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Tondi Elektroonika
Tondi Elektroonika, formerly known as ('Tallinn Semiconductor Resistor Factory'), ('Tallinn Radiotechnical Factory named after Hans Pöögelmann') and ('Hans Pöögelmann Electrotechnical Factory'), as well as Factory A-1381, was a factory for electrotechnical components located in Tallinn, Estonia. It was a significant component of the Soviet military-industrial complex. When the centralization of the USSR economy resumed in 1966, the national councils were abolished and the factory was subordinated to Moscow and renamed Factory A-1381. As the public name of the numeric factory was not allowed to contain location, the factory was named after September 1, 1966, the name of the Hans Pöögelmann electrical engineering factory (the electrical engineering factory (abbreviation ETT)). Under this name, the company operated all its glory to the formation of Tondi electronics in 1991. During this time, the P-N-P-type bipolar transistors and thyristors, the P-channel output transistor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tondi Elektroonika Logo
Tondi may refer to: * Tondi, Tallinn, district of Kristiine, Tallinn, Estonia * Ibrahim Tondi (born 1985), Nigerien hurdler * Tondi Elektroonika, factory for electrotechnical components located in Tallinn, Estonia See also * Tondo (other) * Tyndis Tyndis ( grc, Τύνδις) was an ancient Indian seaport/harbor-town mentioned in the Graeco-Roman writings. According to the ''Periplus of the Erythraean Sea,'' Tyndis was located north of port Muziris in the country of the Cerobothra (presen ..., Greek name of Tondi, an ancient Indian port on the Malabar Coast during the Chera kingdom * Thondi or Tondi, town in Tamil Nadu, India, ancient port during the Pandyan kingdom {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guidance System
A guidance system is a virtual or physical device, or a group of devices implementing a controlling the movement of a ship, aircraft, missile, rocket, satellite, or any other moving object. Guidance is the process of calculating the changes in position, velocity, altitude, and/or rotation rates of a moving object required to follow a certain trajectory and/or altitude profile based on information about the object's state of motion. A guidance system is usually part of a Guidance, navigation and control system, whereas navigation refers to the systems necessary to calculate the current position and orientation based on sensor data like those from compasses, GPS receivers, Loran-C, star trackers, inertial measurement units, altimeters, etc. The output of the navigation system, the navigation solution, is an input for the guidance system, among others like the environmental conditions (wind, water, temperature, etc.) and the vehicle's characteristics (i.e. mass, control system avail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1950s Establishments In Estonia
Year 195 ( CXCV) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Scrapula and Clemens (or, less frequently, year 948 ''Ab urbe condita''). The denomination 195 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Emperor Septimius Severus has the Roman Senate deify the previous emperor Commodus, in an attempt to gain favor with the family of Marcus Aurelius. * King Vologases V and other eastern princes support the claims of Pescennius Niger. The Roman province of Mesopotamia rises in revolt with Parthian support. Severus marches to Mesopotamia to battle the Parthians. * The Roman province of Syria is divided and the role of Antioch is diminished. The Romans annexed the Syrian cities of Edessa and Nisibis. Severus re-establish his hea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Tallinn
''This is the overview article of the history of Tallinn, Estonia. For the timeline, see Timeline of Tallinn'' The first archaeological traces of a small hunter-fisherman community's presence in what is now Tallinn's city centre are about 5,000 years old. The comb ceramic pottery found on the site dates to about 3000 BCE and corded ware pottery around 2500 BCE. Around 1050, the first fortress was built on Tallinn - Toompea. As an important port for trade between Novgorod and Scandinavia, it became a target for the expansion of the Teutonic Knights and the Kingdom of Denmark during the period of Northern Crusades in the beginning of the 13th century when Christianity was forcibly imposed on the local population. Danish rule of Tallinn and northern Estonia started in 1219. In 1285, Tallinn, then known more widely as Reval, became the northernmost member of the Hanseatic League – a mercantile and military alliance of German-dominated cities in Northern Europe. The king o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Economy Of Tallinn
An economy is an area of the production, distribution and trade, as well as consumption of goods and services. In general, it is defined as a social domain that emphasize the practices, discourses, and material expressions associated with the production, use, and management of scarce resources'. A given economy is a set of processes that involves its culture, values, education, technological evolution, history, social organization, political structure, legal systems, and natural resources as main factors. These factors give context, content, and set the conditions and parameters in which an economy functions. In other words, the economic domain is a social domain of interrelated human practices and transactions that does not stand alone. Economic agents can be individuals, businesses, organizations, or governments. Economic transactions occur when two groups or parties agree to the value or price of the transacted good or service, commonly expressed in a certain currency. How ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hearing Aid Manufacturers
Hearing, or auditory perception, is the ability to perceive sounds through an organ, such as an ear, by detecting vibrations as periodic changes in the pressure of a surrounding medium. The academic field concerned with hearing is auditory science. Sound may be heard through solid, liquid, or gaseous matter. It is one of the traditional five senses. Partial or total inability to hear is called hearing loss. In humans and other vertebrates, hearing is performed primarily by the auditory system: mechanical waves, known as vibrations, are detected by the ear and transduced into nerve impulses that are perceived by the brain (primarily in the temporal lobe). Like touch, audition requires sensitivity to the movement of molecules in the world outside the organism. Both hearing and touch are types of mechanosensation. Hearing mechanism There are three main components of the human auditory system: the outer ear, the middle ear, and the inner ear. Outer ear The outer ear inclu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineering Companies Of Estonia
Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied mathematics, applied science, and types of application. See glossary of engineering. The term ''engineering'' is derived from the Latin ''ingenium'', meaning "cleverness" and ''ingeniare'', meaning "to contrive, devise". Definition The American Engineers' Council for Professional Development (ECPD, the predecessor of ABET) has defined "engineering" as: The creative application of scientific principles to design or develop structures, machines, apparatus, or manufacturing processes, or works utilizing them singly or in combination; or to construct or operate the same with full cognizance of their design; or to forecast their behavior under specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defence Companies Of The Soviet Union
Defense or defence may refer to: Tactical, martial, and political acts or groups * Defense (military), forces primarily intended for warfare * Civil defense, the organizing of civilians to deal with emergencies or enemy attacks * Defense industry, industry which manufactures and sells weapons and military technology * Self-defense, the use of force to defend oneself * Haganah (Hebrew for "The Defence"), a paramilitary organization in British Palestine * National security, security of a nation state, its citizens, economy, and institutions, as a duty of government ** Defence diplomacy, pursuit of foreign policy objectives through the peaceful employment of defence resources ** Ministry of defence or department of defense, a part of government which regulates the armed forces ** Defence minister, a cabinet position in charge of a ministry of defense * International security, measures taken by states and international organizations to ensure mutual survival and safety Sports ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helitron
Helitron is a mixed choir operating in Tallinn and originally set up to cater to employees of Tondi Elektroonika. Of the employment-related choirs established during Soviet occupation of Estonia, Helitron was one of the most famous ones, and is one of the few ones who have outlived the USSR. A number of people who participated in the Singing Revolution in musical rôles have at some point in their life been involved with Helitron, as either a singer in it, or as a conductor or arranger. Repertory The choir has been singing baroque and religious music and is also known for its chamber music performances. Before the dissolution of Soviet Union, it also performed Soviet music. On 1 May 1975, Helitron was the first choir to perform Mõistatused (Estonian for ''Puzzles''), an orchestral piece based on Estonian folk songs by Ester Mägi. This performance was conducted by . Conductors In 1964, Harald-Peter Siiak became the chief conductor of Helitron. In 1998–2004, the chief ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hearing Aid
A hearing aid is a device designed to improve hearing by making sound audible to a person with hearing loss. Hearing aids are classified as medical devices in most countries, and regulated by the respective regulations. Small audio amplifiers such as personal sound amplification products (PSAPs) or other plain sound reinforcing systems cannot be sold as "hearing aids". Early devices, such as ear trumpets or ear horns, were passive Amplifier, amplification cones designed to gather sound energy and direct it into the ear canal. Modern devices are computerised electroacoustic systems that transform environmental sound to make it audible, according to audiometry, audiometrical and cognitive rules. Modern devices also utilize sophisticated digital signal processing to try and improve speech intelligibility and comfort for the user. Such Digital signal processing, signal processing includes feedback management, wide dynamic range compression, directionality, frequency lowering, and noi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Set
An antique radio is a radio receiving set that is collectible because of its age and rarity. Types of antique radio Morse receivers The first radio receivers used a coherer and sounding board, and were only able to receive CW continuous wave (CW) transmissions, encoded with Morse code (wireless telegraphy). Later wireless telephony, transmission and reception of speech became possible, although Morse code transmission continued in use until the 1990s. All the following sections concern speech-capable radio, or wireless telephony. Early home-made sets The idea of radio as entertainment took off in 1920, with the opening of the first stations established specifically for broadcast to the public such as KDKA in Pittsburgh and WWJ in Detroit. More stations opened in cities across North America in the following years and radio ownership steadily gained in popularity. Radio sets from before 1920 are rarities, and are probably military artifacts. Sets made prior to approximatel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Souvenir
A souvenir (), memento, keepsake, or token of remembrance is an object a person acquires for the memories the owner associates with it. A souvenir can be any object that can be collected or purchased and transported home by the traveler as a memento of a visit. The object itself may have intrinsic value, or be a symbol of experience. Without the owner's input, the symbolic meaning is lost and cannot be articulated. As objects The tourism industry designates tourism souvenirs as commemorative merchandise associated with a location, often including geographic information and usually produced in a manner that promotes souvenir collecting. Throughout the world, the souvenir trade is an important part of the tourism industry serving a dual role, first to help improve the local economy, and second to allow visitors to take with them a memento of their visit, ultimately to encourage an opportunity for a return visit, or to promote the locale to other tourists as a form of word-o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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