If someone has a free moment, I'd like to know:
I'm on my third laptop right now. Every time I plugged my Dell's "fat snake" into the wall, I drew quite an arc. The Lenovo's arc was not noticeable, but now I get a noticeable arc with my new HP -- not as big as the Dell's, however.
I know FA about switch mode power supplies, obviously, so I wonder
- What produces the arc?
- Why would different power supplies produce different arcs (does it just depend on output power capability)?
- Why is there no arc when I pull the plug from the outlet?