| 摘要 |
PROBLEM TO BE SOLVED: To provide an evaluation device of a capacitor which can automatically measure an equivalent series resistance, capacitance and self-discharge resistance of a large-capacity capacitor. SOLUTION: The evaluation device of the capacitor includes: a charge/discharge control section 100 controlling charge and discharge; a charge/discharge switch 200 selecting between connection between the capacitor CSP as a measurement object and a power supply section 50, and connection between the capacitor CSP and a discharge section 300; the discharge part 300 providing a discharge resistance for discharge of the capacitor CSP; a voltage measurement section 400 measuring a voltage of the capacitor CSP; a current measurement section 500 measuring a charge current or a discharge current of the capacitor CSP; and a main control section 600 obtaining the equivalent series resistance Res, the capacitance C, and the self-discharge resistance Rsd based on the voltage, charge current and discharge current of the capacitor CSP in the charge and discharge processes. COPYRIGHT: (C)2011,JPO&INPIT
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