramic substrate, onto which there is applied a plurality of conductor lines arranged adjacent to each other, a resistance track of resistance composition on the conductor lines, a portion of the conductor lines forming a wiper track which extends adjacent to along the resistance track and over which a contact point of a wiper is swingable in a curved path about an axis of rotation, the improvement wherein

• said conductor lines and said resistance track are films applied on the substrate in thick film technology construction, said conductor lines are narrow compared with the length of said wiper track and are arranged, spaced apart from each other, substantially at right angles to said wiper track,
• said resistance track is arranged on said support substrate exclusively outside of said wiper track upon and adjacent to said conductor lines,
• said conductor lines at least in the area of said wiper track are all arranged parallel to all of each other,
• the distance between every two adjacent of said conductor lines is approximately equal to the width of each of said conductor lines,
• said conductor lines have a rectangular flat surface facing the wiper on which the contact point of the wiper engages,
• at least a portion of said resistance track is arranged on both sides of said wiper track.