Re: PowerBox Peer Review

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


You can connect up your variacs and then check with a meter.  At 10 kVA you
need an effective power reactor inductance value of 20 milliHenries.  This
is assuming you do not measure the value of the variacs, just the value of
the external reactance that you plan to add in series.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, October 22, 2003 8:00 AM
Subject: PowerBox Peer Review


 > Original poster: Matt Skidmore <fox-at-woozle-dot-org>
 >
 > I like to submit a circuit diagram for comments and reveiw. I am designing
 > a controller (dubbed PowerBox) with the goal of using it to run 10kVA
 > transformers and under. I have both an uncommented diagram and a commented
 > diagram that attempts to explain my logic behind parts of the diagram as
 > well as indicate design decisions I have not finalized. I have not filled
 > in exact values for all of my components (mostly resistors) and expect to
 > do that as I begin choosing specific components.
 >
 > My biggest concern is the use of variacs for ballasting. I have done my
 > homework and read up on the subject. I plan to use variacs rated 140v -at-
 > 50A. A variac for each pole for voltage control, and a variac for each
 > pole for ballasting (4 total). I'm hoping the ballast variacs are
 > large enough to withstand this use without cutting a slot into them. On my
 > diagram with comments I have another possible solution to this problem. I
 > would appreciate some comments on this configuration.
 >
 > The following link has the diagrams as well as some pictures of my mini
 > tesla coil.
 > http://foxxz-dot-net/gallery/tesla
 >
 > Thanks!
 > -Fox
 >
 >
 >