[sdiy] newbie bead question

[Jim Patchell]

    Cool Dude!  I love beads....must be a hippie thing from the 60's...


    Seriously...I assume it is a ferrite bead.  It basically makes an inductor,
albeit, a very small inductor.  It is useful for stopping high frequency
currents.

    -Jim


Bob Roesler wrote:

> Hi all,
>
> In a couple if mixer circuits I've looked at from Ken Stone and Tony Allgood
> there is a bead used in series where +/- power enters.
>
> What exactly is a bead, and why is it used? I've looked in the index of The
> Art of Electronics, and find no reference to such a thing. Nor in any other
> publications I have laying about.
>
> Can someone enlighten me here?
>
> Thanks,
> Bob
>