ELECTRICAL SENSOR FOR MEASURING CHANGE IN CAPACITY AND IMPLEMENTATION IN A SPANISH SIGNAL

摘要

The invention relates to an electrical sensor for measuring capacitance change of a capacitor and for conversion into a voltage signal (Udiff) corresponding to the capacitance change. The voltage signal is sent to a display device or measuring device and evaluated using a transformer having two double-would coils (La, Lb) on a core. The capacitance change generates a differential current in a tertiary coil (Lc), which is evaluated in the display or measuring device.