| 摘要 |
PROBLEM TO BE SOLVED: To provide a noise reduction device of a switching circuit, having a great noise reduction effect, and downsized.SOLUTION: The noise reduction device of the switching circuit is equipped with: a second switching driver which operates based on a pulse signal in the phase opposite to that of a pulse signal to be inputted at an input end of a first switching driver; and an impedance element in which one end is connected to an output end of the second switching driver and the other end is connected to an output terminal of the switching circuit. The impedance value Zv of the impedance element, the inductance value L of a first coil, the capacitance value C of a capacitor, and the switching frequency fc of the first, and second switching drivers, satisfy, using (a) as an arbitrary constant except zero, the relation of the following formula 3. |
