Patent ID: 7868271

Claim:
A control device for an electrical appliance such as a hob, for converting a control movement along a control path into a control signal, wherein said control signal is dependent on said control path covered during said control movement, wherein at least two measuring tracks each having identical physical characteristics are provided with a measured value of said physical characteristic of said measuring tracks, which in case of both said measuring tracks said measured value increases or decreases monotonically along said measuring tracks, wherein along each said measuring track a respective detection device is provided for accomplishing the measured value of each measuring track's physical characteristic, said detection device capable of being moved relative to said measuring tracks, wherein said measuring tracks are interconnected and said detection devices are mechanically interconnected and move relative to one another along said measuring tracks so as cover a same distance during said control movement, said physical characteristics of said measuring tracks being such that a summation of said measured values in a normal operating state of said control device equals a preset value stored in said control device, wherein said measured value is used by said control device to generate said control signal.