Abstract: A power supply apparatus includes a board including a major surface on which a circuit element is mounted, and a case. The case includes a cover portion located at a distance from the board and covering the major surface of the board, and a plurality of leg portions extending from the cover portion toward the board, the case being attached to the board by the leg portions. The leg portions of the case include corner-attachable leg portions that are engaged with corner portions of the board.

Abstract: A power supply apparatus includes a board including a major surface on which a circuit element group is mounted, and a case attached to the board. The case includes a plate-shaped portion that is located at a distance from the board and faces the major surface, and a side wall portion extending from the plate-shaped portion toward one end portion of the board. One end of a specific circuit element among the circuit element group reaches the one end portion of the board, the one end of the specific circuit element being directed to the side wall portion. The side wall portion is provided with a notch portion with a shape corresponding to an outer shape of the one end of the specific circuit element.

Abstract: A power supply apparatus includes a board including a major surface on which a circuit element is mounted, and a case. The case includes a cover portion located at a distance from the board and covering the major surface of the board, and a plurality of leg portions extending from the cover portion toward the board, the case being attached to the board by the leg portions. The leg portions of the case include corner-attachable leg portions that are engaged with corner portions of the board.