Re: Tesla Coil toroid Size

To: tesla-at-pupman-dot-com
Subject: Re: Tesla Coil toroid Size
From: "John H. Couture" <couturejh-at-worldnet.att-dot-net> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Wed, 16 Sep 1998 18:58:22 -0600
Approved: terryf-at-verinet-dot-com

  Greg -

  As I mentioned before an increase in spark energy has to show up in the
TC either as an increase in input energy or an increase in efficiency. Do
you know of any way to optimize at the design stage this increase in
efficiency that you mention?

  Zero energy between bangs! Are we talking about the same thing?

  To me a bang starts when the operating gap starts firing. This bang
finishes when the next bang starts. During this period there are many types
of waveforms involved. 

  I am not proposing a "cumulative energy between bangs". However, this
could be another subject to discuss. The extra long spark (extra large
packet of energy) is still unexplained.

  This is why jargon should not be used when discussing Tesla coils. A bang
obviously means different things to different people. What do you call the
time that bangs do not cover during the TC operation?

  John Couture

--------------------------------

At 02:25 AM 9/16/98 -0600, you wrote:
>Original Poster: Greg Leyh <lod-at-pacbell-dot-net> 
>
>John H. Couture wrote:
>
>
>> >There is probably a very good reason why changing the toroid didn't
>> >change coil power - it wasn't effecting a change of BPS and it wasn't
>> >effecting a change of Ep.  -MW
>> 
>>   I think we lost track of the original intent of this post. Which was when
>> the toroid is increased in size AND THE SPARK LENGTHENED what was the
>> increase in the input energy? An increase in spark length means an increase
>> in energy other things being unchanged.  -JHC
>
>The input power does not necessarily have to increase just because 
>the spark got bigger.  The toroid size greatly affects the coil's
>efficiency at producing spark length with a fixed input power level.
>
>
>> >It would be a good idea to get an oscilloscope onto it and see for
>> >yourself regarding the (lack of) cumulative energy with successive
>> >bangs. The evidence is unequivocal.  -MW
>> 
>>   How do you measure the cumulative energy between bangs?  -JHC
>
>You can't, because it's ZERO, ZERO, ZERO!  An oscilloscope 
>and current probe will readily demonstrate that the secondary 
>is quite dead between bangs!  
>It's really important at a fundamental level to understand this
>about pulsed-mode Tesla Coils!  If I am wrong about this, please
>show me a waveform that disproves it!  
>Otherwise, it is very distracting to continue proposing a 
>"cumulative energy between bangs", without offering even a 
>shred of real proof. 
>
>end of rant
>-- 
>
>
>-GL
>www.lod-dot-org
>
>
>
>