在做13年电子竞赛的 AC-DC变换电路的电源 ucc28019照着官网给出的参数做出板来，结果不工作，怎么解决~在线等 急.......
测得2脚3.9v 3脚3.6v 6脚0.4v 8脚还是没输出 哪里有问题吗 大佬们
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