Re: electric strength for "x" cm of "y" material

["Tesla list" <tesla@xxxxxxxxxx>]

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

Hello Steve.

> Original poster: Steve Ward <steve.ward@xxxxxxxxx>

> i used polypropylene in .0625" thick sheets (usually at least a
> 2-sheet thickness between the coils).  No matter what i tried, the
> arcs would simply creep very long distances (2-3 feet at one point)
> along the PP sheet to the primary (sorry, i do not know the actual
> output voltage from the secondary).

so - the problem was not in the insulation breakdown - even at such
small thickness? then it`s cool - i`m not going to face your problem :-)

maybe you should try internal primary too? then you could use end caps
on secondary coil form - maybe they`ll help?

> it sure is
> difficult to keep the corona from forming, especially when the added
> dielectric makes the E-field greater outside of the dielectric!

outside of the dielectric? how it possible? there`s an air and the
conductors outside - why does the field increase outside?

> Good luck with your internal primary, hopefully it will not be a
> source of headaches for you in the future!

thanx, and i wish you luck too - with magnifiers, although i think
it`s possible to achieve similar results with a conventional coil.