Roy Lewallen wrote:
John Popelish wrote:

. . .
I appreciate you taking the time and effort to try to straighten me
out on this, but if there is no magnetic lines broken (whatever that
means) why use a magnetic core? Why wouldn't disks of carbon work
just as well. They are certainly resistive.


But resistive impedance isn't the only characteristic of ferrite. Disks
of carbon won't work because they have a relative permeability of one.

I know that. I wanted to see if Richard does.

(snip)

You'll learn a lot by reading the information in the Fair-Rite catalog,
available at their web site.
(snip)

I have a hard copy right beside me, and refer to it often.