现在有一个可调速电机,我想给它加几个指示灯,本来以为挺简单的,尝试了一下,没有成功,想请前辈们指点一下.图如附件所示:我想给档位2,3,4加上相应的指示灯,这样当某个档位闭合时相应指示灯亮,其它指示灯不亮.或者随着风力的增强指示灯亮的数量也增加,比如2闭合D3亮,3闭合时D2,D3亮,4闭合时D1,D2,D3都亮,不知道是否能实现.
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