样板第一次打样,回来调试时候发现,vout后面的反向二极管,接上之后就没有电压输出了,不接电压是OK的。
设计为7-28V输入。输出为5V.反向的D2 二极管用SS14和5819都试过了。效果一样都没有输出。那位知道的请帮忙解答一下,万分感谢!
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