Potentiometer device for determination of valve positions

Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture

Reexamination Certificate

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Details

C123S568160

Reexamination Certificate

active

06990967

ABSTRACT:
A potentiometer device, for detecting valve positions, wherein a voltage signal Usis sendable to a control unit having an A/D converter, including a carrier element on which at least one slider track, having a slider element in contact therewith, is disposed; wherein the slider track switches between supply voltage Uvof the control unit and ground, and the slider element is connected with the control unit with a protection resistance over an output, wherein the control unit includes a resistance for detecting a cable disconnect, which is a pull-down resistance between voltage signal Usand ground, or a pull-up resistance between supply voltage Uvand voltage signal Us, wherein a resistance is provided at output, that is, in a first embodiment, a pull-up resistance between supply voltage Uvand voltage signal Us, and, in a second embodiment, a pull-down resistance between voltage signal Usand ground.

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German Search Report, dated Mar. 3, 2004.

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