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Re: Keeping up with the theory (was is Corum and Corumforbidden topic?)

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi Ray,

For curve fitted equations, the big data base below should be very useful!


Paul has done this for bare coils at:




At 11:59 PM 5/5/2002 -0700, you wrote: 

> No one, so far, has convinced me that a project to come up with a general
> equation
> for the calculation of parasitic capacitance of a solenoid would not be worth
> while.  The 
> limitation on precision and accuracy should be the ability to readily measure
> dimensions
> and not on the math.  Any such equation, set of equations, or procedure
> should be usable
> by any one on the list who has a computer.  Why any one building a coil would
> want to do so is beyond me.  It seems to be a mountain that is there and  has
> not been climbed.
> This seems to be getting a bit far from coiling,  I would be glad to continue
> this
> discussion off list.
> Best
> Ray
> Tesla list wrote:
>> Original poster: "Ed Phillips by way of Terry Fritz
>> <mailto:twftesla-at-qwest-dot-net><twftesla-at-qwest-dot-net>"
>>> I am intrigued by your statement regarding Maxwell's equations.  Do you
>>> think they are amenable to numerical analysis?  That should make them
>>> programmable on the average desk top.  Can I volunteer you for the project
>>> or would you prefer working on the spark gap?  Me?  I don't have the
>>> skills. Best Ray 
>>         There are many different commercial programs which let you put
in all
>> of the boundary conditions and then solve for whatever you want - electric
>> fields, magnetic fields, current flows, etc.  Some are pretty expensive.  I
>> suspect there are some free ones too, but have never looked for them.  There
>> are other modern analytical tools which accomplish similar results.  I'm not
>> aware of any that can handle such non-linear programs as spark gap
>> breakdown, but there may well be. Ed