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RCA Jack
The RCA connector is a type of electrical connector commonly used to carry analog audio and video signals. The name refers to the popular name of Radio Corporation of America, which introduced the design in the 1930s. Typically, the output is a plug type connector and the input a jack type connector. These are referred to as RCA plug and RCA jack respectively. It is also called a phono connector, referring to its early use to connect a phonograph turntable to a radio receiver. As home audio systems became more complex, RCA cables became a standard way to connect components such as radio receivers, amplifiers, turntables, tape decks, and CD players. Their ubiquity led to them also being used for video: connecting analog televisions, videocassette recorders, DVD players, and game consoles. They remain in use as a simple, widely supported means of connection. In some European countries such as France and Germany, the name ''cinch'' is still used as an antonomasia of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RF Coaxial Connector
An RF connector (radio frequency connector) is an electrical connector designed to work at radio frequency, radio frequencies in the multi-megahertz range. RF connectors are typically used with coaxial cables and are designed to maintain the shielding that the coaxial design offers. Better models also minimize the change in transmission line Characteristic impedance, impedance at the connection in order to reduce signal reflection and power loss. As the frequency increases, transmission line effects become more important, with small impedance variations from connectors causing the signal to reflect rather than pass through. An RF connector must not allow external signals into the circuit through electromagnetic interference and capacitive pickup. Mechanically, RF connectors may provide a fastening mechanism (Screw thread, thread, Bayonet mount, bayonet, braces, blind mate connector, blind mate) and Spring (device), springs for a low ohmic electric contact while sparing the gol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DVD Player
A DVD player is a machine that plays DVDs produced under both the DVD-Video and DVD-Audio technical standards, two different and incompatible standards. Some DVD players will also play audio CDs. DVD players are connected to a television to watch the DVD content, which could be a movie, a recorded TV show, or other content. History The first DVD player is claimed to have been created by the Japanese electronics vendor Toshiba in November 1996, and the first to be released to US customers is claimed to have been by Sony in April 1997. Some manufacturers originally announced that DVD players would be available as early as the middle of 1996. These predictions were too optimistic. Delivery was initially held up for "political" reasons of copy protection demanded by movie studios, but was later delayed by lack of movie titles. The first players appeared in Japan on November 1, 1996, followed by the United States on March 31, 1997, with distribution limited to only seven major ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phone Connector (audio)
A phone connector is a family of Cylinder, cylindrically-shaped electrical connectors primarily for Analog signal, analog audio signals. Invented in the late 19th century for Telephone switchboard, tele''phone'' switchboards, the phone connector remains in use for interfacing wired audio equipment, such as Headphone, head''phones'', Loudspeaker, speakers, Microphone, micro''phones'', mixing consoles, and electronic musical instruments (e.g. electric guitars, Electronic keyboard, keyboards, and effects units). A Gender of connectors and fasteners, ''male'' connector (a plug), is mated into a ''female'' connector (a socket), though #Other terms, other terminology is used. Plugs have 2 to 5 electrical contacts. The tip contact is indented with a groove. The sleeve contact is nearest the (conductive or Insulator (electricity), insulated) handle. Contacts are insulated from each other by a band of non-conductive material. Between the tip and sleeve are 0 to 3 ring contacts. Since ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Television
Television (TV) is a telecommunication medium for transmitting moving images and sound. Additionally, the term can refer to a physical television set rather than the medium of transmission. Television is a mass medium for advertising, entertainment, news, and sports. The medium is capable of more than "radio broadcasting", which refers to an audio signal sent to radio receivers. Television became available in crude experimental forms in the 1920s, but only after several years of further development was the new technology marketed to consumers. After World War II, an improved form of black-and-white television broadcasting became popular in the United Kingdom and the United States, and television sets became commonplace in homes, businesses, and institutions. During the 1950s, television was the primary medium for influencing public opinion.Diggs-Brown, Barbara (2011''Strategic Public Relations: Audience Focused Practice''p. 48 In the mid-1960s, color broadcasting was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gramophone Record
A phonograph record (also known as a gramophone record, especially in British English) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the outside edge and ends near the center of the disc. The stored sound information is made audible by playing the record on a phonograph (or "gramophone", "turntable", or "record player"). Records have been produced in different formats with playing times ranging from a few minutes to around 30 minutes per side. For about half a century, the discs were commonly made from shellac and these records typically ran at a rotational speed of 78 rpm, giving it the nickname "78s" ("seventy-eights"). After the 1940s, "vinyl" records made from polyvinyl chloride (PVC) became standard replacing the old 78s and remain so to this day; they have since been produced in various sizes and speeds, most commonly 7-inch discs pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phonograph
A phonograph, later called a gramophone, and since the 1940s a record player, or more recently a turntable, is a device for the mechanical and analogue reproduction of sound. The sound vibration Waveform, waveforms are recorded as corresponding physical deviations of a helical or spiral groove engraved, etched, incised, or impressed into the surface of a rotating cylinder or disc, called a ''Phonograph record, record''. To recreate the sound, the surface is similarly rotated while a playback #Stylus, stylus traces the groove and is therefore vibrated by it, faintly reproducing the recorded sound. In early acoustic phonographs, the stylus vibrated a Diaphragm (acoustics), diaphragm that produced sound waves coupled to the open air through a flaring Horn loudspeaker, horn, or directly to the listener's ears through stethoscope-type earphones. The phonograph was invented in 1877 by Thomas Edison; its use would rise the following year. Alexander Graham Bell's Volta Laboratory an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victrola
The Victor Talking Machine Company was an American recording company and phonograph manufacturer, incorporated in 1901. Victor was an independent enterprise until 1929 when it was purchased by the Radio Corporation of America (RCA) and became the RCA Victor Division of the Radio Corporation of America until late 1968, when it was renamed RCA Records. Established in Camden, New Jersey, Victor was the largest and most prestigious firm of its kind in the world, best known for its use of the iconic "His Master's Voice" trademark, the design, production and marketing of the popular "Victrola" line of phonographs and the company's extensive catalog of operatic and classical music recordings by world famous artists on the prestigious Red Seal label. After Victor merged with RCA in 1929, the company maintained its eminence as America's foremost producer of records and phonographs until the 1960s. History In 1896, Emile Berliner, the inventor of the gramophone and disc record, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Troubleshooting
Troubleshooting is a form of problem solving, often applied to repair failed products or processes on a machine or a system. It is a logical, systematic search for the source of a problem in order to solve it, and make the product or process operational again. Troubleshooting is needed to identify the symptoms. Determining the most likely cause is a process of elimination—eliminating potential causes of a problem. Finally, troubleshooting requires confirmation that the solution restores the product or process to its working state. A strategy is an organized set of activities expressing a plausible way of achieving a goal. Strategies should not be viewed as algorithms, inflexibly followed to solutions. Problem solvers behave opportunistically, adjusting activities within a strategy and changing strategies and tactics in response to information and ideas. Diagnostics In general, troubleshooting is the identification or diagnosis of "trouble" in the management flow of a sys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AM Radio
AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave (also known as "AM band") transmissions, but also on the longwave and shortwave radio bands. The earliest experimental AM transmissions began in the early 1900s. However, widespread AM broadcasting was not established until the 1920s, following the development of vacuum tube receivers and transmitters. AM radio remained the dominant method of broadcasting for the next 30 years, a period called the "Golden Age of Radio", until television broadcasting became widespread in the 1950s and received much of the programming previously carried by radio. Later, AM radio's audiences declined greatly due to competition from FM (FM broadcasting, frequency modulation) radio, Digital audio broadcasting, Digital Audio Broadcasting (DAB), satellite radio, HD Radio, HD (digital) radio, In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teufel Audio
Teufel Audio (referred to as Teufel, ) is a German manufacturer of audio products such as loudspeakers, headphones, hi-fi and Home cinema, home cinema systems. History Teufel was founded in Berlin in 1979 by Peter Tschimmel. In the initial phase, the company produced and sold loudspeaker kits consisting of ready-made Audio crossover, crossovers, drivers and cabinet components. The first products were loudspeaker sets. In 1990, Teufel changed its distribution model, from specialist and retail outlets to direct sales via catalogue. In 2006 private equity firm Riverside acquired Teufel from founder Peter Tschimmel. A year later, in 2010, private equity firm HgCapital acquired the company from Riverside. At the same time, Teufel integrated the Berlin-based start-up Raumfeld, which had been developing and selling multi-room streaming speakers since 2008. In summer 2018, French private equity company Naxicap took over the company. Since March 2020, Sascha Mallah has led the company as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antonomasia
In rhetoric, antonomasia is a kind of metonymy in which an epithet or phrase takes the place of a proper name, such as "the little corporal" for Napoleon I, or conversely the use of a proper name as an archetypal name, to express a generic idea. A frequent instance of antonomasia in the Late Middle Ages and early Renaissance was the use of the term "the Philosopher" to refer to Aristotle. Stylistically, such epithets may be used for elegant variation to reduce repetition of names in phrases. The word comes from the Greek , ''antonomasia'', itself from the verb , ''antonomazein'' 'to name differently'. Antonomasia can also refer to the transformation of a proper name into a common name, carrying certain defining traits. For example, designing someone as an apollo instead of saying he's an handsome young man. Archetypal names The opposite of antonomasia is an archetypal name. One common example in French is the word for fox: the Latin-derived was replaced by , from Renart, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
