Re: Flat Ribbon Primary Inductance Calculation (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Tue, 15 May 2007 17:34:06 -0700
From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Flat Ribbon Primary Inductance Calculation (fwd)

Hi Tim,

I'm not having that problem at all. I can change any input cell after 
calculating. When I hit calculate, everything is recalc'd from the new 
values. Maybe it's a browser thing. Which browser are you using? I'm 
using IE6.

Reply off list. No need to go over these kind of issues here.

Take care,
Bart

Tesla list wrote:

>Original poster: List moderator <mod1@xxxxxxxxxx>
>
>
>
>---------- Forwarded message ----------
>Date: Mon, 14 May 2007 18:05:57 -0700 (PDT)
>From: Tim S <stm800@xxxxxxxxxxx>
>To: Tesla list <tesla@xxxxxxxxxx>
>Subject: Re: Flat Ribbon Primary Inductance Calculation (fwd)
>
>i noticed a minor flaw in the program
>  if i enter my dimensions in inch measurements,
>  at least is what i did do,
>  click compute, it gives me an answer.fairly correct answer i admit is great.
>   
>  if i change a value ,say the pitch,,without resettting all the values back to nothing.
>  the program continues to compute from some of the last variables.
>   
>  it caught me the first 3 times i tried it.
>  then i realised what was going on.
>   
>  but not bad of a program.
>  maybe i could add some data someday on bifilar wound wound types like this.
>   
>  i have wound some lately and past 3 years...
>   
>  tim
>
>Tesla list <tesla@xxxxxxxxxx> wrote:
>  Original poster: List moderator 
>
>
>
>---------- Forwarded message ----------
>Date: Mon, 14 May 2007 17:25:40 +0200
>From: Kurt Schraner 
>To: Tesla list 
>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 
>>To: Tesla list 
>>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 
>>    
>>
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