Tom Rauch wrote:
>The turns are .150 inch wide, and only fill a .68 inch long
>area .278 inches in diameter. Being so wide, it's difficult to count
>the exact turns because the starting and ending points occupy a large
>portion of the diameter where they disappear under the end caps.
>
>It looks like about 4-1/2 more or less turns.
Thanks, Tom.
43.5 nH to 49.3 nH measured; 48.6 nH calculated from the standard
formula for solenoid coils.
Maybe that was lucky, but it seems like the formula is a good place to
start, for those of us without network analyser.
>By the way that
>inductance changes if I place the resistor near any other conductors.
As it would for any type of non-shielded inductor.
73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'
'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.demon.co.uk/g3sek
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|