Where results make sense

About us   |   Why use us?   |   Reviews   |   PR   |   Contact us

Electrical filament - Wikipedia, the free encyclopedia electrical filament is a thread of metal, usually tungsten, which is used to convert electricity into heat and light for the incandescent light bulb as made in 1878 by Joseph Wilson Swan, among others. An electrical current travels through the filament and because of the electrical resistance of the filament makes it white-hot and generates light. Electrical filaments are used in hot cathodes of various types of vacuum tubes and electron guns as sources of electrons. en.wikipedia.org /wiki/Electrical_filament   (212 words)

Filament - Wikipedia, the free encyclopedia Look up filament in Wiktionary, the free dictionary. Filament propagation, diffractionless propagation of a light beam Solar filament, a structure in a solar corona en.wikipedia.org /wiki/Filament   (97 words)

Filament wrapped electrical assemblies and method of making same - Patent 4656555 An electrical assembly comprising a plurality of electrical components aligned in a row under an axial load and wrapped with filament windings. The foregoing objects are basically attained by an electrical assembly comprising a plurality of electrical components aligned in a row which are placed under a high axial load, and then tightly coupled by means of a filament winding. The resinous compound may be applied to the filament winding by any number of means such as pre-coating the filament in a resinous bath, or applying the resinous compound to the filaments after the components have been wrapped. www.freepatentsonline.com /4656555.html   (3935 words)

Hexapedia - Filament (via CobWeb/3.1 planetlab2.cs.umd.edu)   (Site not responding. Last check: 2007-10-21) Contrary to fibres (or staple fibres) which are cut to a selected length, the word "filament" is used in the textile industry to designate an endless or continuous object, the length of which is only limited by the capacity of the spool whereon the filament is wound. An electrical filament is used to convert electricity into heat and/or light and refers to elements made of some kind of wire. Filaments are commonly found in traditional light bulbs. www.hexafind.com.cob-web.org:8888 /encyclopedia/filament   (175 words)

Filament - Definition, explanation Filament, also known as monofilament, is also used in wigs [1] to aid in breathability of the base that the hair is attached too. In solar astronomy, a filament is a strand of cool gas suspended over the photosphere by magnetic fields, which appears dark as seen against the disk of the Sun. In cosmology, a filament is the organizational largest structure of the universe, consisting of superclusters arrayed against voids and supervoids. www.calsky.com /lexikon/en/txt/f/fi/filament.php   (590 words)

Flexible, rollable photovoltaic cell module - Patent 4574160 Electrically conductive filaments (20) are alternately connected to contact points (31) on the electrically conductive substrate layer (22) of one cell strip (11) and to contact points (32) on the transparent electrically conductive layer (24) of another cell strip (11). An electrically conductive filament is alternately connected to the electrically conductive substrate layer of one photovoltaic cell strip and to the transparent electrically conductive layer of another photovoltaic cell strip. Electrical power generated by each cell 21, as a result of its exposure to an activating light source, is collected from the transparent layer 24 by grid 30 and directed to the mid-point thereof. www.freepatentsonline.com /4574160.html   (6054 words)

Tungsten Filament Application Notes   (Site not responding. Last check: 2007-10-21) The resistance of the filament rises to a value five to ten times the cold resistance, which causes the amount of current drawn by the lamp to stabilize and the lamp to emit a stable light output. The tungsten bromide compound reacts the filament of the lamp and deposits the tungsten on the filament and is freed to repeat the cycle again. Filament shapes used for lamps are classified into several different forms according to the filament sizes (filament diameter and length) and shock resistance. www.gilway.com /html/appl-tungsten.html   (1241 words)

Compec Inc. - Filament Wound Products Comptec manufactures custom filament wound products for many markets, including electrical power equipment, aerial lift truck booms, pressure vessels, filter chambers, radomes for antennas, drive shafts, fuse tubes, gas couplings, light weight rolls for the paper and plastic making industries, and other mechanical applications in the aerospace, military and chemical process industries. Filament wound products are produced in diameters of 1/2" to 4 feet and lengths of 1/2" to 40 feet, and in a variety of shapes including round, square, rectangular, tapers and local build ups. Our filament winding process utilizes a resin matrix and a reinforcing fiber wound in a precise pattern to produce the ultimate mechanical strength properties required of each specific application. www.comptecinc.com /fwp.htm   (155 words)

Class 315: ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS / U.S. Patent Classification Definitions Electric lamps and electric space discharge devices of any type (including cathode-ray tubes) with or without a discharge control device, combined with other circuit elements all of which (other than a mere source of current and/or potential supply if claimed) are structurally combined therewith to form a unitary device. Patents claiming an electric lamp or discharge device structure and means broadly to supply electric energy or potentials thereto are classified elsewhere as a lamp or discharge device structure. 324, Electricity: Measuring and Testing, 403 for electrical circuits, apparatus, and methods which are limited in their use to testing the operativeness or determining the characteristics of electric lamps or electric discharge devices of any type and which are limited in their use to the sole purpose of such testing. www.uspto.gov /web/offices/ac/ido/oeip/taf/def/315.htm   (14444 words)

Quench Air Control System - Selectronics, Inc. Monitor and quantify the filament cooling effort (quench) on the cooling effort quench on spun synthetic fibers and effect an accurate control of the quench air flow to regulate a constant quench condition despite variations in supply air temperature, humidity, density, pressure and filter clogging. The objective of the "quench" process is to remove heat energy from the Dacron filament bundle on-the-fly and therefore reduce its temperature from the high level required by the extrusion process to a lower level that will lessen the tendency of the individual filaments to stick together or to any other surface. As this composite air flow passes over the filaments the air molecules impinge the Dacron molecules and the difference in the temperature (or molecular energy level) between the Dacron and the air causes heat transfer from the warmer to the cooler. www.selectronic.com /QAC.htm   (1444 words)

Incandescent light bulb   (Site not responding. Last check: 2007-10-21) The incandescent 'light bulb uses a glowing wire filament heated to white-hot by electrical resistance to generate light (a process known as thermal radiation). The bulb is the glass enclosure which keeps the filament in a vacuum or low- pressure noble gas or a halogen gas in the case of quartz -halogen lamps (see below). Where the filament is electrical resistance is higher (due to the cross-section) and the filament heats up more the rate of evaporation further at that The end point of this process is failure of the filament. www.freeglossary.com /Incandescent_light_bulb   (2368 words)

Titanium - Wikipedia, the free encyclopedia (via CobWeb/3.1 planetlab2.cs.umd.edu)   (Site not responding. Last check: 2007-10-21) It is paramagnetic (weakly attracted to magnets) and has a very high electrical conductivity and thermal conductivity. Titanium oxide is produced commercially by grinding its mineral ore and mixing it with potassium carbonate and aqueous hydrofluoric acid. For example; cuprotitanium (rutile with copper added is reduced), ferrocarbon titanium (ilmenite reduced with coke in an electric furnace), and manganotitanium (rutile with manganese or manganese oxides) are reduced. en.wikipedia.org.cob-web.org:8888 /wiki/Titanium   (3032 words)

First light - 28 January 2006 - New Scientist   (Site not responding. Last check: 2007-10-21) When the current is switched off, the filament is surrounded by the warm structure of the bulb, so it changes temperature more slowly than when it is switched on. The filament therefore has a much greater chance of blowing when switched on than when it is operating or when it is cooling after being switched off. An incandescent lamp produces light by heating a tungsten wire filament to about 2500 °C. At high temperatures tungsten atoms evaporate from the surface of the wire, causing the flening sometimes seen on the inside of the lamp's glass envelope. www.newscientist.com /backpage.ns?id=mg18925362.400   (918 words)

Electricity for Boaters 101 - Nautical Know How Since the majority of failures in boating have to do with something electrical, we thought it might be a good idea to post a series of articles on electricity and trouble shooting. The same is true with electricity, with greater voltage (pressure) the flow of electrical current increases though the wire and resistance (Ohms) also increase. Consequently the filament in the 6 Volt bulb must have a lower resistance than the 12 Volt bulb so that double the current will flow through its filament even though only half the pressure or voltage is there to make the current. www.boatsafe.com /nauticalknowhow/electricity.htm   (1133 words)

Electrical Engineering   (Site not responding. Last check: 2007-10-21) The Word electricity comes from the Latin term electricus, meaning to "produce from amber by friction." This term has its roots in the Greek term elektor, which means beaming sun. Modern milestones in the discovery and harnessing of electricity began in 1729 with Stephen Gray's discovery of the conduction of electricity. Electrical Engineering includes occupations concerned with the application of the laws of electrical energy and the principles of engineering for the generation, transmission, and use of electricity. www.edasolutions.com /Groups/ElectricalEngineering.htm   (3099 words)

How to improve Incandescent Halogen, Sodium Halogen, Mercury Vapor and similar lamps   (Site not responding. Last check: 2007-10-21) In the shown illustration, the tungsten filament or the gas discharge arc (depending on the lamp type) inside the inner globe is shown in yellow. This means that on one side of the lamp, the electrical conductor will block most or all of the light from the filament or electrical arc. This alteration means that the electrical conductor is never running parallel to the filament or gas discharge arc, and the shadow is virtually eliminated. nemesis.lonestar.org /ideas/electricity/lamps/improve_a_lamp.html   (429 words)

Pinball News - First and Free The fact that the filament actually burns when electricity is applied is the main reason that bulbs eventually burn out. Standard filaments are virtually unsupported and stretch from one conductor to the other. The filament actually moves under the electrical and physical pressures in a pinball machine. www.pinballnews.com /learn/lamps.html   (1364 words)

Filament Wound Tubes Janco filament wound tubes consistently meet and exceed strength and performance requirements. Filament winding is a process which draws reinforced filaments (continuous strands), mat or veil through a resin bath and winds them onto a mandrel. Janco is one of the few companies that produces filament wound tubes with inserts or over core materials, offering the design engineer unique design options. www.jancocomposites.com /filament_wound_tubes.htm   (171 words)

Methanometers and Flammable Gas Detectors site sponsored by App-Tek International It was, however, more common for early methanometers to use sensors comprising two filaments arranged in a Wheatstone Bridge circuit and the MSA GP methanometer used such a sensor. One arm of the Wheatstone Bridge consisted of an electrical filament that was heated to a high enough temperature to burn any methane in the air sample that passed over the filament (housed within a porous flame proof barrier). By having an active and inactive filament in the same sample, a balancing control was established to allow for atmospheric variations such as relative humidity, temperature, and pressure. www.methanometer.com   (2908 words)

Class 362: ILLUMINATION / U.S. Patent Classification Definitions 439, Electrical Connectors, subclass 151 for a coupling part connector combined with means to allow repositioning of a mating part for engagement of different contacts on the mating part (e.g., a flash cube); and subclasses 620+ for an electrical connector combined with a named circuit component; and see the notes appended thereto. Subject matter having an electrical device which responds to radiant light energy by (1) varying its electrical characteristics, (2) generating an electric current, or (3) means for determining the intensity or quantity of light emanating from a particular location or direction, wherein any of the aforementioned three are combined with photos:graphic illumination structure. Subject matter wherein the transducer is an instrument for reproducing sounds at a distance wherein the sounds are converted into electrical impulses for transmission by wire and whose circuit is independent of the means for illuminating the transducer. www.uspto.gov /web/offices/ac/ido/oeip/taf/def/362.htm   (11537 words)

TTBS > Divisions / Units > Lab Services > Electrical Tungsten Filament Lamps (Household Bulbs): Testing of tungsten filament lamps to the requirements of the compulsory Trinidad and Tobago Standard (TTS 26 25 500:1993). Electrical Cables: Evaluation of electrical cables (armoured and unarmoured) and flexible cords for physical requirements, insulation resistance, conductor resistance and dimensional requirements to Trinidad and Tobago Standards (TTS) and British Standards (BS). The Electrical Laboratory acts as an Inspection center for UL, visiting each manufacturer several times per year to inspect the finished products to ensure that components of the required quality are being used in their manufacture. www.ttbs.org.tt /Electrical.php   (481 words)

Glossary - I Usually a small device containing an electrical filament used to ignite low explosives. The induction log is widely used in electrically conductive drilling muds where it works well provided the formations are not too resistive and borehole effects are known and not too great (i.e., mud not too saline and hole diameter not too large). The electrons (along with some negative ions) moving to the center electrode constitute a minute flow of electrical cur rent, the size of which is proportional to the number of gamma-ray interactions. www.spwla.org /library_info/glossary/reference/glossi/glossi.htm   (2411 words)

Definition of Filament Filament, also known as monofilament, is also used in wigs [1] (http://www.wigsalon.com/whatismono.html) to aid in breathability of the base that the hair is attached too. In astronomy a filament is a strand of cool gas suspended over the photosphere by magnetic fields, which appears dark as seen against the disk of the Sun. It is also used to refer to any thread like structure in the astronomical universe. www.wordiq.com /definition/Filament   (309 words)

3M Product Catalog : 3M™ Filament-Reinforced Electrical Tape   (Site not responding. Last check: 2007-10-21) Many of the 3M™ Filament Tapes were designed for applications needing both the dielectric strength of polyester film and the high mechanical strength of glass fiber. Offering the ultimate in low stretch, high tensile strength and edge-tear resistance, these products are more cost effective than glass cloth tapes in applications up to 130°C. They can be used to anchor lead wires and terminal strips and to band coils. A special paper-backed filament tape is also available to meet the unique requirements of high voltage oil-filled distribution transformers. products3.3m.com /catalog/us/en001/products/-/node_F6DLZ6FK02be/root_GST1T4S9TCgv/vroot_GST1T4S9TCgv/gvel_KP04SHW9CSgl/theme_us_oc_all_3_0/command_OCHandler/output_html   (201 words)

Incandescent light bulb - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-21) filament causes the halide to break down, releasing compact fluorescent bulbs 85 watt compact fluorescent bulb be radiated by the filament and is lost, filament that would not flen the inside of bulb.thelightening.net /filament.html   (364 words)

3M Utilities and Telecommunication : 3M™ Filament-Reinforced Electrical Tape   (Site not responding. Last check: 2007-10-21) 3M™ Filament Reinforced Electrical Tape 1276 is a 9 mil glass filament-reinforced paper backing with high-shear strength acrylic adhesive. 3M™ Filament-Reinforced Electrical Tape 1139 is a 6.5 mil polyester film/glass filament tape coated with an acrylic, pressuresensitiveadhesive.• UL Recognized, Class F (155°C)• Solvent resistant without thermosetting• High breaking strength• Suitable for heavy duty use 3M™ Filament-Reinforced Electrical Tape is a 6.5 mil polyester film/glass filament tape coated with a thermosetting, pressure-sensitive rubber adhesive. products3.3m.com /catalog/us/en001/utilities_telecom/oem_electrical/node_SNQ9J867JDbe/root_GST1T4S9TCgv/vroot_GSHBRQT7DVge/gvel_BBGZX3B1QGgv/command_AbcPageHandler/theme_us_oemeletrical_3_0   (277 words)

Halogen So-called 'long-life' bulbs lighting fixtures filament temperature of shorter life bulbs results in tungsten wire, through which an electrical current is mica lamp the filament that have evaporated the most. Another problem with dimming of halogen lamps cases involving very thin filaments, the filament temperature North Korea, Sudan, Syria, Serbia, Taliban-controlled portions of halogen.ezlampshop.net   (1205 words)

Book Supply Bureau - Standards Online Tungsten filament lamps for domestic and similar general lighting purposes - Performance requirements Amendment 1 - Tungsten filament lamps for domestic and similar general lighting purposes - Performance requirements Amendment 2 - Tungsten filament lamps for domestic and similar general lighting purposes - Performance requirements www.standardsindia.com /iec_TC2.asp?TC=34A   (656 words)

Try your search on: Qwika (all wikis)

About us   |   Why use us?   |   Reviews   |   Press   |   Contact us   Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.