Re: Can crushing (fwd)

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

Original poster: <sroys@xxxxxxxxxxxxxxxxx>



---------- Forwarded message ----------
Date: Mon, 21 Mar 2005 15:02:09 -0700
From: Gomez Addams <gomez@xxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Can crushing (fwd)

However, series vs. parallel isn't entirely irrelevant in can crushing, 
coin crushing, and other pulse-discharge phenomena, since peak current 
is often as important or more so than total energy.

On Mar 21, 2005, at 1:34 PM, High Voltage list wrote:

> 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
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>
>