Re: Fanciful spark-augmenter

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Kennan C Herrick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <kcha1-at-juno-dot-com>

I reply to myself:  It is often true that the older one gets, the slower
one's thought-processes become.  That has happened here.

The simplest way to shift the frequency of a tuned L-C circuit is to
place a smaller capacitor across the existing one.  A small shift is what
I propose and that is the way I should have proposed to do it.

Take a conventional primary-type L-C apparatus.  Place across the C
another C of 1/10 the capacitance and the same voltage rating, in series
with merely a wimpy little spark gap.

Excite the tank from a s.s. source.  OR: A VTTC source!  Sorry I've left
the VT folks out of this!

When the wimpy gap fires, the frequency instantly shifts 10% or so and
the vast amount of built-up energy gets dumped into the secondary--just
like in a conventional spark-gap system.

Someone go for it!

Why didn't I apply...*kick*...for a PATENT on this...*kick, kick*...??

Ken Herrick

On Wed, 30 May 2001 17:21:13 -0600 "Tesla list" <tesla-at-pupman-dot-com>
writes:
> Original poster: "Kennan C Herrick by way of Terry Fritz 
> <twftesla-at-qwest-dot-net>" <kcha1-at-juno-dot-com>
> 
> In my interchange with Scott Fulks yesterday on the subject, there
> remained a question about the Q of my fanciful apparatus.  I made a 
> quick
> measurement today:
> 
> I wound 5T of 12 ga house-wire around a 12" dia form, connected a 
> fixed
> capacitor across it, excited it with a 1T loosely-coupled coil from 
> a
> signal generator, and measured its Q using the Fr/(F(hi)-F(lo)) 
> formula. 
> With a .03 uF capacitor the Q was ~18 and with a .07 uF one, 16:
> essentially the same.
> 
> Not too near the Q of a good secondary, to be sure, but maybe good
> enough.  If excited with--say--my primary where I develop perhaps 
> 300
> volts/turn of equivalent conductor, I should think I could pump up 
> such a
> resonant tank to perhaps 3000 volts/turn.  At 5 turns, I would get 
> 15 KV.
>  That's a fairly respectable capacitor-charge that subsequently 
> might be
> dumped into the secondary at the slightly-shifted Fr.
> 
> Ken Herrick
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