Hi, I have bought a EVE V i5 8GB recently, it seems that my charger has the problem of electricity leakage, when I charge my tablet with the original charger, I have used a test pencil to test is there a electricity leakage, you can see it from the screenshot, does anyone has the same problem?
I can’t say I’ve noticed anything on my V but my previous Toshiba Portege laptop gives me enough of a current to be slightly uncomfortable when I rest my wrist in a certain position so I don’t think it’s an uncommon problem.
I don’t know exactly how it is with the V, but I had the experience with a Siemens Laptop but only in Countries with 110V even though I used a Charger with a Groundpin. In that case I had always around 100V on different points of the housing. But only a very small current which wasn’t dangerous at all. But still funny because if you typed on the keyboard on a certain position you felt a slight buzz.
Mechatronics (part mechanical, part electrical) engineer here!
I would guess that this is caused by “capacitive coupling” - a charge is transferred to the metal housing of the V. It’s actually more common than you’d expect for metal things, and (usually) harmless. While the metal can get a charge and feel a little “tingly” but almost no current will flow, and it’s current rather than voltage that does the real damage.
It happens because the charger isn’t grounded (the third pin you sometimes see on the plug) so the voltage of the housing can sort of float up because it’s not being held down by a ground pin.
Generally the tingliness from capacitive coupling is no more dangerous for you or your device than a slight static build-up. It’s annoying, but nothing to worry about.
I’ve noticed that tingling feeling in the past when moving my fingers past the topcase of Apple’s notebooks whilst they’re charging. Seems to happen with most MacBook Airs and Pros but doesn’t seem to be harmful. @IsaacB already gave a more technical explanation above…