Re: How would you Nuclear Hardened Your Apple?

[Rubywand <rubywand@swbell.net>]

George Rentovich writes ...
> 
> Hi,
>    I would like to know how to store my back-up IIgs and related parts
> to protect them from an EMP ? Would a completely enclose them in in a
> Aluminum foil bag work? Aluminum bag , cover with aluminum screen cover
> with another aluminum foil bag? Does the bag have to grounded? Is
> grounding bad?
>    For those that do not know an EMP means electromagnetic pulse. This
> is created by the explosion of A-bomb. It only last a fraction of a
> second, causes a voltage like spike in all electronics even if they are
> not on or plugged in. This could happen if an A Bomb was exploded  many
> miles above in the upper atmosphere. You would not hear or feel it. You
> might not even see it. The military has all of their stuff hardened.
> They spray a gold plasma layer on all the electronics so they will still
> work.
>    If I am going to store  many of my back up Apples might as well do it
> right all the way. At least a few might survive. Even if I do not.
 ....

     It seems like wrapping the motherboard, KB card, and each slot card in 2-3
seperate layers of aluminum foil should work. You do not have the high
conductivity of gold or the very close covering; but, you have more and heavier
conductive layers very close to the components you want to protect.

     Don't know about the power supply. It is already in a fairly tight metal
case; but, there are leads coming from it which are not shielded. Guess it
would be a good idea to wrap the leads in foil and then wrap the whole thing in
a couple foil layers.

     Grounding the wrapped items may not be an especially good idea. Not sure.
My concern would be that anything above ground which is grounded might be more
prone to act like an antenna.



Rubywand