5 ms·

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

• 15155 5mo ago
  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.
  • jahnu 5mo ago
    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.
  • namibj 5mo ago
    No they isolate L and N not PE.