| 摘要 |
<p>A circuit board (1) includes a magnetic transformer (24) with a magnetic core (21) and two windings (9, 10). The magnetic core (21) comprises a C-shaped part (22) which is inserted into corresponding cut-out areas (7, 8) in the circuit board (1) as well as an I-shaped part (21) that is fitted to the legs of the C-shaped part. The windings of the magnetic transformer (24) are implemented as traces (9, 10, 11, 12) on the circuit layers (3, 4) of the circuit board (1). In order to efficiently cool the circuit board (1), the circuit board (1) is provided with a metallic layer (2) that is an integral part of the circuit board (1) and that includes slits (25) for prohibiting the metallic layer (2) to act as a short-circuit. Moreover, the metallic layer (2) enables a good shielding either of the circuit board itself or of external electrical and/or electronic circuits.</p> |
