| 摘要 |
Potentiometers having a reduced number of parts and an improved wiper design suitable for manufacture in a miniaturized form. The resistance element is a conductive film disposed in a circular arc on a ceramic substrate. The substrate also has a conductive pad disposed concentrically with respect to the resistive element and terminal connections are made for each end of the resistive element and to the central pad. A drive member is disposed coaxially with the resistive element and a wiper member is disposed therebetween so as to be driven in rotation by the drive member and to be elastically encouraged into contact with both the central contact area and to the resistive element through a plurality of wiper contacts. A single turn model having a positive stop and two multiple turn models having a clutching means driving the wiper member are disclosed.
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