Re: Flat Ribbon Primary Inductance Calculation (fwd)

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---------- Forwarded message ----------
Date: Mon, 14 May 2007 17:25:40 +0200
From: Kurt Schraner <k.schraner@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Flat Ribbon Primary Inductance Calculation (fwd)

Hi Bart,

thank you very much for estimating my efforts (and taking for serious), 
regarding the difference of flat ribbon primaries vs. round wire coils, and 
making the calculations avaliable within your extremely excellent suite of 
programs to our coiler society.

Have a good time, and best regards

Kurt

PS: hope, Gerry Reynolds, our "friendly list moderator" is OK, and will soon 
be here again.

> Date: Mon, 14 May 2007 00:04:53 -0700
> From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Flat Ribbon Primary Inductance Calculation
>
> Hi All,
>
> Today I threw together another javascript design tool to find the
> inductance for Flat Ribbon Coils (and yes it's quite different than
> round wire of the same thickness, pitch, etc..).
> http://www.classictesla.com/java/flatribbon/flatribbon.html
>
> I began with Grovers calculations and interpolations. I also looked at
> what Kurt Schraner had discovered in the Circular of the Bureau of
> Standards No. 74. Both Kurts and Grovers results were nearly identical
> (and a good crosscheck on Kurts calculations). Grovers calculations
> required 4 tables of lookup constants which was far more tedious than
> Kurts calculations. I therefore used Kurts discovered calculation as
> it was far easier to implement.
>
> And of course the program handles both metric and inches.
>
> Hope you find it useful in the future. The link is on my main page
> under "Javascript Design Tools".
>
> I'd like to thank Kurt Schraner for researching and putting together
> this calculation in an Excel spreadsheet for Flat Ribbon Coils. Very
> useful tool and well thought out.
> http://home.datacomm.ch/k.schraner/FlatRibbonCoil.zip
>
> Take care,
> Bart