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Topic: Electrical contacts

Related Topics

Electric switch

Electrical conductor

Silver Whiskers

Circuit breaker

Silver

Electrical conductivity

Beryllium

	Deringer Contacts is the source for electrical contacts, rivets, welded or furnace brazing contacts (Site not responding. Last check: 2007-10-20)
		Contact design, material, and application determine which type of contact should be used.
		Normally, the head of the contact is the current-carrying portion, and the shank is used as a means of attachment.
		When assembled on a riveting machine, the contact is fed shank down through a hole in the blade and the tubular portion curled or rolled to hold the contact in place.
	www.jmney.com /Deringer1/contacts/manufacture.html (1371 words)

	Journal of Electronic Materials: Pressure Electrical Contact Improved by Carbon Black Paste
		Pressure electrical contacts with a contact resistivity of 2 × 10^sup -5^ ohm.cm^sup 2^ have been attained using a carbon fl paste of a thickness of less than 25 µm as the interface material.
		They can be in the form of pressure contacts (i.e., contacts made by the use of pressure to hold the mating surfaces together) and pressureless contacts, which are made without pressure by the use of an electrically conductive joining medium, such as solder, silver epoxy, and silver paint.
		In fact, a pressure contact is referred to as a separable interconnect.1 In contrast, disconnection is not convenient for non-pressure contacts, as it may require heating or the application of a considerable mechanical force.
	www.findarticles.com /p/articles/mi_qa3776/is_200403/ai_n9405588 (1317 words)

	World Intellectual Property Organization (Site not responding. Last check: 2007-10-20)
		The front portion of each channel accommodates an engageable portion of the electrical contact and the rear portion accommodates a connector end of the electrical contact for connecting it to an electrical cord.
		contacts, the crimped portion of the electrical contacts and the bared portions of the wires 14, thereby enabling use without an overmolding layer.
		The electrical contacts 28 have an engageable gripping portion 30, a wire crimp portion 32 and a flat bridge portion 34 therebetween.
	www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=01/15279.010301&ELEMENT_SET=DECL (2608 words)

	Solar Energy Technologies Program: Electrical Contacts
		Grid contacts on the top surface of a typical cell are designed to have many thin, conductive fingers spreading to every part of the cell's surface.
		Electrical contacts are essential to a photovoltaic (PV) cell because they bridge the connection between the semiconductor material and the external electrical load, such as a light bulb.
		Another challenge in cell design is to minimize the electrical resistance losses when applying grid contacts to the solar cell material.
	www.eere.energy.gov /solar/electrical_contacts.html?print (650 words)

	Aging and Degradation in Electrical Contacts Research Brief
		Clean electrical contacts are generally maintained by controlling the atmosphere in hermetically sealed devices - a method that is not totally effective for extended life applications.
		Electrical contact degradation is a concern for stockpile life extension of stronglink switches and environmental sensing devices.
		After disassembly, the electrical contacts are screened by a combination of measurements of local contact resistance, surface roughness, surface chemical compositions, and particle screening.
	www.sandia.gov /materials/sciences/factsheets/AgnDegrad.html (529 words)

	Deringer Contacts is the source for electrical contacts, rivets, welded or furnace brazing contacts (Site not responding. Last check: 2007-10-20)
		Developing the best contact solution for a specific application is complex because so many factors (and their interrelationships) must be considered.
		Contact failure may be said to occur when the closed resistance is too high or the open resistance is too low.
		Contact transfer is the term employed when the contact material moves from one contact to another.
	www.jmney.com /Deringer1/contacts/design.html (640 words)

	Module for mounting electrical contacts - Patent 4227768
		A module for mounting electrical contacts comprises a base formed of resilient synthetic plastics material having means for mounting an electrical contact and a male and female coupling element disposed so that two modules can be connected to one another in end-to-end relation by means of the coupling element.
		The electrical contact units are joined by shaping the male and female coupling elements to make interference fits with one another.
		It has been found that when these contact units are connected to form an electrical contact strip there is a tendency for them to move relative to one another.
	www.freepatentsonline.com /4227768.html (1534 words)

	New Page 1
		Electrical contacts are found almost anywhere electrical equipment is used, in applications such as automotive, consumer appliances, and public transportation.
		Because of the nature of their function, electrical contact materials are subject to wear, and durability testing is an important part of the contact's design.
		A pictorial schematic of the Micro-Tribometer used in durability testing of electrical contacts is shown in Figure 1 and a photograph of the Micro-Tribometer with test specimens in place is shown in Figure 2.
	www.cetr.com /Brochures/Durability_Testing_Electrical_Contacts.htm (945 words)

	Supplier of Precision Stampings, Electrical Contacts, Engineered Assemblies and Specialty Products ISO 9001:2000, QS9000
		Electrical contacts, electrical contact assemblies, precision stampings and engineered products for leading companies around the world.
		With locations in Massachusetts, Ohio, Mexico and China, we are a world-class manufacturer of electrical contact assemblies, welded contacts, button contacts, precious metal contacts, composite rivet contacts and solid rivet contacts.
		Operations include the production of powder metal contacts and assemblies for circuit breaker applications, continuous and discrete brazed contact assemblies, milled and reamed hinges for transfer switches, pressed and sintered contacts, heat sinks and spreaders, multi-piece assemblies and electrical contacts made of silver tungsten, silver tungsten carbide, silver graphite and copper tungsten.
	www.brainin.com (232 words)

	MRC TechTip - POOR ELECTRICAL CONTACTS (Site not responding. Last check: 2007-10-20)
		Electrical gremlins often arise from poor electrical contacts caused by corrosion to relay, fuse and connector contacts.
		After cleaning, spray both sets of contacts with an off the shelf electrical contact cleaner and lubricant.
		DO NOT use grease or engine oil directly on contacts or the plastic surrounds - it doesn’t conduct at all well (so why bother cleaning in the first place), is messy and, because it is an excellent lubricant, may cause the connector to fall apart.
	www.maserati-rc.org /techtips/Techtip020.htm (309 words)

	Articles - Contact
		Contacts generally consist of metal buttons or wires that are plated with a good electrical conductor that is also corrosion-resistant, such as gold or silver.
		Contact is the title of a science fiction novel by Carl Sagan, and film adaptation.
		Contact, in the Culture novels of Iain M. Banks, is the name of the Exploration (and sometimes military) corp of the Culture.
	www.sterlingsilvercenter.com /articles/Electrical_contact (300 words)

	(WO 01/15279) PREMOLD WITH COVERED CRIMP (Site not responding. Last check: 2007-10-20)
		(57) A premold (10) for housing the electrical contacts (28) of an electrical connector has a base (26) with a plurality of channels (36, 38) extending from a front surface to a rear surface thereof, each of the channels (36, 38) accommodating therein an associated electrical contact (28).
		The front portion of each channel (36) accommodates an engageable portion (30) of the electrical contact (28) and the rear portion (38) accommodates a connector end (32) of the electrical contact (28) for connecting it to an electrical cord (12).
		The front portion (36) and the rear portion (38) of the channels (36, 38) shield the electrical contacts (28) from inadvertent contact.
	wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=01/15279.010301&... (319 words)

	silver - Hutchinson encyclopedia article about silver
		It occurs in nature in ores and as a free metal; the chief ores are sulphides, from which the metal is extracted by smelting with lead.
		It is the best metallic conductor of both heat and electricity; its most useful compounds are the chloride and bromide, which darken on exposure to light and are the basis of photographic emulsions.
		Silver is used ornamentally, for jewellery and tableware, for coinage, in electroplating, electrical contacts, and dentistry, and as a solder.
	encyclopedia.farlex.com /silver (285 words)

	Electrical Contacts and Conductors made using Slide Form technology - Hamond Industries
		The challenge was to make formed contacts that could be inserted by hand into the moulded plastic half-shell and would have sufficient spring pressure to stay put until the second half-shell was put over top.
		We now make the formed contacts that contact the power elements of a cigarette lighter outlet and bring the power in to the interior components.
		The contacts are of accurate length and spring force so that the controller can be swapped by a single person against the force of over a hundred contacts, and so that contacts make and break in a specific sequence.
	www.hamond.com /ElectricalContacts.htm (422 words)

	Ohmic Electrical Contacts to Compound Semiconductors (Site not responding. Last check: 2007-10-20)
		The first general concept is that such reactions disrupt the inevitable layer of interfacial contamination, and may negate their effects upon contact resistance.
		This is similar to the scheme of silicide contacts on Si devices.
		General rules have been developed on the basis of this mechanism to predict formation of lower resistance contacts to compound semiconductors in general, and application of these rules to GaN will be discussed.
	cmm.mrl.uiuc.edu /SA03/abstracts/holloway.htm (419 words)

	High Voltage Supply Products (Site not responding. Last check: 2007-10-20)
		High Voltage Supply recently announced that an application for U. Patent protection has been filed on a revolutionary new contact design that provides a means of detecting when contacts have eroded or worn to a point at which they should be changed.
		What started as a simple re-design of the contacts ended in an eight year program that resulted in design enhancements to all of the major components within each to these tap changers.
		Nichols was originally contacted by Pacific Gas & Electric and asked if it were possible to improve the existing design of certain contacts in order to accommodate the higher loading.
	www.highvoltagesupply.com /producta.htm (282 words)

	Checking electrical contacts on cartridge (Site not responding. Last check: 2007-10-20)
		It turns out that certain blocks of contacts cross-connect to other blocks, with a few K ohms resistance between them.
		What was interesting is that a pair of contacts might be disconnected on a used cartridge where the new cartridge had them connected.
		But what I cannot solve is a type of electrical problem, where several streaks form a pattern which is too coincidental for it to be only clogged jets.
	atlascopy.com /_inkjet/00000124.htm (259 words)

	9899. Restoring Corroded Electrical Contacts
		Often I get a part where the gold contacts are occasionally corroded which causes the part not to work.
		If I scrub these contacts, with fine sand paper, the part is temporary usable, but because the gold layer is removed the contacts will quickly corrode again.
		Contact Brooktronics a company that I highly recommend.
	www.finishing.com /98/99.shtml (207 words)

	Quality Retiping By Precision Electrical Contacts Company
		Precision Electrical Contacts Company, located just a stones' throw from the beautiful Pecos river in Carlsbad, New Mexico, was founded as a "cottage industry" in 1976 by Neal and Rosemary Stewart.
		Each electrical contact base and tip/cap are inspected after each step in our retiping and rebuilding process.
		In fact, some Square D Sales Engineers recommend Precision Electrical Contacts Company when they are contacted regarding electrical contacts for their obsolete contactors.
	www.retip.bizland.com (1239 words)

	Electrical contacts on MiniDV tapes. - The Digital Video Information Network
		There seems to be an equal number of each that have the metal contacts, some don't.
		So, a tape with contacts means that it has an IC chip inside.
		I'v checked inside the XL-1s and it has 4 metal pins wich are for the metal contacts of the tapes.
	www.dvinfo.net /conf/showthread.php?threadid=11570 (819 words)

	Contact Technologies Inc. of St. Marys, your supplier of custom electrical contacts!
		Contact Technologies is a manufacturer of electrical contacts and other precision motor brushes produced from powder metal technology.
		Contacts can be produced from a variety of precious metal materials including silver graphite, silver tungsten, copper graphite, copper tungsten and silver molybdenum.
		Some examples of specialized contact materials that can be provided include alloyed brass, gold graphite, silver nickel, silver tungsten carbide and silver tin oxide.
	www.agcti.com (154 words)

	AllRefer.com - silver, Compound & Element (Compounds And Elements) - Encyclopedia
		In many of its properties it resembles copper and gold, the elements above and below it in group Ib of the periodic table.
		Silver alloys are used in dental amalgams and for electrical contacts.
		Silver was one of the first metals to be used by humans (see silverwork).
	reference.allrefer.com /encyclopedia/S/silver.html (489 words)

	Intensive Course on Electrical Contacts
		Principles of electrical conduction through metallic constrictions, temperature of joule-hearted contact spots, lubrication fundamentals, effect of conductive, insulating and intermetallic layers, and characterization of surface roughness.
		The fundamentals of contact action during the making and breaking of an electrical circuit, covering a range from low-level through industrial control switching devices and circuit breaker.
		He developed novel analytical techniques for electrical contacts, high-resolution microscopy, nanoindentation measurements, and is the inventor of a novel brazing technology for aluminum.
	www.ewh.ieee.org /soc/cpmt/tc1/h2003/classinfo.html (745 words)

	Electrical Switchgear Contacts
		Copper due to its high electrical conductivity is the preferred material in the design of switches, circuit breakers and disconnectors.
		It is recommended for abrasive applications as contacts where wear resistance is required.
		However the electrical conductivity of Beryllium Copper must be borne in mind before designing any contacts / terminals in the said material.
	www.mipalloy.com /mipalloy/products/electricalswitchgearcontacts.html (230 words)

	Electrical contacts & Silver tipped contacts by CCSI - Electrical contact assembly, Electrical, contact assemblies, ...
		Electrical contacts and Silver tipped contacts by CCSI - Electrical contact assembly, Electrical, contact assemblies, Arc Chutes, Arc Barriers, Overhead crane parts, Carbon brushes, Conductor systems, Electricity, Electric, AC, DC, Alternating current, Direct current, Machining services, Electrical Replacement Parts.
		Continental Contacts and Specialty Items is a manufacturer of the highest quality silver tipped, silver tungsten, and copper electrical contacts.
		CCSI also specializes in contact shoes and wheels for overhead cranes; polyester, fiberglass, and porcelain insulators; shunts, connecting cables, and grounding straps; and metal, carbon, and graphite slide shoes.
	www.continental-contacts.com (159 words)

	Santovac 5GB Vacuum Grease - Use on Electrical Contacts - SPI Supplies (Site not responding. Last check: 2007-10-20)
		PP's significantly reduce contact resistance and will increase the number of cycles (insertions and withdrawals) into the millions as opposed to just a few thousands of cycles for unlubricated contacts.
		The metal asperities, or roughness of the contact surface, are sufficient to maintain the contact.
		After the contact is coated with the lubricant film, the connector is mated.
	www.2spi.com /catalog/vac/santovac-5-vacuum-grease1.html (438 words)

	Electrical Contacts - Normandy Machine Company, Inc.
		can help, whether you need a contact refurbished — a new contact that meets or exceeds OEM Specs — or a "NMC Design One" upgrade that will extend contact life.
		Catalog is a comprehensive list of parts and part numbers for all makes and models of Load Tap Changers (LTC's) and Oil Circuit Breakers (OCB's) plus various other parts needed by substation maintenance crews.
		Contact Normandy for the answers to your contact problems!
	www.normandymachine.com /contacts.htm (139 words)

	Meridian Labs - Rotocon high performance rotary electrical contacts
		environmentally sealed rotary contact assemblies are the high performance electrical link between stationary and rotating components.
		Unlike conventional slip ring designs which rely on sliding, wear prone, solid metal to metal contacts, all ROTOCON models use environmentally sealed rotary metal film contacts which are inherently arc-free, maintenance free and explosion proof.
		A total of 4 contacts rated at 200 amps, 15 contacts rated at 35 amps, and 20 contacts rated at 30 amps were constructed along a common shaft with a special housing mount flange.
	www.meridianlab.com (275 words)

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