| 摘要 |
A printed circuit board (PCB) assembly provided with an insulation transformer, which acts as an insulation barrier between two electrical systems. The printed circuit board (PCB) assembly has at least two separate PCB sections, and the insulation transformer is used as a support structure to mechanically interconnect the sections. Since the PCB sections are separated, the PCB sections no longer affect the creepage distance for the insulation barrier. Instead the insulating material and the physical design of the transformer determines the minimum required creepage distance. The insulating material of the transformer generally has a considerably higher CTI value than the PCB material, leading to a relatively short creepage distance being required. By breaking the creepage path on the PCB, the size of transformer will be substantially reduced compared to the prior art arrangements. |
