| 摘要 |
The purpose of the present invention is to provide a switching power supply apparatus capable of avoiding intensification of noise in a specific frequency component. The present invention is a switching power supply apparatus characterized by being provided with: a switching power supply which switches, and outputs as a secondary power supply, an input from a primary power supply; and a noise frequency analyzing device which analyzes a noise frequency component contained in an output from the primary power supply or the secondary power supply, and which causes the switching power supply to switch to a frequency different from a noise that has the maximum amplitude within the frequency component. |
