[SI-LIST] Re: shielding effectiveness
- From: "Douglas C. Smith" <doug@xxxxxxxxxx>
- To: VWani@xxxxxxx
- Date: Fri, 02 Nov 2001 21:08:53 -0800
Hi Vijay,
Take a look at the article: www.dsmith.org/pdf/emc96.pdf for a way of
measuring the magnetic field shielding effectiveness of a material. For
shields within electronic equipment, especially small equipment,
magnetic field shielding effectiveness is oftem more meaningful than
electric field or plane wave shielding effectiveness. I have found many
materials rated at 100 dB to plane waves check out at about 10 dB to a
(perpendicular) magnetic field. Such a field often illuminates shields
in equipment.
Doug
"Wani, Vijay (V)" wrote:
>
> hello:
>
> How can i differentiate electric field shielding effectiveness with magnetic
> field shielding effectiveness of a material? is there any test standard /
> non standard?
>
> i appreciate any direction. thank you in advance.
>
> vijay wani
> Dow Chemical
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