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If you're interested in the nitty-gritty detail of how chemical anti-static products work, these patents might be worth a look: Electrostatic Hazards by Günter Lüttgens and Norman Wilson. Butterworth-Heinemann, 1997. Explains how static electricity accumulates and becomes a source of ignition and/or explosion. Versions of the symbol will often have the hand being crossed out as a warning for the component being protected, indicating that it is ESD sensitive and is not to be touched unless antistatic precautions are taken. Antistatic garments or antistatic clothing can be used to prevent damage to electrical components or to prevent fires and explosions when working with flammable liquids and gases. [ citation needed] An antistatic wrist strap, ESD wrist strap, or ground bracelet is an antistatic device used to safely ground a person working on very sensitive electronic equipment, to prevent the buildup of static electricity on their body, which can result in ESD. It is used in the electronics industry when handling electronic devices which can be damaged by ESD, and also sometimes by people working around explosives, to prevent electric sparks which could set off an explosion. It consists of an elastic band of fabric with fine conductive fibers woven into it, attached to a wire with a clip on the end to connect it to a ground conductor. The fibers are usually made of carbon or carbon-filled rubber, and the strap is bound with a stainless steel clasp or plate. They are usually used in conjunction with an antistatic mat on the workbench, or a special static-dissipating plastic laminate on the workbench surface. [ citation needed]
Allen, Ryne C. (August 1999). "ESD BAGS: TO SHIELD OR NOT TO SHIELD". EE-Evaluation Engineering . Retrieved 2017-07-02. If you have floor coverings made from synthetic fibers, you probably get a static charge every time you walk over them. That's not However, your comment that the computer must be plugged in for grounding to the case to work is fundamentally incorrect. Grounding to the case works because the electrical potential between you and the motherboard is equalized via the case. Having the computer plugged in does nothing except create a risk that the computer is powered on without you knowing it.typically something like copper) running through them. They can usually be connected to ground at intervals as well. Pipelines and hoses are another place where static electricity can cause problems. Static is a particular concern Our ground wire is also helpful in reducing the noise produced by wireless phones and improving the quality of radio, sound, and TV monitors. It's a versatile solution that can improve the overall driving experience for everyone in the car. normally anything to worry about, but it can be a problem if you're working in an office with sensitive electronic or computing equipment.
even on a short one hour trip. So, to have experienced such immediate and dramatic results since using your Mizter Electricity and Magnetism: Static Electricity, Current Electricity, and Magnets by John Beaver and Don Powers. Mark Twain Media, 2010. A combination of student and teacher guides in a single book. Ages 10–12 (US grades 5–6). insulated conductors are rubbed, such as when you rub a balloon repeatedly on your clothing. You'llUS Patent and Trademark Office from US Patent 3,383,559: Antistatic footwear by Karl Oesterheld, May 14, 1968. An antistatic device is any device that reduces, dampens, or otherwise inhibits electrostatic discharge, or ESD, which is the buildup or discharge of static electricity. [1] [2] ESD can damage electrical components such as computer hard drives, and even ignite flammable liquids and gases. just like normal floor coverings, but they're made with a good proportion of electrically conducting carbon fibers dotted
which rubbing achieves very effectively). You can read a full explanation in our article about static electricity. a b Namaguchi, Toshikazu; Hideka Uchida (1998). "Wrist strap designs and comparison of test results for MIL-PRF-87893 and ANSI EOS/ESD Association S1.1". Electrical Overstress/Electrostatic Discharge Symposium Proceedings, October 6–8, 1998, Reno, Nevada. USA: ESD Association, Institute of Electrical and Electronics Engineers (IEEE). pp.3B.4.3. doi: 10.1109/EOSESD.1998.737044. 1878303910.Static electricity, dust and particle problem". www.swedishelectrostatics.com . Retrieved 2016-05-02. Some wrist straps are "wireless" or "dissipative", and claim to protect against ESD without needing a ground wire, typically by air ionization or corona discharge. These are widely regarded as ineffective, [12] [13] if not fraudulent, and examples have been tested and shown not to work. [14] [15] Professional ESD standards all require wired wrist straps. [12] See also [ edit ] That's why, if you're soldering sensitive electronic components into a circuit, it's usually a good idea to wear an electrically conducting wrist-strap to carry any static safely to Earth. Factories
US Patent 3,639,807: Low-static carpet by Thomas B Mccune, Hudson Wire Co. Issued February 1, 1972. A typical anti-static carpet made from a mixture of conducting and non-conducting yarn.
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by Randy Dotinga. Wired, June 8, 2006. Metal playground slides can generate enough static electricity to damage cochlear implants in deaf children; antistatic coatings seem to be the answer. Antistatic garments have conductive threads in them, creating a wearable version of a Faraday cage. Antistatic garments attempt to shield ESD sensitive devices from harmful static charges from clothing such as wool, silk, and synthetic fabrics on people working with them. For these garments to work properly, they must also be connected to ground with a strap. Most garments are not conductive enough to provide personal grounding, so antistatic wrist and foot straps are also worn. Antistatic garments are used in many industries such as electronics, communications, telecommunications and defense applications. [ citation needed] Antistatic mat [ edit ] Various symbols can be found on products, indicating that the product is electrostatically sensitive, as with sensitive electrical components, or that it offers antistatic protection, as with antistatic bags. US Patent 3,650,816: Additives for clothes dryers by Jerome Rudy et al, Lever Brothers Company. Issued March 21, 1972. Describes a chemical that you spray into clothes tumble dryers to reduce static cling. Static Fires Are a Peril at the Pump by Marcia Bieder. The New York Times, July 27, 2008. Are gas-pump fires an urban myth? Far from it.
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