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EL357N的CTR是50~600，EL357NA的CTR是80~160，原理图见附件，有明白的帮忙分析一下，谢谢。
请帮忙分析，谢谢。
你好，
都可以，无非就是推导出来的传递函数有些区别，但是对闭环稳定电压值没有影响
