Re: primary angle

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Daniel,

The coupling is determined by the proximity of the coils. All primary 
configurations (flat, cone, helix) work fine if geometrically built 
to provide suitable coupling. Flat primary's are easy to build and 
are the least sensitive to build errors (human errors due to not 
thinking everything through). Low angle conical coils are also pretty 
tame. As the angle is increased, the coil may become very sensitive 
to coupling depending on the distance from the secondary. Keep in 
mind that all primary configurations can also be built so that you 
never reach a desired coupling value. These days, it's just easy to 
calc the configuration keeping in mind standoff voltage and coupling. 
I know some primary's are preferred due to cosmetics and is sometimes 
the driving force in the choice.

I like to think of coupling as analogous to sitting in front of a 
campfire. There's a distance at which the heat is "comfortable". 
Anything else is too hot or too cold. This is true for the little guy 
or the big guy. They both have their own "setting".

Take care,
Bart

Tesla list wrote:

> Original poster: "Langer Giv'r" <transworldsnowboarding19@xxxxxxxxxxx>
>
> Hi, does the angle of the primary affect the coupling?  I have my 
> primary set at 40 degrees to horizontal becuase it was the easyest 
> to wind that way.  What should I do if angle is to high? thanks for input
>
> Daniel From Canada
>
> _