Comment by Tsiklon
15 hours ago
The extension cable they used to include in box with the computers, it has the third pin for the charger brick connector which is wired to ground
15 hours ago
The extension cable they used to include in box with the computers, it has the third pin for the charger brick connector which is wired to ground
There's zero chance that the DC ground in the laptop is tied to earth ground in the charger: they use LLC resonant converters and flyback converters (depending on vintage) - an earth ground tie would defeat the purpose of these isolated topologies.
No they isolate L and N not PE.
However it’s wired up the fact is the electric buzzing feeling goes away if you use a grounded extension cable instead of two pin.