| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply device that easily allows reduction in size and reduction of noise.SOLUTION: A power supply device 1 comprises: a transformer 2 that has a primary coil and a secondary coil; a semiconductor element 3 that constitutes a rectifier circuit connected to the secondary coil side of the transformer 2; at least one smoothing component (a choke coil 41) that constitutes a smoothing circuit smoothing an output voltage; and base plate 5 on which these components are mounted. The transformer and at least the one smoothing component (the choke coil 41) are stacking arrangement components stacked and arranged in the normal direction of a mounting surface 51 of the base plate 5 with respect to the semiconductor element 3. |
