An illustration could be the above schematic with the popular-manner choke and set of capacitors linked to an op-amp. The transfer functionality of your amplifier can then be modified by introducing reactive aspects into the suggestions loop, although watch out for The soundness of this kind of active EMI filter https://headsupdisplayhelmet20753.dailyhitblog.com/36646961/not-known-facts-about-ac-emi-filter