Re: Complete destruction if the Geeks perfectly good p133...

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

I agree with Alan,

Computers are a real study in faraday cages and ESD control.  All the parts
are sheilded with excelent ground systems and heavy caps and such accross
the power supplies.  Even the mother board probably has ground planes on
both outer sides.  There is also over voltage protection and all that going
on along with the fact that the power supplies are fairly high current and
not easily "pushed around" by the currents in a streamer.

However, I am still very impresssed the PC did so well!  Shows the
designers did their job well!!  A very interesting experiment indeed!!

Cheers,

	Terry

At 01:29 PM 7/5/2001 -0700, you wrote:
>The Computer didn't fry because it is a faraday cage. If you take a look at
>the powersupply, it has metal to metal contact with the frame of your case.
>Now pop open the power supply and you'll see that the ground is grounded to
>the power supply case, which in turn grounds the case. Wala, now you have a
>faraday cage:)
>
>-Alan
>
>
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Thursday, July 05, 2001 9:07 AM
>Subject: Complete destruction if the Geeks perfectly good p133...
>
>
>> Original poster: "Jason Petrou by way of Terry Fritz <twftesla-at-qwest-dot-net>"
><jasonp-at-btinternet-dot-com>
>>
>> Hi all (esp. chris)
>>
>> I had a look at the pics from the geek frying that poor old PC... I am
>very
>> impressed, and I have a couple of questions, and a theory...
>>
>> Theory - why the motherboard didnt die when it was hit with arcs - the
>> capacitance between the ceramic casing of the chip and the air, and the
>> board and the air caused the skinn effect to take place, making the
>> electricity shoot over the surface of the board/components to the grounded
>> case, not damaging it. Dont ask me about the reeboot thou :)
>>
>> Question - What dod you plug the computer into? It seems pretty daft to
>plug
>> it into the mains when you have a million volt arcs hitting the thing...
>>
>> Question 2 - I have a pretty pants computer and wouldnt mind one that
>could
>> take million volt arcs  and still work - who was the computer made by?
>Just
>> to show how well it must have been built...
>>
>>
>> Jason
>>
>> Geek # 1139 Rank G-1
>> www.thegeekgroup-dot-org
>>
>>
>>
>>
>