A grounded wrist strap is a device worn by those working on electronics to discharge any electrical charge that has built up on a person. It is part of a larger family of precautionary devices known as electrostatic discharge (ESD) protective devices. The strap is connected to a ground to prevent damage to sensitive components.
A grounded wrist strap is a device that helps discharge any electrical charge that has built up on a person. Such devices are commonly worn by those working on electronics, as even a small electrostatic discharge can damage sensitive components. The grounded wrist strap is part of a larger family of precautionary devices known as electrostatic discharge (ESD) protective devices. It is also commonly called by other names, including anti-static wrist strap, ESD strap, and anti-static strap.
Grounded cuffs are extremely simple devices. Most basic models have bracelets made of conductive fabric. These are worn around a person’s wrist and connect to a small metal plate. The metal plate is connected to a long cable, which in turn is usually connected to an alligator clip. The alligator clip is then connected to a ground for the device to function properly. Any electrical charge that builds up on the person wearing the strap should discharge through the strap, into the plate and lead, then through the alligator clip and into the ground.
Those who work on computers and other electronic devices are often required to wear a grounded wrist strap. This is because static electricity can build up on a person as the folds of their clothing rub against each other and objects in the room, especially if the person isn’t wearing antistatic clothing. If static electricity is not discharged through a harmless source such as a grounded wrist strap, it can build up and then be released accidentally in objects the person touches.
Modern computers and electronic components are often designed to resist electrostatic discharge, but this protection is not complete. RAM sticks, processors, motherboards, hard drives, and graphics cards all have areas that, if exposed to ESD, could be significantly damaged or disrupted.
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