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FS Class E.656
The Class E.656 is an Italian Articulated locomotive, articulated rheostatic-type electric locomotive built from 1975 to 1989. An evolution of the FS Class E.646, E.646, they are mixed traffic locomotives, and have been used on every kind of train, ranging from freight to intercity passenger transport. The E.656 is nicknamed "Caimano" (Caiman). Technical details The hull is divided in two parts, each one with its own twin axle bogie, plus a central bogie in the middle. Each bogie mounts four DC motors, each providing , for a total of 12. The initial project speed was , but later it was reduced to 150 due to stability problems; further, the heavy mass of the locomotive did not allow the use of rheostatic braking. Recently, many E.656s have been transferred to the Cargo Division of Trenitalia to haul freight trains. The gear ratio has been reduced from 28/61 to 23/66, and the speed limit to . The modified units form the Class E.655. Series The E.656 class is officially sub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reggiane
Officine Meccaniche Reggiane SpA (commonly referred to as ''Reggiane'') was an Italian industrial manufacturer and aviation company. Reggiane was founded during 1904 by its parent company Caproni, which was in turn owned by the aeronautical engineer Giovanni Battista Caproni. Throughout the company's existence, it was involved in numerous industrial activities, such as railways, agriculture, aeronautics, and processing machinery. During the first half of the Twentieth Century, Reggiane became well known for the design and production of aircraft. Through the development of the Reggiane Re.2000, Re.2000, an all-metal monoplane, Reggiane gained a reputation for producing relatively agile single-seat fighter aircraft. Following the outbreak of the World War II, Second World War, the majority of Reggiane's fighter production was taken over by the ''Regia Aeronautica'' (the Italian Air Force). However, the company continued to manufacture and deliver fighters for various other neutral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logic Gate
A logic gate is an idealized or physical device implementing a Boolean function, a logical operation performed on one or more binary inputs that produces a single binary output. Depending on the context, the term may refer to an ideal logic gate, one that has for instance zero rise time and unlimited fan-out, or it may refer to a non-ideal physical device (see Ideal and real op-amps for comparison). Logic gates are primarily implemented using diodes or transistors acting as electronic switches, but can also be constructed using vacuum tubes, electromagnetic relays (relay logic), fluidic logic, pneumatic logic, optics, molecules, or even mechanical elements. Now, most logic gates are made from MOSFETs (metal–oxide–semiconductor field-effect transistors). With amplification, logic gates can be cascaded in the same way that Boolean functions can be composed, allowing the construction of a physical model of all of Boolean logic, and therefore, all of the algorithms and mathem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roma Casilina
Roma or ROMA may refer to: Places Australia * Roma, Queensland, a town ** Roma Airport ** Roma Courthouse ** Electoral district of Roma, defunct ** Town of Roma, defunct town, now part of the Maranoa Regional Council *Roma Street, Brisbane, a street in Queensland **Roma Street busway station **Roma Street Parkland, park in Brisbane, Queensland **Roma Street railway station, a station in Brisbane, Queensland Brazil * Mata Roma, a municipality in the state of Maranhão * Roma Negra, a nickname of the city of Salvador, Bahia Italy * Rome or Roma, the capital of Italy **A.S. Roma, one of the football clubs of Rome ** Roma Tre University (founded in 1992) ** Esposizione Universale Roma or EUR, a residential and business district * Ancient Rome or Roma Lesotho * Roma, Lesotho, in the Maseru District Mexico * Colonia Roma, a neighbourhood in Mexico City Peru * Roma, Peru, a town in La Libertad Region Portugal * Roma (Lisbon Metro), a Green Line station on Avenida de Roma Romania ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bologna San Ruffillo
Bologna (, , ; egl, label= Emilian, Bulåggna ; lat, Bononia) is the capital and largest city of the Emilia-Romagna region in Northern Italy. It is the seventh most populous city in Italy with about 400,000 inhabitants and 150 different nationalities. Its metropolitan area is home to more than 1,000,000 people. It is known as the Fat City for its rich cuisine, and the Red City for its Spanish-style red tiled rooftops and, more recently, its leftist politics. It is also called the Learned City because it is home to the oldest university in the world. Originally Etruscan, the city has been an important urban center for centuries, first under the Etruscans (who called it ''Felsina''), then under the Celts as ''Bona'', later under the Romans (''Bonōnia''), then again in the Middle Ages, as a free municipality and later ''signoria'', when it was among the largest European cities by population. Famous for its towers, churches and lengthy porticoes, Bologna has a well-preserved hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Città Della Pieve
Città della Pieve is a ''comune'' (municipality) in the Province of Perugia in the Italian region Umbria, located in Valdichiana a few kilometres from the border between Umbria and Tuscany, and about southwest of Perugia and southeast of Chiusi in Tuscany. Etruscan tombs have been found in the neighbourhood, but it is not certain that the present town stands on an ancient site. It was the birthplace of the painters Pietro Vannucci (Perugino), possessing several of his works, and Niccolò Circignani. Città della Pieve borders the following municipalities: Allerona, Castiglione del Lago, Fabro, Monteleone d'Orvieto, Paciano, Piegaro in Umbria, and Cetona, Chiusi and San Casciano dei Bagni in Tuscany. History The origins of Città della Pieve are still unknown today. Before becoming a Christian city it certainly had another name (as Guiducci says in his "Historical briefing of Città della Pieve of 1686): Monte di Apollo, Castelforte di Chiuscio, Salepio or Castrum Salepia. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiusi
Chiusi (Etruscan: ''Clevsin''; Umbrian: ''Camars''; Ancient Greek: ''Klysion'', ''Κλύσιον''; Latin: ''Clusium'') is a town and ''comune'' in the province of Siena, Tuscany, Italy. History Clusium (''Clevsin'' in Etruscan) was one of the more powerful cities in the Etruscan League. Chiusi came under the influence of Rome in the 3rd century BC and was involved in the Social War. In 540 AD it was occupied by the Ostrogoths and was later seat of a Lombard duchy. From the 11th century it was under the rule of the local bishop, and was later contended for by Orvieto and, from 1231, Siena, belonging to the latter until 1556, when it was annexed to the Grand duchy of Tuscany. The region was devastated by malaria in the Middle Ages, and did not recover until the Valdichiana was drained in the 18th century. Main sights The lowlands around Chiusi house numerous trove of tombs for this civilization. The Etruscan Museum of Chiusi is one of the most important repositories of Et ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Curinga Train Disaster
The Curinga train disaster, also known as the Lamezia Terme train disaster, was a railway accident occurred on 21 November 1980 between Curinga and Eccellente stations, in the Catanzaro province, Italy. Initial body count was estimated in 10 dead and 80 injured, later updated to 20 and 122 respectively. The final count went up to 29 victims and 104 wounded. Ferrovie dello Stato train ''587'' was traveling southbound from Rome to Siracusa on the Salerno-Reggio Calabria railway. At 2.40 a.m., shortly after leaving Lamezia Terme station and heading to Paola, rammed into some loaded cars lost by freight train ''40679'', a 41-cars convoy from the same operator leaving Lamezia Terme for Reggio Calabria. The freight train had crossed Eccellente station without anyone noticing it lost 28 of its cars and was missing its tail lights, and later stopped at Vibo Pizzo station understanding something went wrong. The boxcars got detached from the convoy at kilometer ''266+200'', when a clamp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2009 Viareggio Train Accident Surrounding Damages 06
9 (nine) is the natural number following and preceding . Evolution of the Arabic digit In the beginning, various Indians wrote a digit 9 similar in shape to the modern closing question mark without the bottom dot. The Kshatrapa, Andhra and Gupta started curving the bottom vertical line coming up with a -look-alike. The Nagari continued the bottom stroke to make a circle and enclose the 3-look-alike, in much the same way that the sign @ encircles a lowercase ''a''. As time went on, the enclosing circle became bigger and its line continued beyond the circle downwards, as the 3-look-alike became smaller. Soon, all that was left of the 3-look-alike was a squiggle. The Arabs simply connected that squiggle to the downward stroke at the middle and subsequent European change was purely cosmetic. While the shape of the glyph for the digit 9 has an ascender in most modern typefaces, in typefaces with text figures the character usually has a descender, as, for example, in . The mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contactor
:''In semiconductor testing, contactors can also be referred to as the specialized socket that connects the device under test.'' :''In process industries, a contactor is a vessel where two streams interact, for example, air and liquid. See Gas-liquid contactor.'' A contactor is an electrically-controlled switch used for switching an electrical power circuit. A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch. Unlike general-purpose relays, contactors are designed to be directly connected to high-current load devices. Relays tend to be of lower capacity and are usually designed for both ''normally closed'' and ''normally open'' applications. Devices switching more than 15 amperes or in circuits rated more than a few kilowatts are usually called contactors. Apart from optional auxiliary low-current contacts, contactors are almost exclusively fitted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transducer
A transducer is a device that converts energy from one form to another. Usually a transducer converts a signal in one form of energy to a signal in another. Transducers are often employed at the boundaries of automation, measurement, and control systems, where electrical signals are converted to and from other physical quantities (energy, force, torque, light, motion, position, etc.). The process of converting one form of energy to another is known as transduction. Types * Mechanical transducers, so-called as they convert physical quantities into mechanical outputs or vice versa; * Electrical transducers however convert physical quantities into electrical outputs or signals. Examples of these are: ** a thermocouple that changes temperature differences into a small voltage; ** a linear variable differential transformer (LVDT), used to measure displacement (position) changes by means of electrical signals. Sensors, actuators and transceivers Transducers can be categorized by wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counter-electromotive Force
Counter-electromotive force (counter EMF, CEMF, back EMF),Graf, "counterelectromotive force", Dictionary of Electronics is the electromotive force (EMF) manifesting as a voltage that opposes the change in current which induced it. CEMF is the EMF caused by electromagnetic induction. Details For example, the voltage appearing across an inductor or coil is due to a change in current which causes a change in the magnetic field within the coil, and therefore the self-induced voltage. The polarity of the voltage at every moment opposes that of the change in applied voltage, to keep the current constant. The term ''back electromotive force'' is also commonly used to refer to the voltage that occurs in electric motors where there is relative motion between the armature and the magnetic field produced by the motor's field coils or permanent magnet field, thus also acting as a generator while running as a motor. This effect is not due to the motor's inductance, which generates a volta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
