Re: [TCML] poor preformance

[Carl Noggle <cn@xxxxx>]

Sounds like your frequency is too high, by a factor of about two.  You could
     a)  cut off the top half of your secondary (bad plan)
     b)  double your primary capacitor (much better plan).

My first coil was a tube type from plans I ordered from PS magazine.  
The secondary was 1 1/4" diameter and about 30 inches high.  I got a 1" 
spark from the top, no spark at the 2/3 point, and 1 1/2 " spark at the 
1/3 height point.  In this case I should have sawed off the top 2/3 of 
my secondary, although tripling the pri cap would have been a big help.  
Alas, my knowledge at the time was not up to such a decision.  When 
people publish plans they should try them out first.

If you had a very high secondary, you would notice several maxima and 
minima as the voltage distribution is sinusoidal.  You want only the 
first quarter of the sine.

---Carl



> I'm just wondering if anyone has any ideas how I can go about looking 
> for performance issues.
>
> Currently, I get a very weak and faint spark off my top load of less 
> than 1/4", but I can draw 4" sparks of the middle of the middle of the 
> secondary.
>
> The coil specs are as follows:
> 7Kv5 NST @ 30ma
> 630pF main cap
> Static spark gap
> 7 turns of 12ga primary coil
>
> 2' 3"od secondary with 18ga wire
> 8" sphere top load
>
> Video at http://moseley.ca/tesla.avi
>
> _______________________________________________
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> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla

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