| 摘要 |
PROBLEM TO BE SOLVED: To suppress a noise generated from a power source device with a simple and inexpensive configuration.SOLUTION: There is provided a rectifying/smoothing circuit having diodes 11a to 11d, including a diode bridge 11 that rectifies an AC voltage Vac of an AC power source 10, and a primary smoothing capacitor 101 that smooths a voltage rectified by the diode bridge 11, and further including a diode 12 that has a shorter reverse recovery time than that of the diodes 11a to 11d, where the diode 12 is connected between a regular output end, of two output ends of the diode bridge 11, which outputs a higher voltage and a positive electrode terminal of the primary smoothing capacitor 101.SELECTED DRAWING: Figure 3 |
