Re: Any Interest in 30-40 kVA Power Supplies (fwd)

[<sroys@xxxxxxxxxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 07 Oct 2004 15:32:18 -0700
From: brianb <brianb@xxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Any Interest in 30-40 kVA Power Supplies (fwd)

Any flashover on a high current device such as a pulse cap
IS exciting to say the least. Some of you may remember my
little mishap with my 67kj pulse cap.

http://www.briananddebbie.com/images/Backyard%20Science/Quarter%20Shrinker/Accident/accident.htm

Regards,
Brian B.


----- Original Message Follows -----
From: "High Voltage list" <hvlist@xxxxxxxxxx>
To: "hvlist" <hvlist@xxxxxxxxxxxxxxxxx>
Subject: Re: Any Interest in 30-40 kVA Power Supplies (fwd)
Date: Thu, 7 Oct 2004 08:23:31 -0600 (MDT)
> 
> 
> Original poster: <sroys@xxxxxxxxxxxxxxxxx>
> 
> 
> 
> ---------- Forwarded message ----------
> Date: Tue, 05 Oct 2004 09:47:06 -0500
> From: Bert Hickman <bert.hickman@xxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Re: Any Interest in 30-40 kVA Power Supplies
> (fwd)
> 
> High Voltage list wrote:
> > Original poster: sroys@xxxxxxxxxxxxxxxxx
> > 
> > 
> > 
> > ---------- Forwarded message ----------
> > Date: Tue, 5 Oct 2004 07:09:37 -0600
> > From: Gomez Addams <gomez@xxxxxxxxxxxx>
> > To: High Voltage list <hvlist@xxxxxxxxxx>
> > Subject: Re: Any Interest in 30-40 kVA Power Supplies
> > (fwd) 
> > 
> > On Oct 4, 2004, at 8:43 PM, High Voltage list wrote:
> > 
> > 
> >>Original poster: <sroys@xxxxxxxxxxxxxxxxx>
> >>
> >>
> >>
> >>---------- Forwarded message ----------
> >>Date: Mon, 04 Oct 2004 11:02:21 -0700 (PDT)
> >>From: Peter Lawrence <Peter.Lawrence@xxxxxxx>
> >>To: hvlist@xxxxxxxxxx
> >>Subject: Re: Any Interest in 30-40 kVA Power Supplies
> (fwd) >>
> >>Carl,
> >>     what you have here is "the mother of all coin
> shrinker"  >>capacitors,
> >>
> >>Joules = 1/2 * C * (V)**2,   so if my math is correct:
> >>
> >>    1/2 * (2 * 10**-6) * (125,000)**2   =>   15,625
> Joules >>
> >>do the web search yourself, but IIRC it takes 4000 to
> 8000 Joules to  >>shrink
> >>a quarter.
> > 
> > 
> > Except that these caps may not be designed for fast,
> > very high current  discharges.
> > 
> > [Optimally ;-)  And yes, XRay filter caps aren't likely
> > to be ultra-low inductance pulse caps.  But I imagine
> > that if you whack anything with 15kJ, somethings going
> > to give.  A capacitance of 2uF seems a bit large for a
> > coil though, and the cable will have it's own, not
> > insubstantial, capacity to add as well.  SRR] 
> > 
> > 
> > 
> > .
> > 
> 
> Yep.
> 
> But applying 125 kV across a typical 1" x 1" 10-turn work
> coil would  be a bit of a challenge. For magnet wire, the
> upper flashover limit is  ~40-45 kV (per fellow
> "shrinkers" in Texas). But a flashover followed  by a 15
> kJ capacitor explosion could be very exciting... :^)
> 
> -- Bert --
> -- 
> ----------------------------------------------------------
> ----------- We specialize in UNIQUE items! Coins shrunk by
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>