When I move my EMF radiation meter near a charger it shows me that there is radiation from the charger, and even the device itself radiates when the charger is connected to it. The chargers emit radiation even if the device is not connected to them.
I understood that the radiation is caused because of the way the modern chargers are working. They are working in a way that they switch on and off very quickly. It is done by a DC/DC converter.
It results in a very high frequency noise (radiation) that travels on the charger's wires and even on the connected device.
But I noticed that when I connect the ground of the output of the power supply to the ground of the wall socket, there is no radiation!
So I have some questions:
- Why it eliminates the radiation?
- Is it safe to do that? (I know that the two sides of a transformer need to be isolated from each other, but it is just in principal).
- Will it damage the device, the charger or the socket?
- If it's ok, why the chargers are not designed in the way they will not radiate? (The chargers have only 2 connectors to the wall socket so why they don't have the third connector to the socket's ground?)