Re: Choosing a ferrite bead

David Harmon wrote: 
...

Yes, it is exactly a choke.  However, if it is laying on the ground
plane then it is a capacitor, right?



Hm. I'm not an rf type, but I distinctly remember my lead engineer in the 70's, who was an rf type, telling me that ferrite beads were predominantly lossy, so acted more to increase trace resistance than like chokes. That's why he could get about as much effect from tacking one on top of the trace as he could cutting the trace and running it (a connecting wire, actually) through the bead, as I wanted to.

Am I misremembering, or are things different now, or...?

John Perry
.

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