HW Interview
PC-03 · Chapter 1 · Passives & Components

Ferrite bead selection

How do you choose a ferrite bead for a power rail filter? What goes wrong if you pick by the rated current?

Level●● onsite technical
TrackGeneral board
Really testingKnowing that bead impedance collapses with DC bias and that beads can create resonances.
Full worked answer: in the book, page 16 — what to say first, how to explain it, the numbers worth quoting and the follow-ups. About the book →

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