I can feel electricity through my laptop
|
Hello everyone,there is something that has been bugging me a lot lately, and I fail to find an answer for what may cause it.As the poorly worded thread title sais, sometimes, when I touch the surface of some electronical devices, such as certain MSI notebooks or my girlfriends iPad, and swipe over it with very VERY little pressure I have such a strange vibrating feeling coming off the device. It's not like the vibration you'd feel from a spinning HDD, and as soon as I hold my hands still I feel nothing. It is hard to describe just how it feels, but I would describe it as some kind of electrical vibration.It seems like it mostly has to do with power supplies. As soon as I disconnect the power supply or change the orientation of the plug it usually vanishes. Heck, when my girlfriend holds her iPad and the power supply is plugged in in a certain orientation I can even feel her skin vibrate. When we plug the power supply in the other way or unplug it it is gone. She feels it too and it creeps her out.I have absolutely no idea what causes this, and my coworkers are no help. Two of them feel nothing whilst one of them feels it very slightly.Could anyone shed some light on what the hell this is? Then again, maybe I am just oversensitive and / or should put on a tinfoil hat I've felt something familiar on occasion. I suppose it could have something to do with the 50/60Hz frequency of AC. Your fingertips are extremely sensitive to very small changes in a surface, and I can imagine that it could result in you picking up either very small resonations, or very small changes in static charge in the surface of the metal as a result of AC current. I'm not saying this is the case for sure, but its the best explanation I can think of . It would at least also explain why you don't feel it when its not connected to the net, since then it'll only run off of AC current, which doesn't produce the low frequency oscillations you sense as "vibrations".Edit: As some of you also report it happening when there's no AC connection, I suppose it could also be a sort of regularized static discharge that only happens when you move because of the fact that contact between the skin and metal then isn't that good, and static charge can build up a little bit and then at a certain point discharge again. Exactly the same for me when I move my finger over my Lenovo Y500 laptop [anywhere on the back of the screen or around the trackpad. I'm not sure why is that, but its the first time I ever noticed something like that. It has been like this since the first day of the purchase, but even when the laptop is powered off and without battery.Damn we need an expect to give us a scientific explanation! Although I'm pretty sure this only happens on specifically formatted aluminium surfaces and is a result of friction of this surface with the skin in the similar way you feel electricity when brushing a wool cloth on you. ^^ This.Most Switching mode power supplies are made this way. You get half of mains voltage on device metal chassis if it is not grounded. But this is only leak current of some components so very small current, in most cases not hazardous. Some feel it less and some more, because when you touch that metal chassis then leakage current flows through you to lower electrical potential point - ground. The strength of effect you feel depends on contact electrical resistance + your body resistance + other material resistance that is in current's path to ground. If your electrical appliances are properly grounded, then all leakage currents will flow directly to ground and there will not be any potential difference between you and device chassis = no voltage on chassis. You can measure voltage on chassis with voltage meter/multimeter on AC voltage mode. If you measure between yourself and chassis and you will see voltage level that your body will see if you touch that chassis.
This is odd to me...I cant believe that no one has explained this yet. I have a new MSI laptop and it feels as if my laptop is vibrating. Video liên quan
Today, while I was moving my laptop to another place, I felt static electricity when I touched it. The laptop was plugged to the charger. Any idea why this might be happening and more important, is this dangerous for the laptop? Thank you and much appreciated.
Hello Venom0706 This happens because of the difference in the electric charges between you and your device. As you said that your laptop was connected to the charger when you faced the issue, it can be due to two reasons. 1) The laptop might not be connected to the grounded outlet. 2) You might have touched the laptop after having rubbed your cloths that you may be wearing (typically your socks) against a carpeted floor. This can be harmful for the internal (minute) components of your laptop in a long run, but once in a while, the laptops can bear such inductions. To avoid this in future, you can follow the below approaches: • Check if there is proper grounding done to the power outlets in your home and work place, and always connect your laptop to a grounded outlet. • You can place an antistatic floor mat at your work place and home. • In case of improper grounding, before touching any internal components of the laptop, touch any metal object with your hand. This will ground you, hence neutralizing any static charge that your body may have gained.
Hope this helps.
|
