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Topic: Electrostatic discharge

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	Electrostatic discharge device of surface mount type and fabricating method thereof - Patent 6721157
		The electrostatic discharge device according to claim 2, wherein said discharge opening of said middle insulating plate is predetermined in its size so as to have desired ionization voltage characteristics in consideration of both a gap between said first and second discharge terminals and a composition of the discharge gas filling said discharge opening.
		The electrostatic discharge device according to claim 3, wherein each of said first and second discharge terminals of said middle insulating plate includes at least one triangular projection tip formed at each of said opposite edges of said discharge opening, and is integrally formed on said middle insulating plate.
		In addition, the general discharge characteristics of the ESD device of this invention, such as the discharge start voltage and discharge time, are predetermined in accordance with the ionization characteristics of the plasma discharge gas filling the discharge opening of this ESD device and the size of the discharge opening.
	www.freepatentsonline.com /6721157.html (4760 words)

	Electrostatic Discharge Association: Fundamentals of ESD
		Electrostatic discharge is defined as the transfer of charge between bodies at different electrical potentials.
		The most common cause of electrostatic damage is the direct transfer of electrostatic charge from the human body or a charged material to the electrostatic discharge sensitive (ESDS) device.
		Electrostatic discharge can damage devices so they fail immediately, or ESD may result in latent damage that may escape immediate attention, but cause the device to fail prematurely once in service.
	www.esda.org /basics/part1.cfm (2747 words)

	Electrostatic discharge - Wikipedia, the free encyclopedia
		Electrostatic discharge (ESD) is the sudden and momentary electric current that flows when an excess of electric charge, stored on an electrically insulated object, finds a path to an object at a different electrical potential (such as ground).
		A portion of a static discharger on an aircraft.
		CDM discharge depends mainly on parasitic parameters of the discharge and is strongly depending on size and type of component package.
	en.wikipedia.org /wiki/Electrostatic_discharge (1414 words)

	Electrostatic discharge protection circuit patent invention (Site not responding. Last check: 2007-10-09)
		The electrostatic discharge protection circuitry may have a power ESD device that limits the voltage level across the sensitive circuitry to a maximum voltage and that draws current away from the sensitive circuitry when exposed to ESD signals.
		The electrostatic discharge protection circuitry may also have an ESD margin circuit that helps to prevent current flow through the sensitive circuitry when the maximum voltage is applied across the sensitive circuitry.
		The electrostatic discharge protection circuitry may include a power ESD device that limits the voltage levels across the sensitive circuitry to a maximum voltage and that draws current away from the sensitive circuitry.
	www.freshpatents.com /Electrostatic-discharge-protection-circuit-dt20051208ptan20050270714.php (1030 words)

	What is ESD? Electrostatic Discharge Static Electricity Ions
		This electrostatic surface charge is either positive or negative depending on whether there is a deficiency or abundance of free electrons respectively.
		The amount of charge generated through the process of friction and separation will be influenced by the extent of the contact, the materials involved, relative humidity, and the texture of the materials.
		Electrostatic discharges below that level are below the threshold of human sensation but are still lethal to electronics and associated semiconductor devices.
	bugclub.org /beginners/miscellaneous/esd.html (598 words)

	Method and apparatus for providing electrostatic discharge protection for an inductive coil of a magnetic transducer ...
		Structures are provided to dissipate electrostatic charges which may arise between the leads of the inductive coil or between the inductive coil and one of the pole pieces in a magnetic head.
		An electrostatic discharge element is coupled to the inductive coil for dissipating electrostatic charge from the inductive coil.
		The electrostatic discharge element may include a first electrostatic discharge element coupled between the first turn of the inductive coil and the magnetic yoke and a second electrostatic discharge element coupled between the magnetic yoke and the last turn of the inductive coil.
	www.delphion.com /details?pn=US05777829__ (415 words)

	(EMI Field Notes) Shielding Against Electrostatic Discharge (MDDI archive, Dec 98)
		Electrostatic discharge (ESD), although troublesome for portable electronic medical devices, is controllable with effective shielding.
		In Figure 1b, the discharge is to a wire or trace, which may cause a voltage drop along the wire itself, and the current may couple magnetically to adjacent wires.
		Discharge directly to a plane spreads out very quickly, confining the intense magnetic field to the immediate vicinity of the discharge point and to the current's constrictions downstream.
	www.devicelink.com /mddi/archive/98/12/005.html (1215 words)

	Composition and process for preventing electrostatic discharge - Patent 5320780
		Electrostatic discharge (ESD) is one of the most destructive phenomena in modern industry, especially the electronics industry.
		Electrostatic discharge is defined in the U.S. Military Handbook DOD-HKPK-263 as a transfer of electrostatic charges between bodies at different potentials by direct contact or induced by an electrostatic field.
		The present invention provides a static dissipative polymeric composition for preventing Electrostatic Discharge (ESD) and a process for contacting the composition to a substrate to be protected from ESD with the polymeric composition.
	www.freepatentsonline.com /5320780.html (4266 words)

	Electrical Discharge On The Martian Surface (Site not responding. Last check: 2007-10-09)
		Lightning discharges occur in association with terrestrial desert sandstorms and volcanic ash plumes.
		This model is analogous to a Van de Graff generator in which the moving rover is the energy source for generating static charge, the discharge point is the brush, the wind blown dust is the belt, and the Martian surface is both the charge source and the accumulator.
		With the discharge device off, relative charging of the moving rover is measured by the electrometer (perhaps using the potential first recorded after landing as a baseline).
	powerweb.grc.nasa.gov /pvsee/publications/marslight.html (2861 words)

	Reducing Electrostatic Discharge....
		Discharges of static electricity occur so rapidly that current flow for a short duration may be high enough to damage products.
		The wrist strap may be connected to the garment in addition to the skin of the operators wrist but the earthing of the garment may be difficult as most garments of traditional manufacture are not electrically connected across the seams.
		Electrostatic testing must be carried out both on fabric and on the complete garment system.
	www.s2c2.co.uk /monitor/tcm38/red_el_dis.html (1460 words)

	Electrostatic Charge Generation - In Hydraulic and Lubrication Systems
		Electrostatic charge generation occurs in fluid systems as a result of friction between the fluid and system components.
		Electrostatic charge is generated in a number of ways whenever there is friction between two bodies moving relative to one another.
		Electrostatic discharge usually manifests itself as a clicking sound as charge repeatedly increases and discharges to surfaces of lower voltage (usually earth or ground) through sparking.
	practicingoilanalysis.com /article_detail.asp?articleid=809&... (1711 words)

	Electrostatic Discharge (ESD) in Integrated Circuits (Site not responding. Last check: 2007-10-09)
		Electrostatic discharge (ESD) has been known as a major source of reliability failures in integrated circuits.
		The problem is difficult to model and analyze since the various sources of electrostatic energy--such as the human body, testing equipment, and accumulated free charge--all have different electrical characteristics.
		In addition, the abrupt and intense nature of a typical ESD event forces the devices that absorb the discharged energy to operate under high injection conditions, where the analysis is quite complex.
	www.unex.berkeley.edu /cat/course981.html (403 words)

	Electrostatic Discharge (ESD) Overview
		Unlike a contained electric current passing through a circuit, ESD is the sudden transfer or discharge of electricity from one object to another.
		An electrostatic charge on surfaces can easily cause them to be quickly coated with whatever dust is in the area.
		Various types of ionizers are used to produce a gentle flow of ionized air to neutralize electrostatic charges on all kinds of materials.
	www.dataid.com /esdinfo.htm (467 words)

	ESD - Electrostatic Discharge - HW server - esd - electrostatic discharge
		Protection against electrostatic discharge is rapidly increasing in importance.
		Electrostatic charge builds up, for example, when two insulative surfaces are rubbed against each other.
		Electrostatic discharge is a tiny "spark" of electrostatic charge jumping from one surface to the other.
	www.hw-server.com /docs/esded.html (805 words)

	Electrostatics - Wikipedia, the free encyclopedia
		Electrostatics is the branch of physics that deals with the forces exerted by a static (i.e.
		In electrostatics we study e-fields, voltage, and charge, but ignore any magnetic fields generated by the motion of these charges or that may be present for other reasons.
		Because of the electric field's relationship to and interaction with magnetism, electrostatics is a subfield of electromagnetism.
	en.wikipedia.org /wiki/Electrostatic (1461 words)

	Detailed Outline for a paper on
		The upper and lower boundaries of an ESD-safe discharge rate are determined by the application and materials used.
		Too fast a discharge will lead to an ESD event, which can be measured using a simple loop antenna attached to the input of a high-speed DSO.
		To reduce the potential of an unsafe discharge from a device to a very conductive operator, adding resistance to the operator at the interface from the skin to the device may be necessary.
	www.evaluationengineering.com /archive/articles/0198cope.htm (1469 words)

	Radio-Electronics.Com :: ElectroStatic Discharge ESD Tutorial (Site not responding. Last check: 2007-10-09)
		ElectroStatic Discharge or ESD awareness is particularly important for anyone associated with electronics.
		Using what are termed ESD PA or Electrostatic Discharge Protected Areas, the destructive effects of static on electronics equipment during manufacture can be virtually removed.
		The smallest discharge that can be felt is around 5kV, and even then this magnitude of discharge may only be felt on occasions.
	www.radio-electronics.com /info/circuits/esd/electrostatic_discharge.php (1040 words)

	Electrostatic Discharge Protection in a Membrane Switch —
		This phenomenon, called electrostatic discharge (ESD), can become a problem with unprotected electronic devices, which can be damaged by the discharge.
		The contact discharge method measures shielding when the discharge tip of a special ESD gun is in direct contact with the keypad.
		In order to test the effectiveness of the shield, you monitor the I/O traces of the membrane switch during the discharge of the ESD gun (Figure 3).
	www.millerdial.com /electrostatic (1258 words)

	Frequently Asked Questions - Electrostatic Discharge Sensitive (ESDS)
		A transfer of electrostatic charges between bodies at different electrostatic potentials caused by direct contact or induced by an electrostatic field.
		UPSET FAILURES occur when an electrostatic discharge (ESD) has caused a current flow that is not significant to cause total failure.
		They are especially formulated to prevent the build-up or retention of electrostatic potential, the objective being to maximize explosive safety, to protect miniature electronic parts, and to preclude ignition of stray flammable materials.
	www.dscc.dla.mil /Offices/Packaging/ESDS.html (1725 words)

	Electrostatic Discharge (ESD) (Site not responding. Last check: 2007-10-09)
		Electrostatic Discharge (ESD) is a transfer of electrostatic charge between bodies or surfaces at different electrostatic potentials, either through direct contact or through induced electrical fields.
		ESD is considered to be a subset of EOS and is usually caused by static electricity.
		Once this charge is generated on the device, operator or equipment, there is a high risk of damage due to the subsequent discharge.
	www.cdmatech.com /resources/qmr/esd.jsp (630 words)

	Discharge - Wikipedia, the free encyclopedia
		A patient discharge, when a patient leaves a hospital after his or her medical treatment is completed.
		The average discharge of a river, meaning the amount of water flowing through the river.
		Vaginal discharge, a normal occurrence for some women during their menstrual cycle, or a medical sign of many conditions including endometrial cancer, yeast infections, and some STDs.
	en.wikipedia.org /wiki/Discharge (209 words)

	Electro Static Discharge (ESD) Briefing At READE
		This "shock" known as Electro Static Discharge or ESD also may be responsible for damaging many of the rejected electronic components in your company.
		An upset failure occurs when an electrostatic discharge has caused a current flow that is not significant enough to cause total failure, but in use may intermittently result in gate leakage causing loss of software or incorrect storage of information.
		As an employee, the hidden threat of electrostatic discharge or ESD should be of great concern to you.
	www.reade.com /Safety/esd.html (988 words)

	Electrostatic Discharge Simulator features ergonomic design., Schaffner EMC, Inc.
		This feature prevents false counts when discharges have not occurred, which is a particular advantage in long test runs where an accurate count is required.
		In the case of air discharges, the effective pulse voltage present at the moment of discharge is measured and shown on the display, avoiding errors through stray discharges.
		The simulator has an elevated discharge voltage range of up to 30 kV in both air and contact discharge modes, exceeding current industry ESD test standards, which require testing at pulse voltages of 25 kV.
	news.thomasnet.com /fullstory/469640/rss (832 words)

	Electrostatic discharge and embedded systems - Deccan Herald (Site not responding. Last check: 2007-10-09)
		Electrostatic energy is a stationary charge which can build up in either a non-conductive material or in an un-grounded conductive material.
		This charge can occur in two ways, either through polarisation, which occurs when a conductive material is exposed to a magnetic field, or tribo-electric effect, which occurs when two surfaces contact and separate, leaving one positively charged and one negatively charged.
		The depth of the damage caused by ESD is a function of the size of the charge and the rate at which discharge happens.
	www.deccanherald.com /deccanherald/nov292004/snt3.asp (1059 words)

	Electrostatic Applications: Electrostatic Applications: Other Weblinks (Site not responding. Last check: 2007-10-09)
		Journal of Electrostatics is the only academic journal devoted entirely to electrostatics.
		Electrostatics Society of America is the leading electrostatics organization in North America.
		Electrostatic flavor applicators put a negative charge on a flavor to coat foods uniformly.
	www.electrostatic.com /other.htm (806 words)

	electrostatic discharge - a Whatis.com definition (Site not responding. Last check: 2007-10-09)
		Electrostatic discharge (ESD) is the release of static electricity when two objects come into contact.
		Familiar examples of ESD include the shock we receive when we walk across a carpet and touch a metal doorknob and the static electricity we feel after drying clothes in a clothes dryer.
		For example, an employee may wear a wrist strap when working with devices or may wear ESD control footwear and work on an ESD floor mat that causes the electrostatic charge to go into the ground instead of into the device.
	whatis.techtarget.com /gDefinition/0,294236,sid44_gci776121,00.html (362 words)

	Factbase: Understanding Electrostatic Discharge
		Electrostatic Discharge is the phenomenon where electricity suddenly flows from one object to another.
		At some point, they may find a means to do this suddenly; this discharge, or rapid exchange of electrons, is ESD.
		If you get yourself charged up in your car and then stop to buy gas, you may discharge near the gasoline fumes; the spark can be sufficient to start a fire at the end of the gasoline nozzle.
	www.modmini.com /mod/factbase/esd.php (1269 words)

	Electrostatic Discharge Precautions > Identifying and Avoiding Electrostatic Discharge
		The first way to avoid electrostatic discharge (ESD) is to be able to identify when and why it occurs.
		Electrostatic discharges are the most severe form of electromagnet interference (EMI).
		When people move, the clothes they are wearing rub together and can produce large amounts of electrostatic charge on their bodies.
	www.informit.com /articles/article.asp?p=21704&rl=1 (655 words)

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