Re: Can crushing (fwd)

["High Voltage list" <hvlist@xxxxxxxxxx>]

Original poster: <sroys@xxxxxxxxxxxxxxxxx>



---------- Forwarded message ----------
Date: Mon, 21 Mar 2005 11:17:12 -0800 (PST)
From: Peter Lawrence <Peter.Lawrence@xxxxxxx>
To: hvlist@xxxxxxxxxx
Cc: pterren@xxxxxxxxxxxx
Subject: Re: Can crushing (fwd)

Peter Terren,
             great web page and experiments (now I know what caps to be on
the lookout for!)...


I see you're wiring your caps in parallel, however

J = 1/2 * C * V**2

means that two caps in parallel double the energy, but two caps in series
quadruple the energy (if you have the power supply voltage...)

['cept for putting caps in series halves the capacitance as well as
doubles the working voltage, so for a given number of caps, the energy
stays the same regardless of how they're connected. SRR]

-Pete Lawrence.




>
>---------- Forwarded message ----------
>Date: Sun, 20 Mar 2005 12:42:46 +0800
>From: Peter Terren <pterren@xxxxxxxxxxxx>
>To: High Voltage list <hvlist@xxxxxxxxxx>
>Subject: Re: Can crushing
>
>For those with an interest in can crushing, I have upgraded my setup to 
>1500J which will tear an empty can apart.
>
>There is noticeable crushing at only 200J, better at 300.  Also dependent on 
>the turns used. Note that 3 turns at 2400 V 110uF (300J) had an effect but 3 
>turns at 5200 V 35 uF (300J) had no effect.
>
>Now a question for the clever people:
>What happens when you try to crush a full can with 1500J?
>a: Nothing - total energy is absorbed and makes the can a bit warmer.
>b: Not much different. Can tears in half.
>c: Pressure wave explodes the can at the weakest point.
>d: Other (eg opens a worm hole, triggers brief fusion reaction)
>
>Answer and other info/pics/videos on my site.
>http://tesladownunder.iinet.net.au/misc1.htm#Can%20crusher%202
>
>
>Peter
>
>
>
>