Re: A Puzzle
From: Greg Leyh[SMTP:lod-at-pacbell-dot-net]
Sent: Friday, September 05, 1997 1:28 PM
To: Tesla List
Subject: Re: A Puzzle
Richard Wayne Wall wrote:
> Incidently, Van deGraf generators
> produce exceedingly low current discharges. (Actually, TC discharges
> are much like Van deGraf discharges, ie., very low current.) As we all
> understand, voltage in a tuned quarter wave resonator reaches its
> practical maximum and current approaches zero in the limit at the top
Are you referring to 'arrested streamers' or discharges to ground?
In the case of ground discharges from a Van De Graaf, I have measured
current impulses in excess of 1500A, which caused me no end of trouble
with nearby sensitive instruments.
Regarding the current impulses in the base stem of _arrested_ streamers,
I believe that Bert's suggestions of 1 to 10A are in the ballpark,
probably with time structures of <10uS. With a bit of luck (and a
Fluke ScopeMeter), perhaps I'll catch a waveform or two.