Re: Refining 10kv -at- 23ma

To: tesla-at-poodle.pupman-dot-com
Subject: Re: Refining 10kv -at- 23ma
From: Tesla List <tesla-at-stic-dot-net>
Date: Mon, 26 May 1997 23:24:50 -0500
Approved: tesla-at-stic-dot-net

Subject:  Re: Refining 10kv -at- 23ma
  Date:  Mon, 26 May 1997 11:41:04 -0400 (EDT)
  From: FutureT-at-aol-dot-com
    To: tesla-at-pupman-dot-com

> John, sorry to jump into your conversation but I was wondering.
> How did you calculate your capacitance, my resources say 
>you should be using several times that capacitance for your
>oil-burner trans. I say this because I also am using oil burner
>trans for my small coil, and wonder if I am off to much
 >in my figures. One OBIT = about .006uF in my calcs and 
>two OBIT's (what I use) need about .012uF although I have 
>found that with two OBIT's, I have some really weird effects 
>happening when I switch from .006 and .012 - but both 
>discharge about the same after retuning.

> T Stewart
  >>

T.S.

Yes, I did use a value that is lower than the calculated value for 
the OBIT.  I tried higher value capacitors but got poorer results, 
I'm not sure why, but probably because my spark gap was really poor, 
making the quenching poor also. 
Using the smaller cap, my cap fired multiple times during each 60 Hz
half cycle, so my spark grew more because of high "break-rate", than
due to "big bang" of each firing.  I never bothered installing a better 
spark gap onto the TC.

If the capacitor is too large, TC will not fire on every 60 Hz half
cycle, 
and will produce a slower than  normal, "motorboating" sound because
the cap will take longer than one half cycle to reach the breakdown
voltage
-- resonant charging is allowing the voltage to build up over each half
cycle
until gap fires.

John Freau