1.正常工作时uc3843的1脚电压2.3伏左右3脚电压0.3伏.
2.两个pnp三极管A1015 Q1集电极接3843的3脚.
小弟从资料上看到1脚是误差放大的输出,3脚是电流取样输入?可是二者怎样协调工作的?我看了半天资料也不明白,1脚的电压过低或者3脚的电压过高就会保护吗?临界值是多少啊?
我对这个电路似懂非懂好长时间了!恳请电源界的前辈给小弟讲一讲好吗?
单端反激式
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