电源激活的瞬间，由于C1 (一次侧滤波电容)短路，导致Iin电流很大，虽然时间很短暂，但亦可能对Power产生伤害，所以必须在滤波电容之前加装一个热敏电阻，以限制开机瞬间Iin在Spec之内 ...

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