Re: [noise!] (fwd) Re: FYA/I: Who'd have gaussed it?

[jim bell <jimbell@pacifier.com>]

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At 01:55 PM 1/23/96 -0500, Robert Hettinga wrote:
>Just in case you wanted to know how dept...
>
>Cheers,
>Bob
>
>--- begin forwarded text
>
>Date: Tue, 23 Jan 1996 11:21:54 -0500 (EST)
>From: Paul Picot <ppicot@irus.rri.uwo.ca>
>To: Philip Stein <pstein@measurement.com>
[stuff deleted for space]

>Use a coil *around* the building.  This makes the problem just
>within the realm of the possible, though horribly impractical.
>
>I'll spare the collected minds and spool spaces of the technomads list the
>details, and reduce this to a recipe:
>
>Collect the following:
>
>- 20 miles of 0000-guage insulated copper wire (about 32 tons worth)
>- five standard 20 MW gas-turbine power plant generators (about 20 tons ea.)
>- fuel for about 10 minutes of operation (about 4 tons)
>- five standard high voltage transmission rectifier modules for the above.
>- one standard 69,000 volt, 10,000 amp transmission-line contactor set
>
>Wrap 1000 turns of the wire around your target.  This makes a bundle about
>18 inches in diameter.  Wire your generators and rectifiers to yield
>70,000 volts DC, and connect them via the contactor to the coil.


Suppose, however, the goal was NOT to erase the media, but simply to reset 
(temporarily crash) the computers inside.  Please recalculate based on:

1.  A 72,000 volt, 0.8 microfarad capacitor, fully charged.
2.  One turn of, say, #16 wire around the building.
3.  A (sacrificial) improvised switch constructed by forcing a sharpened 
point through a thin, insulating layer of polyethylene plastic sheet against 
a conductive plate, which 
eventually (and catastrophically) arcs through the remaining fraction of a 
millimeter to produce an exceedingly low-impedance contact in a microsecond 
or so.





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