Can a laptop chassis be connected to a ground wire?
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Can a laptop chassis be connected to a ground wire? If it’s possible to connect, how?
These days, there are fewer metal casings; just connect a wire randomly and that’s it – there’s not much static electricity either
The power supply for laptops is no longer located inside the computer; instead, it’s a separate unit that supplies power to the laptop, with voltages ranging from approximately 10.5 to 19 volts DC. Different brands have different voltage levels, but they are generally similar. Static electricity is generated very little inside laptops, to such an extent that it can be ignored. Unlike desktop computers, where poor grounding can lead to frequent electric shocks, modern laptop power supplies come equipped with grounding mechanisms, mainly to ensure proper grounding of the power supply.
The laptop power supply already has grounding (L, N, PE)
The laptop’s casing is connected to the ground wire; in other words, the negative terminal of the power supply is connected to the ground wire. You can use a multimeter to check this when the device is not powered on!
The power adapter already operates at ultra-low voltage, so there’s probably no need to connect a PE wire
There’s no need for that; the plugs all have three prongs and are already connected to the casing. Besides, the casings are generally made of industrial plastic, so it’s not necessary
The power converter already has a ground wire； The enclosure does not need to be grounded
The house is old, and no ground wire was installed at the time; as a result, the power circuit currently lacks a PE wire. Does anyone have any good solutions? It’s fine most of the time, but I’m worried about the possibility of electric leakage
If there is no ground connection, do not touch the metal parts with your body. If it cannot be achieved technically, then solve it through management. It is necessary to get to the bottom of things, but it isn’t very meaningful.
It’s okay; by the time it reaches the laptop, the voltage has already been converted to a safe level. The plugs are three-pronged, as the voltage at the input end of the power adapter is 220V, and this is done for safety reasons. The house is old, and no ground wire was installed back then, which is why the power supply circuit doesn’t have a PE wire. You can modify the electrical wiring in the house; since it’s an old house, using exposed wires is a simple and fast solution. It’s not ugly either once everything is properly arranged