Re: Variable Ballast

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

Original poster: "Mr Gregory Peters by way of Terry Fritz <twftesla-at-qwest-dot-net>" <s371034-at-student.uq.edu.au>

Ryan, list

I quite like this setup. How does the efficiency compare to that of an
arc welder or E-I core air gap ballast? You mention sliding the rods out
of the tube to control current. I was wondering if the rods get pulled
(due to the magnetic field) into the tube when in operation? If so, how
do you keep them in place? I would like to make a similar unit and was
contemplating making the core from chopped up fencing wire.

Cheers,

Greg Peters
Department of Earth Sciences,
University of Queensland, Australia
Phone: 0402 841 677
http://www.geocities-dot-com/gregjpeters