The present disclosure relates to a circuit and a method for carrying out an alternating heating and capacitive measuring operation by means of a common heating wire, comprising the following steps: carrying out a heating operation, during which a pair of first switching elements and a pair of second switching elements are in a conducting state and the heating wire is conductively connected to one of two different heating potentials such that a heating current is applied to the heating wire; initiating a change from heating operation to measuring operation of the first switching elements and the second switching elements by way of a control circuit; carrying out the measuring operation in which a measuring capacitance of the heating wire is determined with respect to a reference potential by way of a detection circuit; and carrying out a test phase falling within the time frame of the measuring operation.
ELECTRICAL CIRCUIT CONFIGURATION FOR ALTERNATING HEATING AND CAPACITIVE MEASURING OPERATION WITH FUNCTIONAL TESTING AND ASSOCIATED METHOD AND USE
15.05.2025
Patent
Elektronische Ressource
Englisch
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