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图中红框里电路的作用 = What is the function of the circuit in the red box in the figure?
充放电电路
具体是怎么工作的？比如电路的放电路径，我准备将这一块电路给去掉
HI
这个是同步整流，这样设计会增加电路的效率。
不能去掉，但是你可以改变整流方式，差别在于效率差一些。
