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我先设置输出9V,带载2A,然后控制E/S的时候不能拉高,它不能正常输出;
但是我先设置输出9V,不带载,然后能控制E/S拉高,再加上负载,它可以正常输出。
也就是说我先带上负载的话就不能拉高E/S,这个问题该怎么解决?