Re: [EVGRAY] Re: shielding from EMP?

Body

I will try to explain.
One year I packed up the family and headed off to Arizona.
There was or maybe still is a bussiness of a gentleman whom buys scrap military parts and pieces.
I bought almost a 1/4 ton lol
There were 6 toroidal on one arrayment. It was going from large to small in size.
8 inches next 7 next 6 and so on. It had a circuit on it.
Now I could not remember what the values were. Only one guy there told me to watch out for the fields coming off of it.
There were more weird kinds as well vortex like etc.
They were stolen from my shop. But the 6 toroidal one if you put almost anything in or on its openings it would severely alter it's value.
Sometimes blowing them.
The place was down past Phoenix.  I will check .
Prescott. I remember everything was super cheap.
So I was playing with the and seeing what would stand up and for how long kinda thing.  Diodes never took much.






Sent from my Bell Samsung device over Canada's largest network.


-------- Original message --------
From: "bart woodard [email protected] [EVGRAY]" <[email protected]>
Date: 2019-03-02 1:35 PM (GMT-07:00)
To: [email protected]
Subject: Re: [EVGRAY] Re: shielding from EMP?



Mick Ole

I brought this up years ago with some retired electronic engineering friend's.
One dI'd mention occupied iron and another the mumetel which I played with.
I bought also at the time of sheet green in colour for showing magnetic fields.
I remember playing with it and testing out each value bench guessing lol
The occupied iron did work fairly well maybe enough?
I asked the group at the time as my shop was the place of drinking coffee and teas,
about preparing. One gentleman said keep all components fresh that have never been exposed to any value under a sheet of tin and if you can lead. Then should there be an incident
you are ok . It was about 2005 lol


Sent from my Bell Samsung device over Canada's largest network.


-------- Original message --------
From: "[email protected] [EVGRAY]" <[email protected]>
Date: 2019-03-02 1:23 PM (GMT-07:00)
To: [email protected]
Subject: [EVGRAY] Re: shielding from EMP?



By the way it doesn't seem to be possible to shield the motional electric field. This makes even toroidal wound transformers radiate. The field from Alexey Chekurkov's levitating device destroys electronics. The Searl effect generator also interacts with electrical systems. Both of these devices having mechanical rotating charges make them generate motional electric fields.

Regards
Ole


---In [email protected], <onielsen@...> wrote :

Hi Mick,

Iron is a good magnetic shield. For fast rise time a good electrical conductor like copper or silver will do too. The magnetic field induces eddy currents in the electrical conductor which mirrors the magnetic field and thus cancels it on the inside or outside of the shield. Iron with its greater electrical resistance dissipates more of the magnetic field as heat.

Regards
Ole


---In [email protected], <mkjekyll@...> wrote :

As we know the E field can be shielded by a Faraday cage while the B
field is another consideration.

What is the best way to shield electronics from the fast risetime HV B
field,  what type of cocoon would be best?