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铅酸蓄电池充电

需要设计一款给铅酸蓄电池充电电路,输入为96~240VAC,铅酸蓄电池为12V/3.4A,希望完成的功能就是直流14.2V/0.5A给铅酸蓄电池充电,有充电状态指示,不知是否有相应简单的电路或者电池管理IC,谢谢