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0~5v转换成0~3.3V，该如何设计呢？要求成比例转换，谢谢。
Hi
如果只是电压，可以用运放。
请问大概电路该是怎样的呢？用两个运放，一个降压，一个反向？
请问大概电路图是怎样的？是用两个运放么？谢谢啦
