| 摘要 |
PROBLEM TO BE SOLVED: To enhance power saving performance and accuracy, in the measurement for determination method of degradation in a capacitor with electrolytic solution arranged in between electrode objects. SOLUTION: In the method, a capacitor is provided with a pair of electrode objects and electrolytic solution arranged in between the electrode objects. An AC voltage is applied to this capacitor to measure impedance characteristics, based on the frequency of the AC voltage and then determine degradation in the capacitor, where an inflection point, appearing in the impedance characteristic by degradation in the electrolytic solution, is calculated in advance, so as to compare the impedance value of a domain of frequency lower than that of this inflection point, for determination of degradation in the capacitor. COPYRIGHT: (C)2006,JPO&NCIPI
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