DC supply

To: tesla-at-poodle.pupman-dot-com
Subject: DC supply
From: Tesla List <tesla-at-stic-dot-net>
Date: Thu, 27 Mar 1997 22:49:25 -0600
Approved: tesla-at-stic-dot-net

Subject: 
        DC supply
  Date: 
        Thu, 27 Mar 1997 09:58:10 -0500
  From: 
        chuck seguin <seguinc-at-algonquinc.on.ca>
    To: 
        Tesla List <tesla-at-pupman-dot-com>

Good morning everyone,

Here is a question that puzzles me.

I have aquired a great XFMR from friends at a local college.  It was
used, at the time, for a TEA laser power supply.  It's a 30 kV -at- ? mA. 
The interesting portion of this is the fact its a DC supply.  It's got a
full wave bridge connected accross the output.  The whole thing is
submerged in XFMR oil.  Now the question: can I use a DC supply
appropriatly to operate a large system, or small one at that?

Please comment with a detailed explanation.

Another question.
Why is a synchronous, rotary, gap called that way?
My studies indicate that the best time to fire the gap is at the peak of
the AC waveform, to transfer the max energy.  How is this accomplished
when you have a rotating gap that is started (the motor that is) at we
don't know when, on the AC waveform?  Or do we have something that does
"synchronize" the firing of the gap with the peak of the AC waveform.

The two questions do relate, for me.  If I use a DC power supply (full
wave rectification actually) how will a fire the gap appropriatly

Thanks in advance.

Chuck