| 摘要 |
PROBLEM TO BE SOLVED: To obtain sufficiently low internal resistance and stable output voltage by connecting a predetermined amount of aluminum electrolytic capacitor with the same rating in parallel, where their total capacitance is more than a specified capacity on the order of Farad and their internal resistance is less than a specified resistance on the order of mΩ. SOLUTION: An acoustic electrolytic capacitor 1 comprises n pieces of aluminum electrolytic capacitors 1a-1n with the same rating in parallel connection, where the total capacitance of the capacitor unit 1 is more than 1 F and an internal resistance of the unit 1 is less than 1.0 mΩ. Also, the capacitor unit 1 comprises four groups in which each group has aluminum capacitors in parallel connection on one circuit board and four circuit boards for each group are connected in parallel, where capacitance of each group is approximately 0.25 F and each internal resistance is less than 4.0 mΩ.
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