This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
正常应输出3.3V，现在无论带载（额定功耗月36mA）还是空载，输出都会不定时的出现电压升高的波动，高的时候有4.5V，低的时候也有几百mV。
下图为空载时输出电压波形
附电路图：
