设计10MHz带通滤波电路,Tina仿真正常,制板焊接上电示波器显示一个7MHz+自激振荡信号,幅度大约4V左右,修改R34和R36为10k自激振荡消失(理论上这两个值保持一致即可),但是4V的正弦信号输出幅度只有100mv左右。
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设计10MHz带通滤波电路,Tina仿真正常,制板焊接上电示波器显示一个7MHz+自激振荡信号,幅度大约4V左右,修改R34和R36为10k自激振荡消失(理论上这两个值保持一致即可),但是4V的正弦信号输出幅度只有100mv左右。