Re: [TCML] primary tubing

[DC Cox <resonance@xxxxxxxxxxxx>]

At RF frequencies aluminum is a poor conductor as compared to copper.  Use
copper for HF applications.  Alum will limit your peak RF current, something
you don't want to do.  Peak RF current determines peak magnetic field which
of course links all your power into the sec inductor.

Dr. Resonance




On Fri, Nov 6, 2009 at 5:25 AM, Neal Namowicz <neal@xxxxxxxxxxxxxxxx> wrote:

> Hi guys,
>
> A quick question re: materials for primaries. I realize that copper tubing
> is kind of the standard for winding primaries. However, while checking out
> the boilers at work it occured to me that a lot of aluminum tubing is used
> for gas valve vent lines, etc., and I was wondering if anyone has ever tried
> it on a primary. From a cost standpoint it's much cheaper, so is there any
> reason to not use it for a primary?
>
> On another note, I liked that sign, too! I should've had that up on my
> front porch on Halloween. I sat out there with my coil, trying to scare the
> little buggers as they came up for candy. Gotta say, for most of them, their
> desire for sugar overcame any qualms about getting closer (still well out of
> reach, though) to the coil. Come spring, I hope my wife doesn't mind the
> grounding rod sticking up from the middle of her flower bed. Ah, she'll get
> over it!
>
> Thanks for your thoughts on the tubing,
>
> Neal.
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla