Re: Personal intro, 4,062 joule thumper, what to do with it (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

Moderated and approved by: Gerry Reynolds <greynolds@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Fri, 22 Dec 2006 23:20:36 -0600
From: Igor Chudov <ichudov@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Personal intro, 4,062 joule thumper, what to do with it (fwd)

On Fri, Dec 22, 2006 at 03:35:48PM -0700, Tesla list wrote:
> From: Peter Terren <pterren@xxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Personal intro, 4,062 joule thumper, what to do with it (fwd)
> 
> Bert Hickman does plenty of this stuff of course but I dabble too.
> I presume those red caps are Maxwell's and they look like they have the low 
> profile terminals that proper pulse caps have. 

You are right, they definitely are pulse caps -- they are made for
repeated pulse discharges that may last for quite a while, until the
lineman walks over and finds the underground place where "thumps"
occur.

> Steve Ward uses a similar contactor for his (also red) Maxwell pulse
> cap so maybe he knows something useful as well.  I wonder if they
> make sure there is no-one holding the other end first before they
> fire it.

> Exploding copper wire is dangerous if you are close enough to get
> plasma up your nose!  There is no chemical danger just explosive and
> high voltage and ozone and auditory and ultraviolet and....

Thanks Peter... I presume that a 4k joule explosion could even do some
physical damage. 

> Peter
> http://tesladownunder.com/Pulse_Power.htm
> http://tesladownunder.com/CanCrushing.htm
> 
> > Date: Thu, 21 Dec 2006 13:33:58 -0600
> > From: Igor Chudov <ichudov@xxxxxxxxxxx>
> > To: tesla@xxxxxxxxxx
> > Subject: Personal intro, 4,062 joule thumper, what to do with it
> > Recently a thumper followed me home. It is described here.
> > http://igor.chudov.com/projects/High-Voltage/Hell-Machine-THUMPER/
> > Associated Research cable fault locator mdl 8613 also known as
> > "thumper". It is labeled HyJoule. Its purpose is to help locate
> > insulation faults in high voltage buried cable, by inducing giant DC
> > pulsed discharges that blast through faulty insulation. The lineman
> > would walk along the buried cable path and feel the "thumps" with his
> > feet.
> >
> > The way it works is this. The first device is a DC source, it uses
> > about 10A of 120 VAC as supply and produces up to 25 kV DC as
> > output. For safety when NOT in operation, when high voltage is
> > switched off, high voltage side is grounded by a contactor. The second
> > device is comprised of a high voltage capacitor, and a special high
> > voltage contactor to produce periodic discharges. There is also high
> > voltage cable that is supposed to be connected to the cable being
> > tested. I would guesstimate the size of it as 7/8" in diameter and 50
> > feet in length.
> >
> > With voltage up to 25 kV, and capacitance of 13 uF, my thumper is
> > designed to deliver up to 4,062 joules, or approximately the energy
> > carried by bullets from a burst of assault rifle fire.
> >
> > With generous prodding from Bert, I got it to work.
> >
> > Now the question is what can I do with it.
> >
> > My immediate plans are to a) try to shrink coins and b) try to make
> > lightnings by burning up thin wire and hoping that the exploding wire
> > is hot enough to ionize air to carry the bulk of the discharge.
> >
> > If so, I would like to hear some relevant experiences.
> >
> > Specifically is blowing up copper wire for lightning a long term
> > health hazard (I am afraid so, and thus want to explode steel wire).
> >
> > As for coin shrinking, I want to build a sturdy steel box for
> > containing explosions.
> >
> > i
> >
> > 
> 
>