Re: Primary Resonant Frequency question . . .

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

Original poster: "tesla by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla-at-paradise-dot-net.nz>

Hi Dan
If I understood your post correctly you are actually using 0.0275uF but have
entered 0.0106uF into the calculating program.
This being the case try telling the program the actual value of Cp and I
think you will find that you can get a tune within the primary you have.

Rgds
Ted L in NZ
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, August 18, 2002 5:24 PM
Subject: Primary Resonant Frequency question . . .


> Original poster: "Daniel McCauley by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>
>
> Quick question:
>
> I've measured the resonant frequency of my secondary / toroid assembly and
> it turns out to be 195 kHz which is much lower than what i calculated in
my
> designs.  Using tesla coil cad program, it says with my current primary, i
> should be tapped between turn 13 and 14 using a NST of 15kv/60mA, a
0.0106uF
> capacitor at 195kHz.  Basically, this says i'm screwed, because in my
> original calculations the resonant frequency was around 225kHz and needed
to
> be tapped between turn 10 and 11.  I'm screwed because i only have 12
turns
> (oops . . . ) of my primary.
>
> My question, is that I'm using a SRSG with a LTR capacitor of 0.0275uF
> instead of the 0.0106uF.  Does this change my resonant frequency
> calculations at all????
>
> Also, other than changing my topload, re-doing my primary, is there any
> other way to increase the resonant frequency of my secondary assembly???
>
> Thanks again.
>
> Dan
>
>
>
>
>