Strongly recommended · for some experience
#84: Basics of Ferrite Beads: Filters, EMI Suppression, Parasitic oscillation suppression / Tutorial
Why people recommend it
Demonstrates how ferrite beads filter high-frequency noise, suppress EMI and damp parasitic oscillation; praised for clear demonstrations, though some find it long.
In their words
W2AEW has an excellent demonstration video showing the effect and purpose of ferrites at
JYelton on electronics.stackexchange.com, Jul 2013. CC BY-SA.
And here's a YouTube video (rather long-winded, maybe more than you want to know) that explains how they work.
Seamus on raspberrypi.stackexchange.com, Jun 2018. CC BY-SA.
