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.
>Has 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
resistance 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
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