Cavi di alimentazione schermati

[MarioBon]

un cavo da 10 euro
https://safelivingtechnologies.com/prod ... cords.html

un cavo da 68 euro (gigahertz solutions)
https://gigahertz-solutions.com/Shieldi ... ts/SLS4040

Measured field near power cords
The following table shows the values of electric field measured near a non shielded and a shielded power cord both in the same conditions, with the cable inserted in the wall socket at 220 V AC and the other end disconnected, quite far from other objects. Of course the wall socket has the correct ground connection. The instrument used is sensitive to the AC electric field in the band 16 Hz - 2 KHz.

Distance (cm) Non Shielded (V/m) Shielded (V/m)
1 517 2
2 285 2
5 111 2
10 21 2
20 5 2
50 2 2
100 2 2

The electric field around the cable is almost the same whatever device is attached to the cable, it depends mainly on the voltage of the wall socket.

vedere:
https://www.lowemfoffice.com/index.htm