[Elecraft] Toroids

[Phil Wheeler]

I'm not sure how universally applicable this info is, but the following=20
web page:

http://tritium.fis.unb.br/Fis3Exp/fcim.csdc.com/fcimis/compid/ind/toroid.=
html

does have some color coding and properties info.  It might, at least,=20
give that initial clue re properties of some cores.  I have an old=20
Amidon catablog with similar data.

73, Phil

Tom Hammond N=D8SS wrote:

> Trevor Day, G3ZYY, wrote:
>
>> With all the talk about toroids and baluns recently I decided to=20
>> rifle through the junk box looking for suitable cores.  It appears=20
>> that I have plenty of all shapes and sizes but I have no idea of=20
>> their individual properties.  Is there any way of identifying these=20
>> unmarked devices so I can put a few to good use?
>
>
> I agree with Trevor...
>
> It'd certainly be a GREAT idea if someone would/could come up with a=20
> treatise, in layman's terms, and using (more or less) commonly=20
> available equipment, to allow us to better identify the myriad toroids =

> we might have laying around the shack, and for which we have NO CLUE=20
> of their (even approximate) properties. Now THAT would be a worthwhile =

> article.