Airy R. Bean wrote:
Perhaps he is referring to the ferrite doughnuts - toroids -
that are used in tuned circuits to restrain the magnetic field
to the environs of the toroid?

"Michael Black" wrote in message
...

Hans-Marc Olsen ) writes:

I heard this is possible.Is that true?

This guys a troll, in case people haven't noticed his similar
junk posts in other newsgroups.



Winding toriod coils around a doughnut is about on par
with what one Heathkit builder did when he ran out
of insulating spaggati tubing....he used macroni!
(TRUE STORY as told by some Heathkit repair center employees)