Static electricity in pc.

[DeagleMaster]

When I hold my arm very close to my pc I can feel a small tingling. The same that comes from a ballon if you rub it agains you shirt, but much less. I can feel the same if I hold my arm very close to my monitor. Is this normal?

[aezakmi]

depends

is the computer grounded? if it's not, or the polarities of the AC plug are inverted you might feel some electrostatic effects or even a small amount of current if you touch it

 

about the monitor, classic models like mine work with very high current because of the use of a flyback transformer and something called degaussing coils that cause the screen to "demagnetize" while in use by deflecting part of the current through the entire screen, so, the amount of current inside the tube is so high (up to 25 Kv) that causes the surrounding particles (and air) outside the screen to ionize causing, well, your arm hair to go crazy for example, mine has an aditional glass filter that prevents this effect, consider getting one if you want to avoid that

 

BUT if you're using a new monitor that shouldn't happen because the current inside is less than 1/25 of what's used in tube monitors

[DeagleMaster]

8 minutes ago, aezakmi said:

depends

is the computer grounded? if it's not, or the polarities of the AC plug are inverted you might feel some electrostatic effects or even a small amount of current if you touch it

 

about the monitor, classic models like mine work with very high current because of the use of a flyback transformer and something called degaussing coils that cause the screen to "demagnetize" while in use by deflecting part of the current through the entire screen, so, the amount of current inside the tube is so high (up to 25 Kv) that causes the surrounding particles (and air) outside the screen to ionize causing, well, your arm hair to go crazy for example, mine has an aditional glass filter that prevents this effect, consider getting one if you want to avoid that

 

BUT if you're using a new monitor that shouldn't happen because the current inside is less than 1/25 of what's used in tube monitors

Im using it in a grounded plug. Its feels very week. I can berly feel it when I have my arm right next to the case. I can feel the same when I hols my arm next to my TV, light bolbs and my electric oven. Is this not normal for electric equipment?

 

[DeagleMaster]

9 hours ago, aezakmi said:

depends

is the computer grounded? if it's not, or the polarities of the AC plug are inverted you might feel some electrostatic effects or even a small amount of current if you touch it

 

about the monitor, classic models like mine work with very high current because of the use of a flyback transformer and something called degaussing coils that cause the screen to "demagnetize" while in use by deflecting part of the current through the entire screen, so, the amount of current inside the tube is so high (up to 25 Kv) that causes the surrounding particles (and air) outside the screen to ionize causing, well, your arm hair to go crazy for example, mine has an aditional glass filter that prevents this effect, consider getting one if you want to avoid that

 

BUT if you're using a new monitor that shouldn't happen because the current inside is less than 1/25 of what's used in tube monitors

What do you think?

[aezakmi]

Uhhh well, I think this is related to body capacitance, let's see, we're made of atoms, you know that, now, these atoms have positive and negative charges or protons and electrons, so, a capacitor it's something designed to hold an X amount of electricity, when you're near idk let's say a 15kva transformer, inside a server room or near high powered industrial equipment, the surrounding air becomes charged with electrons and protons, and your body acts as a capacitor for that charge, it holds it, passively, but, if you manage to close a circuit, for example by touching metal or other conductor, you'll discharge part of that load to match with the object itself, creating that shock feeling in your hands or even a small arc.

Every object holds an electrical charge, even wood, plastic, rubber, even if those aren't conductors they do hold a charge.

 

If you're grounded (-) aka on the floor without shoes and you touch a computer, microwave oven, desk fan, etc you'll feel part of the current going through your body.

Or, if your body holds a positive (+) charge and you touch something that's grounded you'll feel the same.

This mostly happens in places where the ground/earth wire isn't used in wall outlets (only positive and return are used) or where the outlet polarity is different (reversed) than the device polarity, inside every (modern) wall outlet there are 2 wires of different color, let's say black is the live or positive and white is return or negative, you can identify them and connect each to the correct pin, that way the polarities will always match with the plug. In my apartment for example there's no way to tell what's positive and negative (there are tools for this of course) because both wires are black and there's no ground, so there's 50% chance the polarity is reversed

 

well that's long.

[DeagleMaster]

4 hours ago, aezakmi said:

Uhhh well, I think this is related to body capacitance, let's see, we're made of atoms, you know that, now, these atoms have positive and negative charges or protons and electrons, so, a capacitor it's something designed to hold an X amount of electricity, when you're near idk let's say a 15kva transformer, inside a server room or near high powered industrial equipment, the surrounding air becomes charged with electrons and protons, and your body acts as a capacitor for that charge, it holds it, passively, but, if you manage to close a circuit, for example by touching metal or other conductor, you'll discharge part of that load to match with the object itself, creating that shock feeling in your hands or even a small arc.

Every object holds an electrical charge, even wood, plastic, rubber, even if those aren't conductors they do hold a charge.

 

If you're grounded (-) aka on the floor without shoes and you touch a computer, microwave oven, desk fan, etc you'll feel part of the current going through your body.

Or, if your body holds a positive (+) charge and you touch something that's grounded you'll feel the same.

This mostly happens in places where the ground/earth wire isn't used in wall outlets (only positive and return are used) or where the outlet polarity is different (reversed) than the device polarity, inside every (modern) wall outlet there are 2 wires of different color, let's say black is the live or positive and white is return or negative, you can identify them and connect each to the correct pin, that way the polarities will always match with the plug. In my apartment for example there's no way to tell what's positive and negative (there are tools for this of course) because both wires are black and there's no ground, so there's 50% chance the polarity is reversed

 

well that's long.

I use my pc in a grounded outlet. But do you think I should worry?