[sdiy] newbie bead question

[René Schmitz]

A bead is a small toroid ferrite core. When you let a wire go thru that it 
forms an inductance. The idea here is to get rid of high frequency 
dirt of the power supply.

Cheers,
 René


At 09:23 20.05.02 -0700, 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
> 
>
>
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