Finally a possible explanation [1] as to why Apple chargers (USB and laptop) give you tingles when touching the metal casing of the device they're plugged into.

Finally a possible explanation [1] as to why Apple chargers (USB and laptop) give you tingles when touching the metal casing of the device they're plugged into. Would love to know if the mentioned capacitor is indeed the reason and whether it leads to enough efficiency to justify the scare it causes with first time customers. [1]: https://youtu.be/3Hdn0MuCK_0?t=2m14s https://youtu.be/3Hdn0MuCK_0?t=2m14s