Posted by jaime_schunkewitz on
URL: https://www.es-forum.com/The-Effectiveness-of-shielding-tp1545288p1545302.html

Interesting stuff. A few questions and thoughts.

> I only noticed after a week the gridded
> metallic window shielding"

So you can see through this window and it covers the
screen only? Are such wondows commercially available?

> It can be hooked up to 24V batteries with an internal
> low noise step down regulator- no noisy switch modes,
> only passive devices. Must now rig the cables for that, will
> take a month.

24v = two 12v auto batteries in series. That would be
ideal. Most laptops run off of odd voltages, 14.8v etc.
It would last a long time between charges, no need
for a transformer for a linear power supply, which requires
a great deal of shielding for me to tolerate.


> with grid (better than fabric and affordable)

Again what is this grid, and what would it shield?


> and various shieldings will make a good
> general purpose monitor

This thing is a laptop, not a monitor, correct?

> in absence of fiber optics,
> a 'Ground loop cutter' (based on something called a ballun I think)
>is available to go on a vga video lead. This is a little box that
>makes the signal cable carry less noise to the monitor from the CPU.

Do you have a link to such a device?

> I have a few of these laptops now but only one power supply,
> the supplies are expensive,

So these are switching power supplies? I recently
discovered much less symptoms and less EMF when my
laptop runs on batteries vs. the AC switching power adapter.


> The previous shielded box I made had a screen that was
> too hard to read (I can fix that now)

How? With that metalic grid?

Eli