Re: 20 joules at 100 bps vs 4 joules at 500 bps

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Dmitry (father dest)" <dest@xxxxxxxxxxx>

(was sent 04.08.2005)

http://www.filmfatale.org/wpm/faraday.html

"greg stood inside the sphere of the tesla coil with a metal probe,
taking more measurements and logging the results. as i watched this
behemoth of electricity and the man inside, i was only sure of one
thing... this guy must be abso-*******-lutely insane".

so hello, Greg %-)

> Original poster: Greg Leyh <lod@xxxxxxxxxxx>
> >
> >Original poster: "Dmitry (father dest)" <dest@xxxxxxxxxxx>
> >
> >and it seems that sphere protects the secondary worse than toroid:
> >http://www.lod.org/Projects/electrum/testing/pages/electrumeric.html
>
> You're correct --  a toroidal electrode would have provided far
> better field control than the spherical electrode used on
> Electrum.  The spherical electrode geometry was part of the overall
> aesthetic requirement however, and had to be accommodated.  As a
> result, the operating instructions for the machine specify to
> immediately remove power for 5 seconds if a tower strike is observed.
>
>So far, there has been no permanent surface tracking observed in
>Electrum's outer casing.

according to this photo:
http://www.lod.org/Projects/electrum/testing/images/electrum40kW3.jpg
does the secondary outer surfaces in touch with the sphere? but my
toroid would be mounted higher on the secondary top, then, as Antonio
said there wouldn`t be any problems:

"Reduction due to surface tracking  would apply if an insulating surface
were in contact with areas of the terminal where the electric field is
high, but this doesn't happen in  this case."

or it wouldn`t help? then let`s go on :-)

> Based on experience, 5kV/inch seems to be a reasonable surface
> gradient to maintain on the outside of a secondary form.

200kv/m it is in straight way, and if it would be like that:
http://www.lod.org/Status/90L10KPhotos.htm
maybe this value would be more? for example Conner`s 30" secondary
flashes at about 600kv.

-----
I have run coils up to 20KW in residential neighborhoods.  I have
received death threats and have had the police, fire, and department of
water and power all show up at the same time. Screw 'em all.  Keep firin'.
(c) Mark Barton  29-09-95