Re: Can crushing (fwd)

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

Original poster: <sroys@xxxxxxxxxxxxxxxxx>



---------- Forwarded message ----------
Date: Mon, 21 Mar 2005 12:09:07 -0800 (PST)
From: Peter Lawrence <Peter.Lawrence@xxxxxxx>
To: pterren@xxxxxxxxxxxx
Cc: hvlist@xxxxxxxxxx
Subject: Re: Can crushing (fwd)

Peter,
      OOOPS! thanks for being so kind!

-Pete L.



>Hi Pete,
>I'll forgive you this one because a very experienced person on the 4HV forum 
>made the same mistake.
>Don't forget that the capacitance is halved as well if caps are in series. 
>Think about it.  Each cap is still charged to its full capacity and stores 
>the same energy as before.
>Cheers
>Peter
>
>----- Original Message ----- 
>From: "Peter Lawrence" <Peter.Lawrence@xxxxxxx>
>To: <hvlist@xxxxxxxxxx>
>Cc: <pterren@xxxxxxxxxxxx>
>Sent: Tuesday, March 22, 2005 3:17 AM
>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...)
>>
>>
>> -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
>>>
>>>
>>>
>>>
>>
>> 
>
>