HOUSEHOLD APPLIANCE FOR DRYING LAUNDRY ITEMS AND METHOD FOR DETERMINING A MEASUREMENT VARIABLE CORRELATED TO A LEVEL OF DRYNESS

摘要

The invention relates to a household appliance 1 for drying laundry items 3, wherein the momentary level of dryness of the laundry items 3 is to be particularly reliably determined. A measuring device 5 is provided in the household appliance 1 for determining a measurement variable 4, Uw, correlated to the level of dryness of the laundry items 3. The measuring device 5 comprises two measurement electrodes 6, 7 spaced apart from each other and a circuit configuration 8 coupled to the measurement electrodes 6, 7, bringing about a current flow I through the measurement electrodes 6, 7, capturing an electrical laundry voltage drop Uw between the measurement electrodes 6, 7, and deriving the measurement variable 4, Uw, as a function thereof. A direction of the current flow I through the measurement electrodes 6, 7 is changed repeatedly. Galvanic effects at the measurement electrodes 6, 7 are thus prevented.