Posted by culverpratt on
URL: https://www.es-forum.com/shielding-a-computer-keyboard-mouse-tp1543473p1543529.html

thanks for writing, Emil! Trying to squeeze in some time here at
work, where the computer is "safe" ...

Yes, the high field from computer and anything plugged into it
(headphones, mouse, etc.) still occurs as long as the computer is
plugged in, whether it is on or off. It is the old-house wiring that
is the problem; the grounding is non-functional (in spite of the
little circuit-testers' evidence to the contrary! -- some receptacles
show OK and others do not, but plugging into none of them produces a
grounded computer).

I am getting desperate and so am very interested in the shielding
material idea. There are so many choices at the lessemf.com website.
Can someone share what material would be best (cheaper is definelty a
factor right now) -- I picture myself in a shroud sitting before my
computer, wearing special gloves and poking at the keyboard.

But it all has to be grounded as well? How would I achieve that, I
wonder? With a grounding cord going out the window to an 8-foot rod
in the ground? Fortunately I am on the first floor, but still such a
thing will not be easy.




--- In [hidden email], "EMIL DETOFFOL" <lessemf@...> wrote:
>
> Do you have high fields from the peripherals when the computer is
off? How
> about when the computer is unplugged? Do you have a different
keyboard or
> mouse that you can try with this same computer?
>
>
> These simple tests may shed some light on the source of the problem.
>
> If you need to shield electric field from a mouse or keyboard,
lessemf.com
> has several shielding fabrics (see high performance mesh and
veilshield)
> that can be used to cover a keyboard and/or mouse. They also have
shielded
> gloves. Make sure you use a ground cord with electric field shields.
>
> Emil
> www.lessemf.com
>
>