[Elecraft] Winding my first toroid on my K2 kit

paolo gramigna paolo.gramigna at controllo.it
Mon Sep 25 07:44:45 EDT 2006


Hi all,

I'm arrived at page 53 of the manual, and I'm making my first toroid. I
followed the instructions, and then out of curiosity I tried to measure the
inductance, using my old HP 4260A. I know that I'm not supposed to match the
indicated inductance, and that I should stick to the published turns count;
in fact I was just willing to give a try to the HP 4260A, the least used
instrument in my lab.

Well, it ended up indicating a value of 160 uH, not 18 uH as supposed. So I
tried to measure the value on another bridge I had there by chance, and
ended up with a very similar value.

So I tried the HP 4260A on the solenoidal RFC (the green bodied) and I found
values very similar to what I expected.

I know that i'm doing something wrong, but I cannot understand what's my
mistake....

Cheers,

IK4YNG Paolo




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