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有没有AC-DC非隔离低成本电源方案要求5-12V 15W

Other Parts Discussed in Thread: LM2596

有没有AC-DC非隔离低成本电源方案要求5-12V  15W

我自己想了个方案不过算过不可以, 用单桥半波整流 +π型号滤波 不过这个方案最多降到89V 不能满足lm2596的输入条件,所以不敢用