10 Replies Latest reply on Jul 16, 2015 4:50 AM by DaKn_263916

    Sudden strong noise from the analog OpAmp



      I am building a device that works like a phonograph. I am using a piezo disc as a microphone and a pcos3 kit for the amplifying, filtering and processing . But I a getting a terrible sudden noise at the output of the OpAmp for some seconds.


      Maybe somebody knows the reason?


      I attached the amplifier circuit.