The monitor is a really tricky one. There are essentially four sources of EMR from monitors. Most of them you can reduce significantly if you know a bit of electronics, and the fourth you can reduce with some simple shielding.
I will list the four sources, and then give suggestions on how to reduce and/or eliminate them.
Note: I'm not an expert. This is simply a brain dump of what I've gathered on this topic so far. I'm working on building my own mostly EMF-free computing setup using these principles myself (project duration unknown; 1-3 years).
Monitor EMR sources:
1) Most monitors today input mains power directly into the monitor, this means the monitor will contain an SMPS (switching-mode power supply). SMPS are notorious EMR sources. This is most likely the worst culprit.
2) The LED's inside the panel itself will require a high voltage driver. Something in the order of 20-80V depending on panel size. This means there needs to be either another SMPS-type module inside the monitor to produce the correct voltage, or a converter circuit called a buck converter, boost converter, or inverter - depending a bit on the implementation. All of these alternatives produce wide-band EMR.
3) The monitor itself contains a computer, a circuit board, that processes the incoming signal and converts it into the current needed to drive the pixels of the panel. Low to medium source of wide-band EMR.
4) The pixels themselves on the panel. They are microscopic transistors-like devices the make up the liquid crystal pixels. My guess is this is a medium to high source of EMR, and very much depends on the panel.
Reduction:
1 a) Buy a monitor with an external power supply. This will not always help, but it moves the SMPS from inside the monitor to outside the monitor and further away from you.
1 b) Requires electronics knowledge: best solution is to rip out the SMPS or throw away the external power supply, and replace it with something called a linear power supply. These create almost no EMR.
2) Replace the LED driver with a linear power supply. Requires a little electronics knowledge, but not necessarily that advanced. You simply want to power the LEDs with a linear power supply (something that is not switching).
3) Once you have (1) sorted out, you drive the electronics with this linear power, and then you put the circuit board of the monitor into a metal box to prevent EMR from the electronics. Requires some electronics knowledge, and some DYI work.
4) You cannot put the panel into a metal box, because then you can't see what's on it, but the second best solution is to use some sort of transparent shielding material. Either fabric or transparent film created for this type of purpose.
Here's a guy that sells exactly this type of film for monitors:
http://www.4ehsbyehs.com/rf-protection/LED-LCD-screen-protection-filmMost likely this will also help reduce emissions from (1-3).
As for the computer itself. If you are very EMF sensitive, it might be a good idea to go for one of these new so called Single Board Computers (SBC). They are tiny computers with very low power consumption, but they can still drive a 4k display at 30fps. The advantage is you can easily put the whole computer into a metal box, and thus reduce EMR significantly.
Since the power consumption is low, it also helps to reduce the EMR in the first place.
Some examples:
SBCs:
https://www.google.fi/search?q=single+board+windows+computer
Fanless Mini PC SSD clients:
https://www.aliexpress.com/af/category/70803003.htmlAs for mouse and keyboard, I'm still waiting for some manufacturer to bring us fully optical solutions:
http://es-forum.com/Completely-EMF-free-mouse-it-exists-if-you-can-afford-it-tp4033112.html
Locked
