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Re: mathematics


From: 	John H. Couture[SMTP:couturejh-at-worldnet.att-dot-net]
Sent: 	Sunday, September 07, 1997 8:20 PM
To: 	Tesla List
Subject: 	Re: mathematics

  To All -

  Most of the books written after the 1930's have to do with high voltage
low frequency power systems because these systems were growing in size.
Direct application of this information is not only very theoretical but
difficult to apply to Tesla coils. However, there are other ways to approach
the problem.

  It should be noted that if you have a spreedsheet/ graph program like
Borland's Quattro Pro you can solve and plot second order differential
equations (and much more) easily using these programs. No calcs are required
because the program does everything. The plots of the various curves are
interesting to study. However, you will have to review engineering math to
do the necessary spreadsheet setups. Another good program I use is
Borland's Eureka equation solver. I have no connections to Borland. 

  This is not a Tesla coil subject so I will stop here.

  John Couture

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At 11:12 PM 9/6/97 +0000, you wrote:
>
>From: 	Geoffrey Schecht[SMTP:geoffs-at-onr-dot-com]
>Sent: 	Saturday, September 06, 1997 10:04 AM
>To: 	Tesla List
>Subject: 	Re: mathematics
>
>I have a book from the 1950's ("High Voltage Laboratory Technique" by
>Craggs & Meek) that has a pretty theoretical treatment on Tesla coils. If
>you can wade through a set of coupled, second-order integro-differential
>equations; I can scan it in and post it in PDF format. The authors were
>kind enough to reduce these equations to a useable form so if you have a
>decent programmable calculator, Mathematica, or any programming language at
>your disposal; you're set.
>
>The entire book is pretty interesting, actually, and I found several other
>books on the subject of HV engineering at my company's library (Van De
>Graf's, Marx generators, high powered impulse systems and the like). I
>don't want to break any copyright laws but most of that stuff is probably
>too old to worry about (I hope so, anyway). I can scan and PDF whatever
>people would like (time permitting of course!).
>
>I've also got a copy of Curtis' book on High Frequency Apparatus from the
>1920's. It's a lot less theoretical than the other books but it's got some
>really cool construction projects. I'd like to archive the whole thing in
>PDF format but it needs a lot of facelifting to get it into an OCR-able
>format. Photoshop's good for that. Someday, it would be nice to put the
>whole thing on CD-ROM.
>
>Scanners....the plagarist's number-one business tool!
>
>Geoff Schecht
>
>
>> 
>> 
>> From: 	Kevin[SMTP:wawa-at-spectra-dot-net]
>> Reply To: 	wawa-at-spectra-dot-net
>> Sent: 	Friday, September 05, 1997 10:54 PM
>> To: 	tesla-at-pupman-dot-com
>> Subject: 	mathematics
>> 
>> Now that I have a functioning coil, I would like to begin to read in on
>> the theory and especially the mathematics.  Is there a single good book
>> that can help me, or maybe a few?  I tried the library but found nothing
>> about coils.  I am probably going to try the local university next.
>> 
>> Also, would anyone happen to know a formula for calculating the
>> inductance of a choke, taking into account the form shape and size, the
>> wire gauge, and the number of turns?
>> 
>> thanks,
>> kevin