RE: This don't make sense.

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

Original poster: "Garry Freemyer by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Garry-at-NDFC-dot-com>

Thanks. It was sure strange. I am glad You and Terry got different figures.
I thought something was wrong alright.

Yep, I have a toriod about 8" accross by 2" high. I was looking at this web
site and they wanted me to enter the diameter of the toriod and the chord of
the toriod. I have no idea what a 'Chord' is.

Thanks again.

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Monday, December 11, 2000 4:05 PM
To: tesla-at-pupman-dot-com
Subject: Re: This don't make sense.
Gary,

I ran your numbers through my spreadsheet.  I had to make a few assumptions.

The first is, I assumed you had a toroid on top of the secondary which 
provided 10 pf of capacitance.  Your secondary self resonant frequency is
376 
khz with no toroid and 244 khz with the 10 pf toroid.  Using this 244 khz 
frequency and a .017 ufd cap, the primary would tune at turn 9.6 if the 
inside diameter was 5.5" and was made from # 10 wire with .350" spacing 
between turns.  The tap point would be 9.3 with the same primary made from 
.250" diameter copper tubing.  The tap point would be turn 14 with the
copper 
tubing primary and the .006 ufd cap.

Ed Sonderman