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Re: Tesla coil help

Original poster: "Jim Lux" <jimlux@xxxxxxxxxxxxx>


----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, March 19, 2005 3:26 PM
Subject: Re: Tesla coil help


> Original poster: motosk8er2@xxxxxxx
>
> Ive built many coils before. The transformer is 30ma and the capacitors
are
> speicial ones for tesla coil use from
> <http://www.amazing1.com>www.amazing1.com . Now for a pole big what do
youe
> mean a ballast is needed?


NSTs are inherently current limited (by the huge leakage inductance).  Pole
pigs are not.  You need something to limit the current when running the coil
so as to manage the power drawn.  Typically you do this by putting a big
inductance in series with the primary of the pig (i.e. the line side).  A
500 ft spool of house wire is one strategy.  Another, more adjustable, idea
is to use an arc welder (old style, not new inverter type) which uses
leakage inductance of the transformer to control the arc current.