alt Hacker NewsThere'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.
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jahnu • today at 9:20 AM
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.
No they isolate L and N not PE.