An illustration could be the above schematic with the common-method choke and pair of capacitors linked to an op-amp. The transfer functionality from the amplifier can then be adjusted by incorporating reactive elements for the feedback loop, While watch out for The steadiness of such a active EMI filter circuit. https://messiahjtcko.is-blog.com/37610507/the-definitive-guide-to-fn3270h-200-99