Coupling (electronics)

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Topic: Coupling (electronics)

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	Coupling - Wikipedia, the free encyclopedia
		In telecommunication and electronics, coupling is the desirable or undesirable transfer of energy from one medium, such as a metallic wire or an optical fiber, to another medium, including fortuitous transfer.
		Coupling has other specific meanings in physics, electronics, mathematics, programming and entertainment.
		Coupling with reference to living beings refers to mating or to the act of sexual intercourse.
	en.wikipedia.org /wiki/Coupling (379 words)

	Coupling - Wikipedia, the free encyclopedia
		In telecommunication and electronics, coupling is the desirable or undesirable transfer of energy from one medium, such as a metallic wire or an optical fiber, to another medium, including fortuitous transfer.
		Coupling has other specific meanings in physics, electronics, mathematics, programming and entertainment.
		Coupling with reference to living beings refers to mating or to the act of sexual intercourse.
	en.wikipedia.org /wiki/Coupling (370 words)

	Doug's R-E Loop Article Page
		That is done by coupling the output of the vertical antenna to the loop so that the voltage induced in the loop by the coupling is 90 degrees out of phase with the voltage the passing wave induces in the vertical antenna.
		Loop antennas, when used at low frequencies, are subject to that effect because their size is aonly a fraction of a wavelength, and they pick up interference from a signal derived from the electric, rather than the magnetic, field.
		When designing an active whip antenna, we considered the whip to be a voltage source with a high internal impedance requiring current amplification, and (to reduce attenuation due to a mismatch) we wanted the preamplifier also to have a high input impedance.
	user.netonecom.net /~swordman/Radio/re-loop-article.htm (370 words)

	Coupling - Wikipedia, the free encyclopedia
		In telecommunication and electronics, coupling is the desirable or undesirable transfer of energy from one medium, such as a metallic wire or an optical fiber, to another medium, including fortuitous transfer.
		Coupling with reference to living beings refers to mating or to the act of sexual intercourse.
		The term "coupling" is often used for Angular momentum coupling, the interaction between two nuclei in Nuclear magnetic resonance.
	en.wikipedia.org /wiki/Coupling (370 words)

	Inductive coupling TutorGig.co.uk Encyclopedia
		In electronics, 'inductive coupling' refers to the transfer of energy from one circuit component to another through a shared magnetic field.
		Unintentional coupling is called cross-talk, and is a form of interference.
		High frequency energy sources generally use capacitive coupling.
	www.tutorgig.co.uk /ed/Inductive_coupling (370 words)

	Inductive coupling - Wikipedia, the free encyclopedia
		In electronics, inductive coupling refers to the transfer of energy from one circuit component to another through a shared magnetic field.
		An inductively coupled transponder comprises an electronic data carrying device, usually a single microchip, and a large coil that functions as an antenna.
		The two devices may be physically contained in a single unit, as in the primary and secondary sides of a transformer, or may be separated as in the antennae on a transmitter and a receiver.
	en.wikipedia.org /wiki/Inductive_coupling (213 words)

	Molecular Electronics
		Because molecular electronics borrows most heavily from current technologies, in the past few years it has advanced to the point that many major semiconductor-manufacturing companies, including IBM, Hewlett-Packard, and LG (Korea), are launching their own research programs in molecular electronics.
		How molecular orbitals align with the Fermi levels of electrodes, the coupling of molecular vibrations with charge transport through the molecule, and the nature of the molecule/electrode interface states are questions being addressed in various laboratories around the world.
		In molecular-electronics research, molecules are used to yield the active and passive components (switches, sensors, diodes, resistors, LEDs, etc.) of electronic circuits or integrated circuits.
	www.nae.edu /nae/bridgecom.nsf/weblinks/MKUF-5UZHMA?OpenDocument (1893 words)

	Organic Semiconductors, Organic Metals, and Conductive Organic Polymers
		This is strong electron-phonon coupling in potent sound-absorbing organic semiconductors such as inner-ear melanin.
		That is, Melanin is the first organic semiconductor used in an active electronic device, i.e., one where an electric field modulates current flow.
		Organic semiconductors span from quantum mechanics to human disease.
	www.organicsemiconductors.com (505 words)

	IBM Research Almaden Research Center Science and Technology Molecular Electronics
		The molecular electronics group at the IBM Almaden Research Center, like many other teams around the world, is investigating novel means of incorporating conjugated organic molecules into functional electronic nanoscale devices.
		Among the issues which are being addressed in our program are: novel methods of patterning, including directed self-assembly, where the "seeds are planted" by soft lithographic techniques; biomimetic approaches to molecular assembly; and coupling chemistry to connect functional organic molecules to metal electrodes with minimum interface resistance.
		Nevertheless, it is clear that physical and chemical principles apply to the continuing reduction in the size of electrical components, and that the ultimate limit lies at the length scale of atoms and molecules, namely about 1 nm.
	www.almaden.ibm.com /st/chemistry/me/index.shtml (218 words)

	Purdue simulation to help merge molecules with silicon electronics
		Molecular electronics could make it possible to manufacture hardware by "growing" circuits and devices in layers that may "self-assemble," similar to the growth of structures in living organisms.
		One challenge, however, in developing molecular electronics is to better understand how electricity is conducted between molecules and silicon contacts connecting various devices in a circuit, said Geng-Chiau Liang, a postdoctoral research assistant in Purdue's School of Electrical and Computer Engineering.
		"All traditional research in molecular electronics has focused on combining molecules with metal contacts, but we've been studying the interaction of molecules and silicon instead of metals because the computer industry is built on semiconductors, which is silicon."
	news.uns.purdue.edu /UNS/html4ever/2005/050816.Liang.buckyballs.html (1005 words)

	Ammeter
		In high voltage AC circuits an inductive coupling adapter converts the magnetic field around a conductor into a small current that can be easily read by a meter.
		Most of the current flows through the shunt, and only a small fraction flows through the meter.
		With this solution, arbitrarily large currents can be measured with a single meter.
	www.sciencedaily.com /encyclopedia/ammeter (1005 words)

	pres2001.htm
		Winter Colloquium on the Physics of Quantum Electronics, (Snowbird, Utah, Jan. 7-12, 2001).
		Gibbs and G. Khitrova, "Radiative Coupling effects in Semiconductors", COEDIP 2001 (Center for Optoelectronic Devices, Interconnects and Packaging), 12 April 2001.
		Gibbs, "Quantum correlations in the nonperturbative regime of the of semiconductor microcavities," 31
	www.optics.arizona.edu /qnos/presentations/pres2001.htm (614 words)

	IP8 Small Electronics and Quantum Chaos
		This success story applies when the unavoidable coupling of electrons to the environment and each other is small.
		The transport properties of electronic devices below the few-micrometer scale show signatures of quantum interference and quantum confinement when the devices are cooled near absolute zero.
		This talk will summarize recent experiments measuring random (but perfectly repeatable) fluctuations in conductance of these structures - known as quantum dots - and the connection between the universal statistical properties of these fluctuations and the universal spectral statistics of random matrix theory and quantum manifestations of chaos.
	www.siam.org /meetings/archives/ds97/ip8.htm (164 words)

	Robot Mechanics, Linkages, Mechanical Devices, and Gadgets
		Filled with easy-to-understand illustrations, this unique guide describes in detail how to: design robot propulsion systems; fabricate components for pneumatic systems; design simple hydraulic systems, gear trains and cams; and adapt off-the-shelf parts and components for use in electronics experiments.
		Material properties, speeds and feeds for machining of metals and plastics, and gear and thread geometry, are just some of the hundreds of tables that fill this book.
		Many of the devices are just simple combinations of gears, links, chains, and levers, that are well within the abilities of the Sunday garage tinkerer.
	www.robotbooks.com /mechanics.htm (164 words)

	The Flip Flop
		The Flip Flop is a symmetrical arrangement using two transistors with cross-coupling.
		The flip flop is also called a square wave oscillator and either the same circuit or a similar circuit is now available in an IC to produce clock pulses.
		These are the two states for the transistors in the Flip Flop circuit.
	www.talkingelectronics.com /FreeProjects/5-Projects/Page16.html (1856 words)

	Frequently asked questions about the Counteract Electronic Rust Protection. How to protect your 4WD, new or used vehicle.
		None - CouplerTec employs technology known as Capacitive Coupling, the couplers are fixed to the vehicles painted surface and are not sacrificial, like anodes are.
		The systems life is indefinite, the electronics are solid state (no moving parts) and the electronic board is totally encapsulated in an epoxy resin that makes it completely sealed.
		CouplerTec released the latest advancement in capacitive coupling technology in February 2005.
	www.couplertec.com.au /faq.html (572 words)

	4WD Glossary & FAQ
		Viscous Coupling: An arrangement of discs in a viscous fluid that allows two shafts to rotate at the same or only slightly different speeds.
		A cheaper arrangement is to drive one axle via a viscous coupling or similar.
		BAS: Brake Assist System (Mercedes Benz, 1990s), electronics detect sudden application of brakes and increase braking effect under the assumption that this is, or should be, a panic stop.
	www.ebroadcast.com.au /ecars/FAQ.html (2158 words)

	Samsung Develops 512Mb Flash Memory: Digital Photography Review
		Samsung Electronics has shipped samples of the 512Mb flash memory device and plans to start up full-scale production in the third quarter of this year.
		Samsung Electronics currently occupies around 40% of the world market for data storage flash memory devices.
		Development of a high-coupling ratio cell decreased the high voltage necessary for programming, thus it not only improved crucial programming performance by 30%, but also paved the way for further scaling of design rule to 0.12-micron.
	www.dpreview.com /news/0101/01012102samsungflash.asp (441 words)

	Coupling
		In telecommunication and electronics, coupling is the desirable or undesirable transfer of energy from one medium, such as a metallic wire or an optical fiber, to another medium, including fortuitous transfer.
		Sony Electronics is taking its SAIT-1 drive to new heights, coupling the high-capacity format with the benefits of hands-free automation to deliver a compact tape library for small-to-midsized businesses, including those working with large databases, video production, broadcast applications, medical imaging and e-commerce transactions.
		Pendulumpendula or resonant circuits) by means of spring (device)springs or magnetic fields, etc. Characteristic for a coupled oscilation is the effect of beat/.
	www.infothis.com /find/Coupling (441 words)

	Head Loss -- Recommendations and Resources
		Loss in electronics is the ratio of the system output to system input
		In telecommunication, return loss is the ratio, at the junction of a transmission line and a terminating impedance or other discontinuity, of the amplitude of the reflected wave to the amplitude of the incident wave.
		In an optical fiber, the loss that takes place at any discontinuity of refractive index, especially at an air-glass interface such as a fiber endface, at which a fraction of the optical signal is reflected back toward the source.
	www.becomingapediatrician.com /health/68/head-loss.html (757 words)

	United States Patent Application: 0050179339
		Similarly, for an electrostatically coupled embodiment of the present invention, similar electronics could be connected through the substrate to conductive plates or pads present in the walls or floor of the trough.
		Electrical coupling may include, for example, physical connection or coupling between two components such that one component electrically affects the other, capacitive coupling, electromagnetic coupling, free charge flow between two conductors separated by a gap (e.g., vacuum tubes), and inductive coupling.
		The nanotube assemblies may include an array of transistors that are utilized in routing the current to the nanotubes for electromagnetically coupled assemblies, or are utilized in routing the application of voltage to nearby plates for electrostatically coupled assemblies.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&co1=AND&d=PG01&s1=ambient.AS.&OS=AN/ambient&RS=AN/ambient (10339 words)

	Field Effect Transistor : Discount Electronics
		HSS is a valuable asset when taking portraits outdoors because it lets you select large apertures to create a shallow depth-of-field, which separates your subject from the background.
		Wireless/Remote Flash Control - This exclusive Maxxum feature lets you use multiple Maxxum HS...
	www.cobourgpuc.com /218-Field-Effect-Transistor.html (1222 words)

	Fiber Coupled Laser Diode : Discount Electronics
		See live article Optical power budget Optical power budget: In a fiber-optic communication link, the allocation of available optical power (launched into a given fiber by a given source) among various loss-producing mechanisms such as launch coupling loss, fiber attenuation, splice losses, and connector losses, in order to ensure that adequate signal strength (...
		Find fiber coupled laser diode and more at Lycos Search.
		Shop for a diode laser on eBay or find thousands of other items to buy and sell.
	www.cobourgpuc.com /217-Fiber-Coupled-Laser-Diode.html (668 words)

	EE Times UK - Memory Bulletin: Flash-for-data sales to grow 56% in 2006
		The beneficiaries of this trend are NAND flash memory suppliers such Samsung Electronics Co. Ltd.
		Indeed, the increasing demand for portable MP3 players, digital still cameras and other consumer-electronics devices has been a major factor boosting the fortunes of the data flash memory industry.
		Single, dual or four-channel modules featuring a choice of front-end input mezzanines providing up to 3 GHz input bandwidth or switchable high impedance input coupling.
	www.eetuk.com /mr/news/showArticle.jhtml?articleID=175801393 (761 words)

	EMI and Power Supplies in Medical Electronics (MDDI archive, Feb 97)
		Interference almost always originates as differential mode, but both electric and magnetic field coupling paths are predominantly common mode, which means that the farther EMI gets from its source, the higher the percentage of common-mode coupling paths.
		The third threat is external interference that enters the power supply and either attacks the supply directly or passes through it to attack the device electronics.
		EMI coupling paths, which connect the interference source with a receptor, may be conducted, radiated, or a combination of the two.
	www.devicelink.com /mddi/archive/97/02/017.html (2052 words)

	Marine.com - marine electronics and boating supplies: Raymarine, Furuno, Garmin, Magellan, Awlgrip, more
		The primary reason for using a Bronze coupling nut is to eliminate thread seizure (galling) which is common where stainless threaded terminals thread into stainless bodies.
		When rotated, the coupling nut draws the threaded terminal into the turnbuckle body.
		A tapered lock nut locks the threaded terminal to the coupling nut and not the turnbuckle body.
	www.marine.com /pages/46124.html (2052 words)

	EMI and Power Supplies in Medical Electronics (MDDI archive, Feb 97)
		Interference almost always originates as differential mode, but both electric and magnetic field coupling paths are predominantly common mode, which means that the farther EMI gets from its source, the higher the percentage of common-mode coupling paths.
		The third threat is external interference that enters the power supply and either attacks the supply directly or passes through it to attack the device electronics.
		EMI coupling paths, which connect the interference source with a receptor, may be conducted, radiated, or a combination of the two.
	www.devicelink.com /mddi/archive/97/02/017.html (2052 words)

	Single in-line optical package - US Patent 5337398
		An optical package as defined in claim 2 wherein the optical receptacle means further comprises a lens holder including the plurality of alignment fiducials for supporting said coupling lens and mating with the plurality of fiducials formed on the silicon top major surface.
		The technique as disclosed is useful in the packaging of a single active optical device and associated electronics, a pair of optical devices and electronics (transceiver), or an array of any desired number of such components.
		Many of these unitary packages are relatively expensive, as a result of using a hybrid integrated circuit (HIC) arrangement for the electronics, with an optical subassembly attached to the HIC.
	www.patentstorm.us /patents/5337398.html (2052 words)

	EE Times UK - Samsung, Vodafone, Qualcomm team on HSDPA
		Under the three-way project, Samsung has developed the first commercially available HSDPA phone to be launched exclusively for Vodafone and plans to demonstrate the technology at the Consumer Electronics Show (CES) in Las Vegas next month.
		Single, dual or four-channel modules featuring a choice of front-end input mezzanines providing up to 3 GHz input bandwidth or switchable high impedance input coupling.
		Complimentary from IBM, Download the first chapter of andquot;Markets, Models andamp; Meta-Value in Consumer Electronics.andquot; Click to register for the first chapter and learn how IBM is adding value to organizations in the electronics industry.
	www.eetuk.com /showArticle.jhtml?articleID=175701376 (406 words)

	IEEE STARTS STANDARD TO SUPPORT BROADBAND COMMUNICATIONS OVER LOCAL POWER LINES
		Power companies face a number of issues in doing this, for example, how to assess the performance and safety of repeaters/routers, medium- and low-voltage coupling hardware, and other equipment before buying.
		The IEEE produces nearly 30 percent of the world's literature in the electrical and electronics engineering, computing and control technology fields.
		Through its members, the organization is a leading authority on areas ranging from aerospace, computers and telecommunications to biomedicine, electric power and consumer electronics.
	standards.ieee.org /announcements/pr_p1675.html (406 words)

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Topic: Coupling (electronics)

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In the News (Thu 23 May 13)