Re:Re Question on DF-DRSSTC

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "James Zimmerschied" <zimtesla@xxxxxxx>

Terry and Steve,
thanks for the information. The existing secondary I am intending to 
use ( 4" x 13" x #28 wire) has a resonant frequency of 170 kHz with a 
20" top load. This is a little higher than Terry's 120 kHz secondary 
but I think I will try to use it vs winding another coil.
Jim Zimmerschied
----- Original Message -----
From: <mailto:tesla@xxxxxxxxxx>Tesla list
To: <mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx
Sent: Thursday, December 22, 2005 1:03 PM
Subject: Re: Question on DF-DRSSTC

Original poster: Terry Fritz 
<<mailto:vardin@xxxxxxxxxxxxxxxxxxxxxxx>vardin@twfpowerelectronicscom>

Hi,

At 11:10 PM 12/21/2005, you wrote:
>Teryy,
>I am starting to put together a DF-DRSSTC based on your design.

Cool!

>I would like to know why you are using a flat primary with evidently
>a low coupling as compared to other DRSSTC's which seem to be using
>helical primaries and higher coupling?

I just used a primary I already had.  Simple as that...  The coupling
is like 0.17 so it is not bad at all.  If you are making a whole new
coil and everything, feel free to make the primary a cone if you
wish.  This program finds the coupling:

<http://hot-streamer.com/TeslaCoils/Programs/MANDKV31.ZIP>http://hot-streamer.com/TeslaCoils/Programs/MANDKV31.ZIP

http://hot-streamer.com/TeslaCoils/Programs/MANDKV31.PDF

>
>Also, what are the characteristics on your secondary?

<http://drsstc.com/~terrell/notes/DRSSTCspecifications.pdf>http://drsstc.com/~terrell/notes/DRSSTCspecifications.pdf

Most of these specs are for my regular DRSSTC, but the secondary is the same.

Cheers,

         Terry


>
>Thanks
>Jim Zimmerschied