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给五号电池充电的充电器的原理
更新时间： 2020-07-16 00:00:00  

把220V交流，先通过“阻容降压”加到“小型开关变压器”，利用“脉波宽度调制”电路，产生高频振荡电流，再通过变压器降压、整流、滤波，得到低压直流电。

关键词： 电池 充电 充电器 原理

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