Re: Please help!

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

Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com> 

NSTs should be internally current limited unless you have tinkered with
them. No need to put a welder in series to limit current as far as I know.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, January 25, 2004 12:48 PM
Subject: Please help!


 > Original poster: Ronnie Pittman <r3pittman-at-yahoo-dot-com>
 >
 > hello all,
 > It has probably been about 5 years since I last run my tesla coil and my
 > memory is very bad.  Since then I have moved and the only things that I
 > kept were the secondary, the spark and safety gap, and the toroid.
 >
 > I am planning on trying to set up another coil for an Educational day my
 > school is having monday morning ( I am a high school science teacher) and
I
 > am having a hard time remembering all the details.
 >
 > I have made a new primary for this coil out of 12 turns of  3/8 copper
 > tubing spaced 3/8" and at 30 degrees to replace the old one which was a
 > cylindrical one made form 10 ga wire.  I also just finished a new cap made
 > from 24 plates of 6X6" aluminum seperated by 4 sheets of 4 mil poly.  I
 > have 8 of these banks submerged vertically in a tank of transormer oil
with
 > taps coming out the side that I can wire in any fashion.  The secondary is
 > made on 4"pvc drain pipe and is 973 turns of 24ga wire.  The toroid is 2
 > pie plates and dryer duct.   As for transformer, I have 4 good 15 kv 30 ma
 > nst's, and one PT rated at 1kva.
 >
 > My questions are as follows, If my calculations are correct, for 1 of the
 > nst I would need to run four of the caps in series?  Should I try to use 2
 > nst or possibly the pt with a welder in series and if so any suggestions
on
 > what to put the welder rating at?  Also If I remember correctly, the spark
 > and safety gap are parallel to the transformer and the cap is behind the
 > spark gap in series on one leg going to the primary? Also anything else I
 > should use to protect the nst?
 >
 > Any and all help would be greatly appreciated.
 > Thanks
 > Ronnie Pittman
 >
 >