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Re: Secondary size
Brian -
"it didn't work at all". "put on a heck of a show". This is a typical
result from Tesla coils when all of the parameters are not coordinated. The
advantage of a computer program coordinating all of the parameters is that
it will prevent disastrous results.
John Couture
-------------------------
At 07:01 AM 10/20/98 -0600, you wrote:
>Original Poster: bhelms-at-dialpoint-dot-net (Brian Helms)
>
>I built a secondary that was 500 turns of #22 enameled wire on a 8 inch form
>and it didn't work at all. I couldn't insulate between turns enough to keep
>it from arcing from top to bottom and all around on the secondary. It did
>put on a heck of a show before it started smoking though.
>
>Brian Helms
>(KD4RLD)
>
>-----Original Message-----
>From: Tesla List <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
>Date: Saturday, October 17, 1998 6:26 PM
>Subject: Re: Secondary size
>
>
>>Original Poster: Hollmike-at-aol-dot-com
>>
>>In a message dated 10/16/98 5:49:53 AM Mountain Standard Time,
>>tesla-at-pupman-dot-com writes:
>>
>>> Knowing this length you can design a
>>> secondary coil that will give you the maximum inductance without
>>> overloading the power transformer.
>>John C.,
>> Based on the Wheeler equation, the maximum inductance of a coil with a
>>given length of wire occurs when the radius/winding length is 1.1111(or
>10/9).
>>That would produce a very short, fat coil that would not necessarily be the
>>best geometry for a TC secondary. Tesla did use coils that were relatively
>>short, with a large radius, but I believe he found it necessary to space
>wind
>>the coils to prevent excessive voltage stresses between the turns.
>> Has anyone built a coil with such a geometry? If so, how did it work?
>>MIke
>>
>>
>>
>
>
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