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Re:Seven years later, I bought a new MacBook. For the first ... by Gracana on Tuesday June 02, 2020 @09:34AM (#23390814)
As others have said, that's not it. It's the line filter capacitors in the power supply. There's two types: X capacitors which filter differential noise (between line and neutral) and Y capacitors which filter common mode noise (between line and chassis.) Some small AC current (microamps) will pass through the Y capacitor to the chassis. If the chassis is ungrounded, you may be able to feel the current when you touch it.
Re:Seven years later, I bought a new MacBook. For the first ... by lostlogin on Tuesday June 02, 2020 @09:56AM (#23391014)
> you may be able to feel the current when you touch it.

Are there people who can’t feel it? It really is gross and people comment on it as soon as they touch it.

Re:Seven years later, I bought a new MacBook. For the first ... by Gracana on Tuesday June 02, 2020 @10:41AM (#23391506)
I don't have a macbook so I can't comment on it, but I have a touhgbook with thinkpad power supply, and I feel it only on my wrists when I'm well grounded. Can't feel it on my fingers or palms.
Re:Seven years later, I bought a new MacBook. For the first ... by aembleton on Tuesday June 02, 2020 @10:19AM (#23391272)
I can't feel it
Re:Seven years later, I bought a new MacBook. For the first ... by CydeWeys on Tuesday June 02, 2020 @10:23AM (#23391318)
So then it's two causes, either one of which they could have fixed to prevent the problem.