![]() ![]() Electronics are sensitive and can be damaged at much lower voltages than that. Electronic Componets Many activities create charges up to thousands of Volts.īy the time you feel an ESD shock event, you are already at 3,000 Volts. You're probably asking, why should I care about ESD? Well, the answer is because ESD can cause a lot of damage to electronics.Īs we discussed earlier, any human activity is going to create a charge build up. ![]() The common theme here is that when we ground ourselves properly, we can dissipate any charge build up and limit ESD events. ESD Damage It will keep your body from building up charge so that when you close the car door, no ESD. To prevent this, as you are getting out of your car door, hold the door handle. Either that, or enjoy getting shocked.Īlso, are you tired of getting shocked by closing your car door when you get out of it? Me too. You can do it quickly and naturally where no one will notice. You might want to practice this at home first, as some people might find it weird if they see you do it. It only takes a second or two in most cases. It takes much less voltage than when you feel a shock to damage electronics.Īnd by the way, if you also suffer from door knob shock often, a trick you can do is to touch a non metal part of the door right before you grab the handle to dissipate enough charge slowly off of your body so that when you do touch the metal handle, it won't be a sharp discharge. That's a lot! It happens frequently, especially in Winter time when the air is much more dry. You usually feel a shock when the charge in your body is around 3,000 Volts. My point is that every person, depending on their specific chemistry, will have different experiences with ESD. I'm the one that shocks my hand on the door handle every time. Some people don't experience this often. Oh, and for the record, my body is a big charge creator. That simply means that its very easy under normal conditions to have a lot of ESD events. ![]() The problem is that these conditions aren't so rare in a typical lab or manufacturing facility. Those are the main things we can do to create a lot of ESD. Dry air at 20% relative humidity (RH) can give us about a 15x more charge build up than 80% RH air. Dry air helps things to build up even more charge because it lets the air isolate those objects even more. We should pull all of the humidity out of the air with a dehumidifier.Dragging our feet, pulling items across the table or floor, and many other activities work well. Let's do a lot of rubbing, the more the better.Get materials that are prone to create charge easily: like wool and carpet blue jeans are good too.Let's have a little fun and figure out how to make the biggest ESD that we can. We can do the following: Now that we know more about ESD, let's look at the many different factors that cause it. Lightning is another great example where air molecules bumping up against each other cause a big charge build up, and when that build up gets high enough, it balances itself out with adjacent clouds or usually the ground with a lightning strike. When ESD Is Most Likely To Occur The build up of charge cannot balance itself out unless it is big enough to overcome the resistance of the dielectric, or insulator. Air happens to be a pretty good insulator. We normally call these materials insulators to make things easier. There's a catch though, there are materials called dielectrics that usually resist the flow of electrons. When things contact each other, like rubbing, they usually cause the electrons to move around a bit from one atom to the next. The best way to think about it is that there are electrons in everything around you. The answer is that it's all about building up electric charge. I'm sure we have all wondered why it happens at some point in time. These are great examples of everyday ESD events. Do you ever get shocked when you touch a door knob or close your car door after you have gotten out of the vehicle? Have you ever seen lightning? It turns out that we experience ESD all of the time. We don't want this article to run off into the theoretical deep end, so we will just discuss the gold nuggets that you need to know about. That sounds pretty simple, doesn't it? If we look closer though, we start to dive into the world of electromagnetism. The easiest ESD definition is as follows:ĮSD = sudden flow of electrons between two objects So what does ESD stand for? The ESD acronym simply means electrostatic discharge. In this guide, I'm going to walk you through everything you need to know about electrostatic discharge, from what causes it to how to prevent it. ![]()
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