Re: Fw: frequency (fwd)

To: tesla-at-pupman-dot-com
Subject: Re: Fw: frequency (fwd)
From: "LWRobertson" <LWRobertson-at-email.msn-dot-com> (by way of Terry Fritz <twf-at-verinet-dot-com>)
Date: Mon, 26 Apr 1999 11:35:17 -0600
Approved: twf-at-verinet-dot-com

Hi ...

I had a N x M rotary gap hooked up that would
give in excess of 800 BPS one time on a DC
circuit. After about 750 BPS the spark changed
radically from quite an intense disruptive discharge,
to a much shorter but more continuous and musical
sounding sort of flame-like arc. At the time I thought
it must be emulating a CW coil, but the rotary was
in no way sync'd to the coil frequency. Maybe the
arc was starting to conduct continuosly a la Jacob's
ladder.

LR


> Marconi actually used such a system in some of his early high-power
>transmitters working in the region of 20 kHz.  The rotary spark gap had
>a multiplicity of small electrodes, WITH ONE SPARK PER CYCLE OF THE RF,
>and rotated at very high speeds.
>