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Topic: Gas discharge


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  Gas discharge path - Patent 4797778
For switching high voltages, high frequencies and at high numbers of switching actuations, a gas discharge structure is provided which is composed of a series circuit of two or more individual arresters which comprise electrodes of copper and which are filled with gas which is at least partially composed of hydrogen.
a gas in said gas discharge gap which is partially composed of hydrogen with the hydrogen constituent lying between 5 vol.
The gas discharge structure of claim 1, wherein: said activation compound carried on said end faces of said electrodes comprises sodium silicate and nickel.
www.freepatentsonline.com /4797778.html   (1147 words)

  
  Gas-discharge lamp - Wikipedia, the free encyclopedia
Gas discharge lamps are a family of artificial light sources that generate light by sending an electric current through noble gas (mixture)(Argon, Neon, Krypton and Xenon, or mixtures of these gases).
In operation the gas is ionized, and free electrons, accelarated by the electrical field in the tube, collide with gas and metal atoms.
Gas discharge lamps offer long life and high light efficiency, but are more complicated to manufacture, and they require electronics to provide the correct current flow through the gas.
en.wikipedia.org /wiki/Gas_discharge_lamp   (893 words)

  
 Gas discharge - Wikipedia, the free encyclopedia
A gas discharge is an electrical discharge through an ionized gas, i.e.
The character of the gas discharge critically depends on the frequency or modulation of the current: see the entry on a frequency classification of plasmas.
A glow discharge and arc discharge in low-pressure gas produces visible light with emission spectrum depending on the gas used.
en.wikipedia.org /wiki/Gas_discharge   (202 words)

  
 Chemical of the Week -- Gases that emit light
When a voltage is applied to the two electrodes and the pressure of the gas in the tube is reduced, eventually a pressure is reached at which a current flows, and the gas begins to glow.
In some discharge lamps, the pressure of the gas during operation is 1 to 2 atmospheres.
The presence of helium in the discharge tube increases the intensity of neon's emission by a factor of 200.
scifun.chem.wisc.edu /chemweek/gasemit/gasemit.html   (1057 words)

  
 Carbon Nanotubes for Gas Discharge Tubes
Gas discharge tube is a metal/ceramic tube filled with a low-pressure gas.
Gas discharge tubes are often placed in central office switch gear, slick cabinets and vaults and other customer locations.
Current gas tubes, for example, can not be used for ADSL and HDSL because of their low reliability.
www.applied-nanotech.com /gastube.htm   (283 words)

  
 Gas Discharge Lamp - and more   (Site not responding. Last check: 2007-10-31)
Gas Discharge Lamp - By adam nossiter the associated press aug..
Gas Discharge Lamp - Enid designers have some ideas on how to make the most of a small situation.
Gas Discharge Lamp - But you can also buy desks, reading lamps, coat racks and a variety of other furniture, not to mention electronics like.
www-2.lamps627.com /Gas-Discharge-Lamp.html   (513 words)

  
 Gas laser and its applications
Operating in a manner similar to the helium-neon laser, it employs an electric discharge for pumping, using a percentage of nitrogen gas as a pumping gas.
The molecular nitrogen laser is self-terminating, upon discharge the nitrogen enters the upper lasing energy level then decays to a lower state emitting light at 337.1 nm in the UV.
principle of gas laser: basically a gas laser consists of a gas whose atoms or molecules are raised to a higher energy states, and an "inversion" extis between a certain pair of energy levels in the gas.
www.acsu.buffalo.edu /~yuchang   (2864 words)

  
 Experiments to Study the Gaseous Discharge and Filling of Vessels
Discharge of the vessel occurs when the fast-acting toggle clamp is actuated, removing the sealing plug from the face of the nozzle.
This discharge occurs in a little over 2 sec (approximately five characteristic times), and the data are seen to agree well with the adiabatic theoretical results for the entire duration of the process.
During the initial stages of the discharge, the data follow the adiabatic theory quite closely, as there is little time elapsed and only a small temperature difference between the gas and vessel walls, so that significant heat transfer does not occur.
www.ijee.dit.ie /articles/999982/experime.htm   (3841 words)

  
 Gas Discharge Tubes (GDTs): Littelfuse Gas Plasma Arrestors
Littelfuse gas discharge tubes may also be used in other suitable applications including alarms, remote sensors, CATV, and broadband electronics where high current surges exist and minimal capacitive loading is desired.
Littelfuse gas discharge tubes (or gas plasma arrestors) are available in axial leaded, surface mount, radial leaded, and special packages.
Littelfuse also offers a range of Broadband optimized gas discharge tubes, featuring very low insertion loss, even up to 1.5Ghz allowing them to be used to protect the antenna input of a satellite set top box, as well as the new generation of broadband electronics.
www.littelfuse.com /gas_discharge_tubes.html   (488 words)

  
 Introduction to Gas Discharge Tubes and Cold Cathode X-ray Tubes   (Site not responding. Last check: 2007-10-31)
A wide variety of gas discharge tubes were in use prior to the discovery (in 1895) of x-rays, e.g., Geissler, Crookes, Hittorf, and Lenard tubes.
Following the discovery of x-rays, the design of these gas discharge tubes was altered so as to maximize and control their x-ray output.
In later tube designs (e.g., 1910+), the positions of the anode and anticathode were often reversed so that the anode came in from the side and the anticathode came in from the end of the tube opposite the cathode.
www.orau.org /ptp/collection/xraytubes/introduction.htm   (1195 words)

  
 Three way gas discharge lamp - Patent 4958102
A three-way lamp as claimed in claim 3, wherein said gas discharge tubes are orthogonally mounted with the larger tube over the smaller.
One of the features of the invention is the provision of two gas discharge tubes on the same housing.
Gas discharge tubes 11 and 13 are under light transmissive bulb 17 which constitutes the upper half of housing 15.
www.freepatentsonline.com /4958102.html   (1033 words)

  
 Noble Gas Isotope Geochemistry: Volcanic Hazards and CO2   (Site not responding. Last check: 2007-10-31)
Figure 4: Temporal variations in the helium isotopic composition, normalized to the ratio in air (R/Ra), in gas discharged from a fumarole near the summit of Mammoth Mountain demonstrating the dramatic increase in magmatic helium following the onset of seismic activity and dike intrusion beneath Mammoth Mountain in 1989.
Anomalous discharge of CO and magmatic helium from soils first occurred during the winter of 1990 and was followed by observations of several areas of tree kill and/or heavier than normal needlecast the following summer.
Figure 5: The dissolved helium and neon in the CO -rich cold groundwaters appear to be a mixture of water in equilibrium with air (air-saturated water,ASW) and a gas component that is similar in composition to the soil gas in the tree-kill zones.
www-esd.lbl.gov /CIG/noblegas/volcanic.html   (755 words)

  
 Gas discharge from Vagina
For the past 3 years, I've experienced gas discharge (without an odor) from the vagina at varying frequencies.
I've noticed a correlation between uncomfortable bloating and gas in the digestive tract and gas discharge from the vagina.
Approximately 2 years ago, the gas discharge increased in frequency (2 or three times a week), in span of discharge (60 to 90 seconds), and in intensity.
www.medhelp.org /forums/WomensHealth/messages/2081.html   (446 words)

  
 Gas Discharge Lamps, Ballasts, and Fixtures
Because of the unusual appearance of the light from gas discharge tubes, quacks and con artists also have used and are using this technology as part of expensive useless devices for everything from curing cancer to contacting the dead.
Rather, the atoms or molecules of the gas inside a glass, quartz, or translucent ceramic tube, are ionized by an electric current through the gas or a radio frequency or microwave field in proximity to the tube.
Fluorescent lamps are a special class of gas discharge lamps where the electric current produces mostly invisible UV light which is turned into visible light by a special phosphor coating on the interior of the tube.
members.misty.com /don/dschlamp.html   (7875 words)

  
 HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES, WRANGELL MOUNTAINS, ALASKA
Chemical and isotopic compositions of the gas and water discharging at Shrub and Upper Klawasi indicate derivation from a combination of mantle (magmatic) and crustal (marine sedimentary rock) sources and suggest a common fluid reservoir at depth.
C in CO are similar for fluids and gas sampled at each area, and do not appear to have changed with the onset of increased spring temperatures and fluid discharge at Shrub.
This suggests that the underlying cause of the recent changes in discharge rate and temperature at Shrub is not an increase in the rate of input of magmatic heat and volatiles, but rather increases in the permeability of the upflow conduits that connect the gas-rich reservoir to the surface.
pubs.usgs.gov /wri/wri004207   (583 words)

  
 Urban Legends Reference Pages: Automobiles (Static Quo)
Whether this figure is representative of all persons involved in gas station fires and whether footwear is a contributory factor to gas station fires is not stated.
News reports of gas station fires caused by static electricity are a mixed bag of claims, warnings, and skepticism.
At least one woman was killed when she removed a flaming nozzle from a gas tank and accidentally doused herself with gasoline, according to Bob Renkes, executive vice president of the Petroleum Equipment Institute.
www.snopes.com /autos/hazards/static.asp   (2703 words)

  
 Slim Line Surge Arrestor is designed with high pressure contacts, premium plating, and are compensated to offer the ...
This gas tube surge arrestor is broadband RF devices that are capable of allowing a dc bias to pass along the center conductor, while shunting the lower frequencies associated with lightning induced transients to ground.
In the presence of a lightning-type transient, the gas within the element ionizes and switches the gas tube to a low impedance state.
Gas tube elements can divert lightning surge currents reaching a peak of 10 kA to ground without causing any degradation to the element.
www.starantenna.com /gas_discharge_tube_surge_arrestor.htm   (379 words)

  
 Gas Discharge Lamps - and more   (Site not responding. Last check: 2007-10-31)
Chelsea midfielder frank lampard believes england s debacle in denmark has served as a warning they must constantly perform at their best in germany to experience world cup glory next summer.
Gas Discharge Lamps - Frank lampard believes england s debacle in denmark has served as a warning they must constantly perform at their best in germany to experience world cup glory next summer.
Hella s exhibit at the frankfurt motor show (iaa) later this month will feature a new led headlamp with dynamic led cornering lights, an electronic parking-assistant system, a concealed rain-and-light sensor, inductive-switching interior lamps, and rear-lighting technologies including an led light curtain and 3d light guides.
www-2.lamps627.com /Gas-Discharge-Lamps.html   (432 words)

  
 Operating a Gas Discharge Panel
The chamber is filled with an appropriate gas such as neon-nitrogen or neon-argon which, upon the application of appropriate voltages to the row and column select lines, ignites to form...
The gas discharge panel consists of gas chamber 1 and row and column select lines X...X + 3 and Y...Y + 3, respectively disposed in a coordinate array.
The chamber is filled with an appropriate gas such as neon- nitrogen or neon-argon which, upon the application of appropriate voltages to the row and column select lines, ignites to form a visible glow discharge.
www.priorartdatabase.com /IPCOM/000072056   (538 words)

  
 Gas discharge tubes : THYRISTORS
The buildup of high voltages by wind and rain is a fairly continuous process, the rate of charge accumulation increasing under the proper atmospheric conditions.
However, once a certain threshold voltage is exceeded (this voltage depends on the gas pressure and geometry of the lamp), the neon gas will become ionized (turned into a plasma) and its resistance dramatically reduced.
The result is a series of brief flashes of light from the lamp, the rate of which dictated by battery voltage, resistor resistance, capacitor capacitance, and lamp threshold voltage.
www.allaboutcircuits.com /vol_3/chpt_7/2.html   (1570 words)

  
 C09DEAE1   (Site not responding. Last check: 2007-10-31)
Gas discharge tubes contain a gas at a low pressure and a pair of electrodes.
When the electrodes are connected to a source of electricity the gas within glows.
When a metal plate outside the tube was given a positive charge, the cathode rays bent toward it (and therefore electrons are negatively charged).
educ.queensu.ca /%7Escience/main/concept/chem/c07/C07deae1.htm   (171 words)

  
 Welcome to the Museum of Historic Discharge Lamps
Over time it was learned that the carbon arc discharge could be made still more efficient by arranging that it took place inside a rare gas instead of through the air.
This led to the creation of gas discharge lamps which nearly always make use of the noble gases neon, argon, krypton or xenon.
The heat of the gas discharge serves to vaporise some of the metal, and the discharge is then carried almost exclusively by the metal vapour.
www.lamptech.co.uk   (346 words)

  
 Gas Discharge Tubes Magnetism Plasmas
The video is of a laboratory plasma generated by in "electric gas discharge tube" filled with air at a pressure of 0.1 mm.
one bending away from the magnet and the other bending toward the magnet showing that plasmas have magnetic prosperities field interacts with the magnetic field of the discharge which pushes the flow path of the of the electrons away or toward the magnet as it is brought close to the discharge.
If the discharge is replaced by wire carrying the flow of electrons, and the a current alternating is changing direction with a period of seconds it will force the wire to swing back and forth just as the discharge does.).
www.scitechantiques.com /MMs_project   (716 words)

  
 Gas Discharge Tube Surge Arresters, and SAN-EARTH M5C Conductive Grounding Cement
Sankosha has been selling gas tube arresters in the U.S. since the seventies and Sankosha U.S.A., Inc., the company’s 100% owned subsidiary, was established in 1987 to better service the growing market in the Americas.
Sankosha gas discharge tubes are available in axial leaded, radial leaded, surface mount, and special packages.
High voltage gas tube models like the Y08SV-312B are designed for power supply applications where HiPot testing is required, and we also manufacture very small gas tube arrester models for surface mount applications where real estate is at a premium.
www.sankosha-usa.com   (624 words)

  
 Gas Discharge Tubes   (Site not responding. Last check: 2007-10-31)
A gas discharge tube is ussually be produced by using colored tubing or fluorescent coatings insiide the tubes SRC Devices Inc. is a manufacturer of relays reed switches reed relays gas discharge tubes and proximity sensors for electtronic industry customers worldwide G continuous discharges through the air.
SRC Dvices Inc. is a manufacturer of reed switches reed relays gas discharge tubes and electronic proximity sensors for electronic industry customers worldwide If you are ovedrriving gas discharge tubes like this then they will Author To pic Display For Noble Gas Discharge Tubes Read times glosssary of terms.
Joslyn's Gas Discharge Tubes protect telephone RF hgih speed data signal and associated due to the type of gas and fill and physical configuration used in.
tbbs.corluge.com /gas-discharge-tubes.html   (437 words)

  
 Gas Tube Surge Arresters, Gas Discharge Tube and SAN-EARTH Conductive Cement
Gas Discharge Tubes (GDT’s) have proven effective in protecting millions of set top boxes from damage caused by abnormal voltages entering through power lines.
For Class I set top boxes, the specialists at UL have determined that the use of gas discharge tubes Recognized under the 5th Edition of UL Standard 1414 as protectors in the power supply circuit is acceptable.
However, they have further ruled that only “gas-tube voltage surge suppressors” (gas discharge tubes) meeting the Y2 requirements of the 6th Edition of UL 1414 provide the double or reinforced insulation required for Class II boxes under the UL 6500 Standard.
www.sankosha-usa.com /settop.asp   (753 words)

  
 Gas Discharge Tube Arresters: World Markets: 2004-2008
Author's note: The gas discharge tube markets continue to be viable markets in Europe and Asia, while in the Americas, the acceptance of solid state thyristor technology has seriously impacted the market, especially in central office applications.
However, there is new interest in gas tubes, especially in station class applications because of thier low inherent capacitance and inductance which limits interference with video signals, which is important for the future of cable modem markets.
Gas Discharge Tubes; Vertical Integration; Module Assembly 231
www.electronics.ca /reports/components/gas_discharge_tube.html   (189 words)

  
 SRC Devices - Applications/Tech. Support - Gas Discharge Tubes FAQ   (Site not responding. Last check: 2007-10-31)
High voltage transients are the result of either direct or induced voltages from lightning or the on/off switching of high current, inductive loads such as HVAC equipment.
When a transient voltage occurs on the power/signal line that exceeds the "breakdown" voltage of the GDT, the gas inside the cylinder ionizes and begins to conduct electricity.
It is the voltage at which the gas in the GDT will ionize between the electrodes, and conduct electricity.
www.srcdevices.com /appsupport_gdtfaq.html   (684 words)

  
 Jochen's High Voltage Page : Gas discharge with a rotary vacuum pump
The last picture at perhaps 1/10 atmospheric pressure is a time exposure - the discharge is limited to a narrow tube which moves rapidly around, growing and shrinking in length.
Gas discharge at increasing pressure (left to right).
Permission to copy and publish this document or parts of it on the WWW is granted until explicitely revoked, under the condition that it is accompanied by this or a simliar copyright notice, including my name and the original URL.
www.kronjaeger.com /hv/hv/exp/pump/index.html   (366 words)

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