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Topic: Electrical bus

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War of Currents

Peripheral Component Interconnect

	Computer bus - Wikipedia, the free encyclopedia
		Early computer buses were literally parallel electrical buses with multiple connections, but the term is now used for any physical arrangement that provides the same logical functionality as a parallel electrical bus.
		The former referred to bus systems that were designed to be used with internal devices, such as graphics cards, and the latter to buses designed to add external devices such as scanners.
		An internal bus connects all the internal components of a computer to the motherboard (and thus, the CPU and internal memory).
	en.wikipedia.org /wiki/Computer_bus (1979 words)

	Electrical bus - Wikipedia, the free encyclopedia
		A bus often takes the form of an array of wires that terminate at a connector which allows a device to be plugged onto the bus.
		In an electrical laboratory, for example, a bare bus-bar will sometimes line the wall, to be used by the engineers and technicians for its high electrical current carrying capacity, which allows a convenient approximation to zero voltage, or ground in the US, and earth in the UK.
		In analysis of an electric power network a "bus" is any node of the single-line diagram at which voltage, current, power flow, or other quantities are to be evaluated.
	en.wikipedia.org /wiki/Electrical_bus (231 words)

	Bus - Encyclopedia.WorldSearch (Site not responding. Last check: 2007-10-21)
		A normal tourist bus carries about fifty passengers with their luggage, and may be considered the standard bus for long-distance travel.
		An electric trolleybus is a bus driven by electricity supplied from overhead wires by a pantograph or trolley.
		Bus services were also a focal point in the American Civil Rights Movement of the 1950s and 1960s in the United States.
	encyclopedia.worldsearch.com /bus.htm (2133 words)

	Bus - Wikipedia, the free encyclopedia
		In area where double-decker bus operation is not typical, including the United States, there have been numerous experiments using them on high-capacity routes, but often this has proved impractical because the infrastructure (bridges, overhead cables, etc) has not been designed for their additional height.
		A training bus is a special kind of bus that is used by bus companies for training the driving skills of bus drivers.
		A Gyrobus is an electrical bus that uses flywheel energy storage.
	en.wikipedia.org /wiki/Bus (2329 words)

	Bus - Open Encyclopedia (Site not responding. Last check: 2007-10-21)
		An electric trolleybus is a bus driven by electricity supplied from overhead wires.
		A neighborhood bus is (at least in the Netherlands, buurtbus) a complementary public transport service with minibus by volunteer drivers in rural areas, where regular public transport is not feasible.
		Bus services were also a focal point in the American Civil Rights Movement of the 1950s and 60s in the United States.
	open-encyclopedia.com /Bus (1712 words)

	United States Patent Application: 0040219397
		The present invention discloses: a server; an electrical module located within the server; a fuel cell, located within the server, for generating electrical power; and an electrical bus, located within the server, coupling the electrical power generated by the fuel cell to the electrical module.
		Preferably the communications bus 218 is a fiber optic cable, so as to keep the fuel cell device/server 202 electrically isolated, and thus not be as affected by any fluid leaks external to the fuel cell device/server 202.
		Preferably the electrical bus 216 voltage is monitored at or near the battery 217 connected between the fuel cell 204 and the electrical bus 216.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1="20040219397".PGNR.&OS=DN/20040219397&RS=DN/20040219397 (3507 words)

	Aircraft Electrical Fire and the case for Virgin Electrical Bus
		The "Virgin Electrical Bus" proposal is essentially the installation in aircraft of a completely separate emergency electrical wiring system which would only be used in the event of an in-flight electrical fire to power essential aircraft systems normally available under Standby Electrical power to get the aircraft back on the ground in one piece.
		If a person had an electrical fire in their house, the first thing that person would do is remove the electrical power to the house by pulling the main house fuse, but that option is not available with aircraft like the B777 and Airbus.
		Electrical currents flowing through a structure comprising sheets of metal, such as an aircraft airframe, causes electrolysis which rapidly degrades protective coatings, accelerating corrosion at the joins and leading to the possibility of premature catastrophic structural failure as the aircraft ages.
	www.vision.net.au /~apaterson/aviation/wire_virgin.htm (3742 words)

	PARK BUS DUCT Electrical Distribution Systems
		The bus duct conductor is available in either tin-plated, full round edge, type #110, flat copper bars or electrical conductor grade aluminum alloy #6101-Tel tin-plated per the "Alstan" process.
		Standard bus bracing is 75 kA at 600v, 60 kA at 5 kV and 60 kA at 15kV.
		The indoor bus is enclosed in a ventilated housing.
	www.ea-online.com /park/pg5b.htm (826 words)

	Busway ground bus joint - Patent 4195198
		The electrical joint defined in claim 1, wherein the first portions of said first and second foils are respectfully riveted to the terminations of said first and second ground busbars.
		Upon joining two busway sections end-to-end, the foils electrically connected to the adjacent ends of the ground bus in the two busway sections are sandwiched between the lapped flanges of the two section housings.
		The ground bus joint of the present invention is utilized to electrically interconnect ground busbars 10 and 12 incorporated in two busway sections, generally indicated at 14 and 16, which are physically and electrically joined end-to-end as seen in FIG.
	www.freepatentsonline.com /4195198.html (1690 words)

	World Intellectual Property Organization (Site not responding. Last check: 2007-10-21)
		The traction motors typically receive electrical energy from an energy bus of the vehicle, in response to which the motors apply a torque to the drive wheels, thereby causing the vehicle to accelerate.
		Thus, in a series hybrid electric vehicle, there are typically two energy sources capable of supplying surplus electrical energy to charge the energy storage system: the auxiliary power unit, and the traction motors acting as a regenerative braking system.
		Conversely, when there is a surplus of electrical energy on the energy bus 42, which may result from excess energy supplied by the auxiliary power unit 64 and/or from regenerative braking energy supplied by the regenerative braking system 46, the energy storage system 62 receives and stores such surplus energy for future use.
	www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=03/72389.030904&ELEMENT_SET=DECL (8949 words)

	9082. Peeling silverplating in Electrical bus
		We have received some electrical bus components for magnets in which the silverplating is peeling.
		Both the silver layer and the nichel layer are peeling leaving the copper exposed.
		I believe your best bet is to have the bus components replated, the silver was put on for a purpose and by removing it from the surface or by trying to sandwich it in will defeat the purpose.
	www.finishing.com /90/82.shtml (170 words)

	Electrical bus -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-21)
		Buses are used for connecting components of a (A machine for performing calculations automatically) computer: a common example is the (Click link for more info and facts about PCI) PCI bus in (A small digital computer based on a microprocessor and designed to be used by one person at a time) PCs.
		Buses are used for communicating between computers (often (Integrated circuit semiconductor chip that performs the bulk of the processing and controls the parts of a system) microprocessors).
		These may or may not correspond with heavy electrical conductors at a (A subsidiary station where electricity is transformed for distribution by a low-voltage network) substation.
	www.absoluteastronomy.com /encyclopedia/e/el/electrical_bus.htm (299 words)

	Motor Control Center Meltdown
		While examining the joints connecting the horizontal feeder bus bars to the to vertical branch section bus bars, we noticed the lock-down nuts were backed off to where they engaged only a very few threads of the bolts.
		Electrical load operation tends to be periodic: There are times of low electric energy requirements and periods of high electric energy demand (and higher current density draw).
		This periodic bus bar heating and cooling can loosen connections at bus and cable lug joints, reducing current transfer from lug to bus and bus to bus.
	ecmweb.com /mag/electric_motor_control_center/index.html (805 words)

	IEbus Description, Electrical Interface Bus
		The bus is idle high, taken low for the Synchronization period, then the bus enters the data period.
		During the data period the bus is either taken high or low depending on the data bit sent.
		After the data period the bus returns to the preparation period, and is idle high.
	www.interfacebus.com /Design_Connector_IEbus.html (348 words)

	SR 111 Investigation Report-1.6.10 Electrical System
		Electrical power distribution is normally automatic; however, if necessary, the pilots can control the electrical system manually with controls located on the overhead switch panel.
		These bus feed wires were routed through five conduits that were installed along the right side of the fuselage, from the avionics compartment to approximately halfway up the fuselage side wall.
		All of the bus feed wires supplying the avionics CB panel are routed from the right aft side of the cockpit wall, forward through a hole behind Galley 2, and then inboard to the avionics CB bus bars.
	www.bst.gc.ca /en/reports/air/1998/a98h0003/01report/01factual/rep1_06_10.asp?print_view=1 (2830 words)

	Data processing system having distributed priority network with logic for deactivating information transfer requests - ...
		Upon completion of the bus cycle, the priority logic is coupled to deactivate the indication of the grant of the bus cycle, and in response thereto, to deactivate the request of the particular unit which has just had access to the bus.
		When the bus cycle is granted, the unit places its interrupt vector on the bus, the interrupt vector including the channel number of the central processor and the interrupt level number.
		Thus, with the bus in the idle state, the first event that occurs as the bus goes to the busy state is that the user sets its user request flip-flop 15.
	www.freepatentsonline.com /4096569.html (7940 words)

	AETCO Short Circuit & Coordination Study
		Many times the source side of the interrupting device is an electrical bus in a piece of switchgear.
		Ideally in any electrical distribution system, when a fault occurs it is desirable to interrupt and remove only that portion of the electrical system in trouble, leaving the remaining system intact.
		In addition to the Short Circuit and Coordination Studies, a Load Study should be made on an electrical distribution system to determine the adequacy of the system, as well as the proper sizing and setting of electrical protective devices.
	www.99aetco.com /shortcircuit.html (698 words)

	Aircraft Electrical Fires by Alex Paterson
		In the author's opinion, the Boeing Electrical Fire drill is a 'Claytons' emergency drill - the drill you have when you don't have a proper strategy to deal with the situation.
		If a person had an electrical fire in their house, the first thing that person would do is remove the electrical power to the house by pulling the fuses, but this option is not available with aircraft like the B777 and Airbus.
		There are significant design constraints facing the concept of AFCI circuit breakers for aircraft, not in the least being the likelihood of high frequency attenuation associated with the long lengths of wire in aircraft.
	www.vision.net.au /~apaterson/aviation/electrical_fire.htm (1771 words)

	Bus (Site not responding. Last check: 2007-10-21)
		Originally employed as a part of the London public transport system, in a distinctive red livery, they are extensively used throughout the United Kingdom and in a few other cities elsewhere, for example Hong Kong, Singapore and Berlin.
		image London's Routemaster is a specific model of the double-decker bus, which has been in service since the early 1960s, and has become something of an icon for London.
		Ultra low floor buses were developed towards the end of the 20th century and can increasingly be found all over the world.
	www.yotor.com /wiki/en/bu/Bus.htm (1689 words)

	Melbourne Electrical Specialists - C-bus (Site not responding. Last check: 2007-10-21)
		It offers homeowners the ability to integrate electrical appliances and services such as lighting, air-conditioning and irrigation onto one platform and then activate or reprogramme them within the home via a wall-mounted control panel or home phone.
		C-bus will control virtually any type of electrical load with ease, whether it’s the simple digital control of a lighting circuit, or variable analogue type controls such as the dimming of electronic fluorescent ballast.
		Melbourne Electrical Specialists (formerly Banyule Electrics) is a division of JVS Electrics P/L, REC 7353
	www.melbelect.com.au /domestic/hints/cbus.htm (908 words)

	Copper.org: Electrical - Bus Bar / CDA Bus Bar Economic Analysis Program
		Busbar systems for industrial and commercial facilities are often designed to minimize first costs, with the busbar sized to the minimum permitted by safety considerations.
		Users can also enter values for a number of other variables, such as electricity and materials costs, the inflation rates to be applied to these costs, the pattern of usage the system is expected to experience, the expected life of the busbar system, etc.
		Once the user has entered the relevant variables the program calculates the dollar value of the system's heat losses, a number of other costs including first costs, and the resultant life-cycle cost based on the parameters entered.
	www.copper.org /applications/busbar/Basbar_program.html (482 words)

	AT Special Reports - Flight Operations Bulletin No. MD-11-99-04
		It cannot be used to prevent all of the possible hazards that may occur as a result of electrical short-circuiting.
		The decision to perform the Smoke/Fumes of Electrical, Air Conditioning, or Unknown Origin procedure must be made by a pilot (usually the captain) based on the circumstances of an event.
		Consider using the Cabin Bus Off switch immediately if there is a reason to suspect a specific cabin component, such as a galley, lavatory, lighting, or the passenger service units.
	www.aviationtoday.com /reports/smoke.htm (1446 words)

	Zoo Bus Construction - Electrical (Site not responding. Last check: 2007-10-21)
		All electrical fixtures are standard household items with the exception of the lights in the main area.
		This is an excellent place to run the wires from the sound booth at the front of the bus, to the puppet stage area and electrical panel at the rear.
		Exterior lights were placed above the windows on the outside of the bus to provide lighting for those standing outside the bus in the evenings.
	www.street.ns.ca /zoobusp4.html (369 words)

	EIA-422/EIA-485 Bus Interface Description
		A maximum of 256 device could exist on the bus when each is at 1/8 the UL [96k ohms].
		Pull-up/Pull-down resistors (Idle-line failsafe) at one end of the 485 bus may be used to bring the line voltage to a steady state (200mV) value at the end of a transmission; when all drivers are in the passive state.
		The resistor values are dictated by four factors: The input impedance of the receivers (between 5K and 90K ~ check the data sheet), The number of loads, the termination resistance 60 ohms (120 ohms per side), and the required (turn-on) current of the receivers.
	www.interfacebus.com /Design_Connector_RS422.html (1224 words)

	CertiGuide to A+ (A+ 4 Real) - What is a Bus?
		In this case, we are not talking about the Greyhound or School variety of bus but rather an electrical bus.
		Essentially, an electrical bus is any network of conducting pathways that allow electrical impulses to travel along from source to destination.
		As far as a computer is concerned, a bus is a set of pathways allowing data to travel as electrical impulses (recall that the language of computers is binary or base two counting and either the absence or presence of current represent zeros and ones).
	certiguide.com /apfr/cg_apfr_WhatisaBus.htm (449 words)

	Electrical
		The electrical system and all other simulated systems are running in real time, simultaneously.
		Should a certain electrical bus be unpowered (due to automatic isolation or manual disconnection), the associated devices become inoperative -- and/or another back-up system is automatically activated.
		Also included in the manual is a comprehensive Bus Equipment List (as to which device is connected to which bus).
	aerowinx.com /html/electrical.html (416 words)

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