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.

向各位工程师请教一下一个关于THS3091自激的问题

Other Parts Discussed in Thread: THS3091

              如图-1用THS3091搭建一个同相放大器,由信号源提供一个峰峰值为200mV左右,                                                                  图—1

频率为1KHz的正弦波,用TINA仿真时没有发现自激的现象,但是实际搭建电路实验时就自激了,  

然后在同相输入端下拉一个51欧电阻到地(如图—2)自激现象就消失了,

                                                                                                                                                   

                                                                                                                                                   

     

                                                           图-2