Resolving EMI Common Mode & Normal Mode Noise

https://www.electronics-notes.com/articles/analogue_circuits/emc-emi-electromagnetic-interference-compatibility/how-to-resolve-normal-common-mode-emi-noise.php

FCC 47 CFR Part 15: FCC Part 15 Basics

https://www.electronics-notes.com/articles/analogue_circuits/emc-emi-electromagnetic-interference-compatibility/fcc-47-cfr-part-15.php


How Common Mode Chokes work

http://www.we-online.com/web/en/passive_components_custom_magnetics/blog_pbcm/blog_detail_electronics_in_action_61439.php