Patent ID: 11346893

Abstract:
A method for determining the remaining service life of a capacitor is disclosed, wherein the capacitor may be formed by an electrolytic capacitor. The method includes the stages of: measuring a voltage change across the capacitor during a discharging time, determining a discharging current during the discharging time, determining an actual capacitance of the capacitor on the basis of the voltage change, the discharging current and the discharging time, determining a corrected capacitance of the capacitor from the actual capacitance based on an error correction, wherein influences of the temperature on the capacitance of the capacitor are corrected during the error correction, and determining the remaining service life on the basis of a difference between the corrected capacitance and an initial capacitance of the capacitor. A system including an assessment device, configured to perform this method, and a circuit having at least one capacitor to be assessed are also disclosed.