如果是大电流可以理解是mos长时间导通了,但如果是高压,从何而来?整流后的直流不是才300V左右吗?
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量产电源,只是为什么滤波电容容量减小,只是炸管原理搞不懂
DC310V的滤波电容,也就是整流桥后面的滤波电容失效!!!
Hi
你可以比较减小输入电容前后输入电压的波形变化? 需要确认电容减小后,输入电压是否瞬态的拉低,导致瞬态电流变大。