| 摘要 |
PROBLEM TO BE SOLVED: To provide a substrate unit in which a transformer is mounted to a printed circuit board without penetrating it.SOLUTION: A substrate unit 10 comprises: a printed circuit board 20; a mounting member 30 that is separate from the printed circuit board 20 and mounted to a surface of the printed circuit board 20; a transformer 60 in which windings 63P, 63S are wound around a ring-like core 61 to constitute coils 66P, 66S; and a holding section 33 formed on the mounting member 30 and holding the transformer 60. The transformer 60 is mounted to the printed circuit board 20 via the mounting member 30 mounted to the surface of the printed circuit board 20, and therefore, there is no need of penetrating through the printed circuit board 20. Accordingly, even when the ring-like core 61 is a single component, the transformer 60 can be mounted to the printed circuit board 20. |
