TopBand: Re: [AMPS] Non Inductive Resistors

Bill Turner wrt@eskimo.com
Sat, 06 Sep 1997 08:55:16 GMT


WAB00496
Sender: owner-topband@contesting.com
Precedence: bulk
X-List-Info: http://www.contesting.com/topband.html
X-Sponsor: W4AN, KM3T, N5KO & AD1C

On Fri, 05 Sep 1997 13:15:51 EDT, km1h@juno.com (km1h @ juno.com)
wrote:
>>I have been paging thru the new Newark catalog and came across a few
>>interesting items that are "new" to me.

Ohmite 50 and 100W non inductive resistors, including 50 Ohms. The caveat
is that they give an inductance rating!  That would lead me to assume
that they are not  HF RF rated but maybe for LF, audio and switcher
supplies. Anyway the 50W is rated at  0.8uh and the 100W at 1.6uh.
as anyone experimented with these at HF, tuning out the XL, etc. ? The
prices are a reasonable $9.19 and $16.81 respectively. 

<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
I've heard that "non-inductive" resistors are wound with one
esistance element spiraling right handed and a separate one spiraling
left handed.  The idea is the inductance is supposed to cancel, but
the winding is never perfectly symmetrical, so it doesn't.  I don't
know if that's what you've got, but I'd beware of them.

73, Bill W7TI



--
FAQ on WWW:               http://www.contesting.com/topband.html
Submissions:              topband@contesting.com
Administrative requests:  topband-REQUEST@contesting.com
Problems:                 owner-topband@contesting.com