----- Original Message -----
From: "Steve Thompson" <g8gsq@qsl.net>
To: <amps@contesting.com>
Sent: Friday, October 04, 2002 3:41 PM
Subject: Re: [Amps] skin effect
>
> ----- Original Message -----
> From: Joseph DiPietro <n2uf@joeham.net>
> To: <amps@contesting.com>
> Sent: 04 October 2002 20:23
> Subject: Re: [Amps] skin effect
>
>
> > Steve,
> >
> > The advantage of regular stranded wire is flexability.
> > Litz wire is a special type of stranded wire that is used to reduce skin
> > effect. **Ok thanks.
> The longwave guys certainly love it - the key point is that the strands
are
> insulated from each other. **Insulated---ok, this is starting to make
some sense.
>
> A lot of stranded wire is multiple cores of tinned copper - skin effect
> means that, at hf upwards, the rf current flows in the tin plating which
is
> relatively lossy. You'd need to be sure that people were comparing like
> wires. **I'm not sure what some of them are comparing. hi hi **Ok on
the tin being lossier than copper, but tin or copper regular stranded [not
litz] has no advantage as to skin effect over same gauge solid tin or copper
? Is this right?
Once, and only once, I designed a low pass filter specifying tinned
> wire to save cost compared with preparing enamelled copper. After a few
> months of equipment in the field, I had a lot of rework to do... **Darn
the details!
>
> Steve
Steve wd0ct
>
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