| 摘要 |
PROBLEM TO BE SOLVED: To provide a voltage smoothing circuit having a multilayer capacitor, and capable of feeding a smooth voltage and reducing noise in a circuit board.SOLUTION: A voltage smoothing circuit 11 includes: a first multilayer capacitor C1 and a second multilayer capacitor C2; and a regulator 13 having an input terminal 13a electrically connected to the second multilayer capacitor C2 and an output terminal 13b electrically connected to the first multilayer capacitor C1. When an electric potential difference applied to the second multilayer capacitor C2 increases or decreases, so as to reduce or increase an electric potential difference applied to the first multilayer capacitor C1, the regulator 13 calculates a first voltage applied to the first multilayer capacitor C1 based on a second voltage applied to the second multilayer capacitor C2 from the input terminal 13a and outputs the first voltage from the output terminal 13b. |
