9 ms·

It is at least plausible, that you could run an AC current over your arms and over your chest. This can cause a stimulus to your nervous system if the current i

It is at least plausible, that you could run an AC current over your arms and over your chest. This can cause a stimulus to your nervous system if the current is high enough to overcome the action potential. A tingling sensation, muscle spasm and aching would be the cause for low levels of current and prolonged exposition. But since you found the culprit, you would be easily be able to mitigate your exposure. Either by wearing latex or rubber gloves or proper grounding of your device, which should not shock you btw. Above the action potential you muscles will contract and your nerves will give stimuli, which can cause tension and anxiety. If you feel the shock sometimes you are definitely above action potential. There is another threshold above the action potential, which will cause irreversible damage, heart failure or death. A residual current device is usually installed with your circuit breakers to prevent residual current above this threshold.

iamtoomas 5y ago
OP here (new acc, because previous one has anti-procrast enabled:) It's not a shock, that's comparable to a static electricity discharge, when touching a door handle for example. And the "shock" I feel when I partially touch my laptop, is comparable to someone constantly pulling on one strand of your body hairs. It's a constant pain that happens when You baaarely come in to contact with the laptop with for example Your forearm (the skin on the palms is too thick to feel it) It's actually a common theme with macbooks. A former coworker actually pointed it out to me. "Ugghh, don't you hate it when you slide your finger across your laptop and it's giving you that buzz?" I was like "What are you talking about? It's just the brushed aluminum feel?" He told me to unplug the charger and try again. And Holy moly indeed the buzz stopped.
- scantis 5y ago
  My wording was maybe a bit bad, but this really sounds like AC current leakage. When you feel it, it is above the action potential, therefore activating your nerves and muscles. This could be due to improper grounding or faulty components. This is not normal and shouldn't be! It can cause all kinds of symptoms, but the general consensus is, that if it is below the dangerous threshold of around 30 mA, there will be only discomfort but no permanent or irreversible damage. Discomfort is lightly said, but can have a huge impact on your quality of life. Please do something about this and maybe complain to the vendor. Even though this is not seen as health risk. There are some studies suggesting in vitro damage for all kinds of cells at low levels of current, you as a complete system will be very resilliant to this.

iamtoomas 5y ago

OP here (new acc, because previous one has anti-procrast enabled:) It's not a shock, that's comparable to a static electricity discharge, when touching a door handle for example. And the "shock" I feel when I partially touch my laptop, is comparable to someone constantly pulling on one strand of your body hairs. It's a constant pain that happens when You baaarely come in to contact with the laptop with for example Your forearm (the skin on the palms is too thick to feel it) It's actually a common theme with macbooks. A former coworker actually pointed it out to me. "Ugghh, don't you hate it when you slide your finger across your laptop and it's giving you that buzz?" I was like "What are you talking about? It's just the brushed aluminum feel?" He told me to unplug the charger and try again. And Holy moly indeed the buzz stopped.

scantis 5y ago
My wording was maybe a bit bad, but this really sounds like AC current leakage. When you feel it, it is above the action potential, therefore activating your nerves and muscles. This could be due to improper grounding or faulty components. This is not normal and shouldn't be! It can cause all kinds of symptoms, but the general consensus is, that if it is below the dangerous threshold of around 30 mA, there will be only discomfort but no permanent or irreversible damage. Discomfort is lightly said, but can have a huge impact on your quality of life. Please do something about this and maybe complain to the vendor. Even though this is not seen as health risk. There are some studies suggesting in vitro damage for all kinds of cells at low levels of current, you as a complete system will be very resilliant to this.