🚀 go-pugleaf

w_tom wrote:

>    How many have seen EMP?  How many nuclear blasts have you encountered lately?

1. That's like saying "Have you seen the wind?" You can't see it, only it's effects.
2. Well, India and Pakistan have been doing some underground tests lately.

> What are the numbers associated with such fields?  The many examples are operations
> interrupted (ie computer crashes) because a very strong signal was able to create a
> minute voltage - a temporary interruption and no where near required for
> semiconductor damage.
>
>    We would do this often.  Open the steel cases and run transmitters inside the
> system.  Only to make sure the design was solid.  Semiconductor damage was never
> even a possibility - of course was never observed.  It was onlly performed to
> verify the circuits were so properly designed at to even withstand RF noise.  What
> radios are creating RF surges?

Um, AM radio transmitters.

Just curious, what RF power levels were used? Were the transmission frequencies
calculated so that the tracks, traces and cable lengths would act like 1/4 wavelength
antennae? The test sounds like a "suck it and see" aproach anyway.

>   The idea of EMP damage is all based upon speculation without numbers.  Using
> those same logical processes, I can also prove that I can crack open the earth to
> China.  If EMP creats damage, then EMP even does worse damage to semiconductor
> designed to concentrate that EMP on transistor gates.  Sometimes an electronic
> device is so poorly designed that it was crash or temporarily stop working because
> of external fields.  But those interruptions are 100 or 1000 times too small to
> cause semiconductor damage.

True, but there is a fine line between what is considered a legitimate voltage registering
a legal logic level, and a voltage on that logic pin that will destroy the input. Have a look
at some of the datasheets of logic gates. Power supply rails aren't immune to transients either.
I suspect you are referring to what might be loosly termed "low level emp transients".
For the other extreme, I suggest having a look at this paper on E-bombs.

http://www.infowar.com/mil_c4i/mil_c4i8.html-ssi

It's also got a rough normalised diagram for the relative dv/dt's of a nuclear EMP transient,
a lightning stroke, and a Flux Compression Generator.

--
Regards

David Milne