Static Electricity Misconceptions: Fake vs. Real ESD Wrist Straps & Proper Grounding Deep-Dive
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Date: 2021-07-14
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Comments and reviews: 10
2mas
As a former ESD coordinator im impressed. This is a very good video about ESD.
Regarding when the damage is most likely to occur it is true that it is when handling SMT components like a CPU on their own.
It might be interesting to know that many of the individual leads on a IC do have protection inside in form of diodes. These can only protect so much though.
The further you go in the assembly the less risk there is and in the end fully assembled products also have filters on every input (like USB on your phone) to ensure they can survive a direct disscharge. Beneath a certain level of voltage of course.
Also for those stating ESD is fake i can guarantee you that this industry that is under heavy economical pressure (especially in the west) would drop ESD in a heartbeat if it was meaningless. ESD protection is very expensive for the industry.
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As a former ESD coordinator im impressed. This is a very good video about ESD.
Regarding when the damage is most likely to occur it is true that it is when handling SMT components like a CPU on their own.
It might be interesting to know that many of the individual leads on a IC do have protection inside in form of diodes. These can only protect so much though.
The further you go in the assembly the less risk there is and in the end fully assembled products also have filters on every input (like USB on your phone) to ensure they can survive a direct disscharge. Beneath a certain level of voltage of course.
Also for those stating ESD is fake i can guarantee you that this industry that is under heavy economical pressure (especially in the west) would drop ESD in a heartbeat if it was meaningless. ESD protection is very expensive for the industry.
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chris
so i fried my cpu somehow when my fishtank filter leaked onto the power board, and tripped the RCD. My PC was on the same power circut but a seperate outlet as the fishtank, so im thinking somehow the power got through the earth circut and into my cpu? It goes to boot and immidiatly shuts off, when i unplug the CPU power connector it will go full fan mode and stay running til i shut it down. so im assuming the cpu is fried? i really wasnt in the market for an upgrade from my i7 7700, but looks like i might need to :( im looking at a i3 10105f for 130aud and a Asrock B460M Steel Legend for 110aud, and everything else i will be moving from my other build (the ram, gpu, cooler) but might take the op to build into a smaller matx case instead of my existing eatx beast
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so i fried my cpu somehow when my fishtank filter leaked onto the power board, and tripped the RCD. My PC was on the same power circut but a seperate outlet as the fishtank, so im thinking somehow the power got through the earth circut and into my cpu? It goes to boot and immidiatly shuts off, when i unplug the CPU power connector it will go full fan mode and stay running til i shut it down. so im assuming the cpu is fried? i really wasnt in the market for an upgrade from my i7 7700, but looks like i might need to :( im looking at a i3 10105f for 130aud and a Asrock B460M Steel Legend for 110aud, and everything else i will be moving from my other build (the ram, gpu, cooler) but might take the op to build into a smaller matx case instead of my existing eatx beast
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Keith
Ground LITERALLY means a steel rod in the dirt outside your building with a wire that is connected to a common ground in your house electrical. All of the center plugs in your outlets are supposed to be connected to that rod. (USA plugs, Ive never been any place ) Ive seen this connection inside the wall box either not connected or poorly tightened. You might check this if you are still having static issues after following Steves suggestions. Something else to keep in mind, it takes many times MORE voltage for you to feel a static discharge then it does to break electronics. You most likely will NOT feel the static discharge that destroyed your stuff.
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Ground LITERALLY means a steel rod in the dirt outside your building with a wire that is connected to a common ground in your house electrical. All of the center plugs in your outlets are supposed to be connected to that rod. (USA plugs, Ive never been any place ) Ive seen this connection inside the wall box either not connected or poorly tightened. You might check this if you are still having static issues after following Steves suggestions. Something else to keep in mind, it takes many times MORE voltage for you to feel a static discharge then it does to break electronics. You most likely will NOT feel the static discharge that destroyed your stuff.
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Ahmed
My brother-in-law has a company in France that's all about ESD, from auditing to vocational training... He told me about ESD ages ago, and to be honest, I never took it seriously, but that's only because I have a habit of raw-dogging everything I do in the tech world, like never backing up my data before trying some risky too-good-to-be-true stuff. Sometimes it does take some catastrophic event for me to learn to be careful although I admit that it's wiser to learn from other people's mistakes without having to make them yourself.
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My brother-in-law has a company in France that's all about ESD, from auditing to vocational training... He told me about ESD ages ago, and to be honest, I never took it seriously, but that's only because I have a habit of raw-dogging everything I do in the tech world, like never backing up my data before trying some risky too-good-to-be-true stuff. Sometimes it does take some catastrophic event for me to learn to be careful although I admit that it's wiser to learn from other people's mistakes without having to make them yourself.
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Irthevks
You really need to make sure that your work surface is grounded to the same point as yourself.
It doesn't matter if it's you, your table, or your case that has a buildup of static.
There's also the problem of stray voltage from mains neutral.
Anyway, over in schukoland you can't safely ground yourself directly to mains neutral, since there is no hard standard on where the neutral is located.
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You really need to make sure that your work surface is grounded to the same point as yourself.
It doesn't matter if it's you, your table, or your case that has a buildup of static.
There's also the problem of stray voltage from mains neutral.
Anyway, over in schukoland you can't safely ground yourself directly to mains neutral, since there is no hard standard on where the neutral is located.
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Richard
Good work guys, I typically cut corners relying on frequent grounding by touching something (often a spare case) that is connected to ground or after watching this I realize it might not actually be. Amazing timing as I am doing a build tomorrow and will now improve my technique, considering I have been doing this for more than 20 years I can only imagine how useful this might be to people new to this.
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Good work guys, I typically cut corners relying on frequent grounding by touching something (often a spare case) that is connected to ground or after watching this I realize it might not actually be. Amazing timing as I am doing a build tomorrow and will now improve my technique, considering I have been doing this for more than 20 years I can only imagine how useful this might be to people new to this.
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vman
A good tip to get a good grounding point on a painted PSU is to screw in an unpainted PSU screw half way into it. The screw holes are usually unpainted or at least scratched off by the screw threads and makes direct contact with the PSU chassis which should be grounded inside.
A quick continuity test between that screw and the earth pin on the PSU 3 pin power socket should prove it's working.
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A good tip to get a good grounding point on a painted PSU is to screw in an unpainted PSU screw half way into it. The screw holes are usually unpainted or at least scratched off by the screw threads and makes direct contact with the PSU chassis which should be grounded inside.
A quick continuity test between that screw and the earth pin on the PSU 3 pin power socket should prove it's working.
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Chuu
I know that's not what wireless ESD straps actually do, but in theory, shouldn't it be possible to discharge static buildup into the air by use of corona discharge through a very sharp point? It is my understanding that static buildup typically results in significantly higher static potentials than what is used in eg. ioniizers that use the same technique for transferring charge to the air.
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I know that's not what wireless ESD straps actually do, but in theory, shouldn't it be possible to discharge static buildup into the air by use of corona discharge through a very sharp point? It is my understanding that static buildup typically results in significantly higher static potentials than what is used in eg. ioniizers that use the same technique for transferring charge to the air.
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Igors
Dry - cold and humid - hot go together because there is direct correlation how much water air can hold at each temperature.
Thats how air conditioner partially work, removing humidity from air condensing it on cold surface of device.
That is why i suggested multiple times to put components into dry air chamber or partial vacuum when overclocking, there will be no ice buildup.
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Dry - cold and humid - hot go together because there is direct correlation how much water air can hold at each temperature.
Thats how air conditioner partially work, removing humidity from air condensing it on cold surface of device.
That is why i suggested multiple times to put components into dry air chamber or partial vacuum when overclocking, there will be no ice buildup.
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derpty
Latent failure is fun, when I got my old vaio laptop it kept having random bluescreens, took me a year to figure out it was the RAM, I knew sod all about computers back then and it passed about a million RAM tests before finally failing one.
As for anti-static wristbands, my bro made me one out of a bit of wire, some cable ties and a wall plug with only the top pin attached.
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Latent failure is fun, when I got my old vaio laptop it kept having random bluescreens, took me a year to figure out it was the RAM, I knew sod all about computers back then and it passed about a million RAM tests before finally failing one.
As for anti-static wristbands, my bro made me one out of a bit of wire, some cable ties and a wall plug with only the top pin attached.
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