EVGRAY Archive

Re: shielding from EMP?

Database ID: 112470
2019-03-02T20:00:16+00:00
onielsen2000 <[email protected]>

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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?

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