Re: New AVI

To: tesla-at-pupman-dot-com
Subject: Re: New AVI
From: Bert Hickman <bert.hickman-at-aquila-dot-com>
Date: Mon, 03 Feb 1997 06:58:39 -0800
Subscriber: bert.hickman-at-aquila-dot-com Mon Feb 3 21:30:38 1997
Tesla List wrote:
> 
> Subscriber: knardell-at-mailhost.accesscom-dot-net Sun Feb  2 17:37:51 1997
> Date: Sun, 02 Feb 1997 02:12:23 -0600
> From: Kevin Nardelle <knardell-at-mailhost.accesscom-dot-net>
> To: mhammer-at-misslink-dot-net
> Cc: tesla-at-pupman-dot-com
> Subject: New AVI
> 
> Here is a sorta lame AVI of the TC since building the new gap, once again I
> had to limit power seriously to prevent the computer from locking up. NOTE,
> I did get knocked off line. This should give you an idea of what I am
> dealing with as far as RFI, look at all of it in the video.
> 
> Let me know what you think.
> 
>   [Part 2, Application/MAC-BINHEX40  307KB]
>   [Unable to print this part]
> 
>   [ Part 3: "Attached Text" ]
> 
>                                        Regards,
>                                             Kevin Nardelle
> 
>    ********************************************
>    * T   E   S   L   A      C   O   I   L   S *
>    ********************************************
> Kevin Nardelle   knardell-at-accesscom-dot-net
> My main web page IS UP all TESLA
> related with lotsa pictures and links.
> http://www.icorp-dot-net/users/kev/tesla
> http://www.accesscom-dot-net/nardell
> Non related sites I have
> The Louisiana Swamps Online (Under construction)
> http://www.icorp-dot-net/users/kev
> **********************************************
> 
>                                    Name: kevtc4b.avi
>                     Part 1.2       Type: video/avi
>                                Encoding: x-uuencode

Kevin,

Looks like the coil is beginning to operate more efficiently, and is
putting out more power. How long is the wire going from your secondary
to the ground rods? This needs to be as short as possible, and fairly
heavy gauge wire (#6 solid) or flat & wide strapping - 2" wide aluminum
strip or flashing will work fine. Is the case of the neon tied to this
ground as well?

A safety gap of 1.5" is a little bit wide for a 12 KV neon. The fact
that it fires sporadically even at this distance means that you're
significantly pushing the insulation capability of the neon...
especially since you've still got the tank caps directly across it. 

The wire going between your tank caps, spark gaps, and primary needs to
be heavy gauge flexible wire - #2 or #4 AWG. Slip it inside some 1/8"
wall vinyl tubing to better insulate it. This will improve the primary Q
a bit, sharpenning up the tune. If your SW caps are all the same, you
should have about 0.0077 - 0.008 uF with nine of them. 

You've also added inductance to your primary. Have you tried adjusting
the tuning via a tap on the primary? A back of the envelope calculation
estimates that your secondary/resonator is running at around 430 kHz,
while your primary circuit may now be running at about half of that if
you're using all 15 turns. If you are out of tune, this may also be
contributing to your RFI. Try retuning at lower power levels (i.e.
smaller number or spacing of gaps).

BTW, EMI filters will not help prevent the radiated power coming off
your coil. You need to move the coil or the computer away from one
another.

Safe coilin' to you!

-- Bert --



Good luck!