| 摘要 |
The invention relates to a device for supplying with electric energy a sensor that has a high electric potential and that is used in an enameling line. Said device comprises a light source ( 1 ) that has a low electric potential, especially earth potential. Said light source ( 1 ) is linked, via an optical waveguide ( 4 ), with a light receiver ( 2 ) in which a converter ( 3 ) is disposed which converts the optical energy to electric energy. The light receiver ( 2 ) has the same high potential as the sensor and supplies the latter with the electric energy obtained from the light. This is preferably done via an accumulator ( 8 ) that is continuously recharged with the power generated by the converter ( 3 ). The invention allows therefore for a practically unlimited service life of sensors in enameling lines.
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