RE: Primary Heating

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Peter Lawrence by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Peter.Lawrence-at-Sun-dot-com>

Guys,
     hot air convection will tend flow up along the secondary, drawing air
from near the inner primary turns which in turn draws air from the outer
primary turns. Thus the outer turns are cooled by convection and the inner
turns are heated by convection.

just a theory, your milage may vary,
Peter Lawrence.




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>Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
<Gary.Lau-at-compaq-dot-com>
>
>
>Forgot to mention, I've observed the inner-turn-only heating both on my
>"normal" flat primary, and also on my two-layer primary, where the top &
>bottom spirals are joined in the center, with fuse-clip connections to the
>outer ends.  See http://www.laushaus-dot-com/tesla/primary.htm.  Once again,
>only the inner turns became warm.
>
>Gary Lau
>MA, USA
>
>My innermost primary connection is by means of a very beefy copper strap,
>securely soldered to the end of the tubing, and the connection to the strap
>~ 2" distant by means of a 1/4" bolt.  The outermost primary connection is
>the movable tap, and this by means of two fuseholder clips.  This is where
>I'd expect to see ohmic heating, but do not.
>
>Gary Lau
>MA, USA
>
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