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我要寻找一个不受管制的12V备用电池供电的简单示意图。当主电源开启时,电池充电电路以及它提供12V输出。当主电源发生故障,12V输出是来自电池。充电器应与充电和深度放电的自动保护。电池类型为12V,7AH密封铅酸。任何帮助表示赞赏。感谢。
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