paralleling variacs

["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>

Hey everyone,

It looks as though I am going to have to gang some (3) small variacs 
together to achieve my desired current rating. Just a question on 
paralleling chokes. When ganging 3 variacs together, can a single core 
be used (with 3 windings - one for each variac), or will I have to make 
a choke for two of the variacs and then run its output through another 
choke (larger) with the output from the 3rd variac? - Hope this make 
sense :) Shown below:


                            Variac3 output-------------
                                                      |
   Variac1 output--------                         (Choke 2)--output
                        |                             |
                        |                             |
                      (Choke 1) ---- Choke 1 output---- 
                        |
                        |
   Variac2 output--------



Cheers,

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