Re: Bi Polar coil

To: tesla-at-pupman-dot-com
Subject: Re: Bi Polar coil
From: Esondrmn-at-aol-dot-com
Date: Mon, 25 Nov 1996 18:40:09 -0500

In a message dated 96-11-23 18:36:42 EST, you write:

<<   >>
 > Stephen,
 > 
 > You want to build the secondary to whatever dimensions you want, then
 > calculate its resonant frequency with whatever terminals you will use on
the
 > ends.  Then calculate the primary coil and capacitor using 1/2 of the
 > secondary frequency.  It is basically two 1/4 helical resonators driven at
 > the center with no ground refrence to the secondary.
 > 
 > Ed Sonderman
 
 
 Sounds good Ed, except I think the primary coil/cap may need to be
 calculated at 2X the secondary's (full-length) natural frequency.
 However, I haven't built one of these yet so I don't know for sure...
 
 Safe coilin' to ya!
 
 -- Bert --
  >>

Bert,

I agree, it does make more sense.  If the whole secondary would be resonant
at say 200 khz then each half would be resonant at 400 khz.  Good catch, I
must be sleepy.  Too many days without power.

Ed Sonderman