I have not used ferrite beads before and I am trying to figur out where I need them on a new PCB I want to start to sell (in the EU).
I think I understand the concept of the beads, but I am a bit confused to exactly where they need to go on my prototype and how many I need.
I have put one on all VCC input lines on all the ICs together with an capacitor.
the I have about 20 I/O to the outside world for diffrent external components like power LED, DC motor, on off switch etc.
But its starting to be alot of beads.. Maybe I don´t need so many?..or maybe I do..
So..help a fella out.. any tumb rules for where exactly I should put them? what is prioritized? where can I skip? datalines? powerlines? I/O?