Re: Need help....

Hi Albert,

	I would use the 9000 volt for the ladder and the 15000 for the Tesla coil.
 Once the ladder starts, it is mostly a current driven device and the
voltage is not that important.  However, the Tesla coil will definitely
benefit from using the 900VA transformer instead of the 400VA.  Mine uses a
single 15kV/60mA and can easily hit the 3-4 foot range.  I think I can get
it to six with lots of little tweaks...  Of course, if you want to get
less, simply de-tune it a little or turn down the variac.  When I work in
my little basement, I can never run full power so I have to limit how much
power I feed it.  Otherwise, it would arc to everything.  Once you get
going, you will quickly want to get bigger arcs, so don't limit yourself



At 01:31 PM 8/6/99 -0400, you wrote:
>I just picked up 2 Neon sign transformers for $40.00 U.S. Dollars for both.
>1 120V 60Hz 15,000V  60ma 900VA, and 1 120V 60Hz 9,000V 60ma 400VA. I am
>thinking about just using the 15KV for a Jaccobs ladder and using the 9KV
>for a tesla coil. Does anyone out there have any ideas of what type of coil
>I can construct with this transformer being used as the input to the
>primary? I would like to produce 3 or 4 foot arcs. Is this possible. I don't
>want to go any longer than that right now because my experience with Tesla
>coils are limited. I want to learn as much as I can before really building a
>monster. Any suggestions as what I can use to accomplish this feat? I have
>compiled all of the information I can find on the internet regarding
>formulas, and have constructed a MathCad file that will automatically
>calculate the formulas out for me, but I really don't know what to use to
>determine average spark length. Any information/Ideas will be appreciated.