Re: Subject: Re: Current Distribution in inductors (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 10 Oct 2007 19:33:52 -0700
From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Subject: Re: Current Distribution in inductors (fwd)

Hi Ed,

Yes, I was surprised by the relatively low frequency as well when I 
first went through the it. It may have to do with the huge area in rails 
as what we are use to comparing (wires #24 to #16). I suspected skin 
depths to be cause of surprise in rails. Kind of a different animal 
(complex shape and size of rails vs. our nice small cylindrical conductors).

Take care,
Bart

Tesla list wrote:
> ---------- Forwarded message ----------
> Date: Tue, 09 Oct 2007 17:20:57 -0700
> From: Ed Phillips <evp@xxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Subject: Re: Current Distribution in inductors (fwd)
>
> There are numerous studies regarding changes frequency dependent 
> inductance and impedance in every field imaginable. I ran across one the 
> other day which I thought was interesting. It is a paper regarding the 
> frequency dependence impedance for the TRTS Power Rail system. Within 
> this paper, the discussion regarding frequency dependent inductance is 
> also shown. It's just one example. Anyway, interesting read.
> http://nr.stpi.org.tw/ejournal/ProceedingA/v23n3/419-428.pdf
>
> Take care,
> Bart"
>
> 	Interesting paper.  The current density plots are a great surprise - my intuition would never have expected such large effects at such low frequencies, even for structures as large as their rails.
>
> Ed
>
>
>
>
>
>
>
>