Re: Official air breakdown voltage?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "JT Bowles" <jasotb@xxxxxxxxxxx>

Carlos said:
"The 30 kV/cm figure for initial breakdown is valid for at least 300
MHz.(At least, this is what my "Reference Data for Radio Engineers"
says.)

*Well, my coil resonates at i dont know...
My unloaded secondary is 240KHZ. With toroid....i have no clue



> From: "Tesla list" <tesla@xxxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: Re: Official air breakdown voltage?
> Date: Sat, 26 Nov 2005 13:55:08 -0700
>
> Original poster: "Antonio Carlos M. de Queiroz" <acmdq@xxxxxxxxxx>
>
> Tesla list wrote:
> > Original poster: Ed Phillips <evp@xxxxxxxxxxx>
> > It is common sense that air pressure, humididty, current, and time 
> > of day all affect air breakdown voltage, but:
> > IS there any official way to determine exactly what air breakdown 
> > voltage is? ( such as KV/distance ) "
> >    Use spheres as terminals at both ends of the spark and use 
> > tables of spark distance vs voltage as a function of the radii of the spheres.
> > These are usually for low frequencies or DC of course.
>
> The 30 kV/cm figure for initial breakdown is valid for at least 300 MHz.
> (At least, this is what my "Reference Data for Radio Engineers" says.)
>
> Antonio Carlos M. de Queiroz