Re: Top Load

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Krohns" <2halice@xxxxxxx>

Hey D.C.,

This is Hal in Tucson.  I finally fired my 4" coil last night for the 
first time.  It did quite well.  I'll have video on my site later today.

I followed your advise and placed my toroid 2.5" above the last 
winding. Will raising it as much as 4" change the capacitance of the 
toroid or will it change the resonant frequency of the secondary or both?

Hal in Tucson


----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Sunday, July 02, 2006 11:02 AM
Subject: Re: Top Load


> Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>
>
>
>
> 2.5 to 4 inches measured from bottom of toroid to the last sec 
> winding works good with small coils.  With large toroids above 30 
> inches dia., more shielding, we usually go 12-14 inches above last sec turn.
>
> Dr. Resonance
> ----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Sunday, July 02, 2006 10:04 AM
> Subject: Top Load
>
>
> > Original poster: "Rich & DJ" <rdj@xxxxxxxxxxxx>
> >
> > I have a question on the normal location of a top load. My new coil 
> > will max out at 13Kv .150ma , secondary is 6.5/8 dia , is there a 
> > standard starting point for the top load?  I see pictures of other 
> > coils, some show it several inches above the top of the secondary 
> > winding , others are quite low with the lower part of the top load 
> > below the plane of the upper winding of the secondary.
> > Any suggestions on a starting point ?
> >
> >             Rich , from the middle of Missouri