V T vacuum-tube - vertaling naar russisch
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V T vacuum-tube - vertaling naar russisch

DEVICE THAT CONTROLS ELECTRIC CURRENT BETWEEN ELECTRODES IN AN EVACUATED CONTAINER
Vaccuum tube; Vacuum tubes; Radio tube triode; Thermionic device; Vacuum Tubes; Integrated circuit vacuum tube; Integrated vacuum tube; Field emitter vacuum tube; Thermionic valves; Firefet; Thermionic tube; Vacuum Tube; Vacuum diode; Vacuum Diode; Vaccum tube; Radio valve; 12SK7; 5U4; Electronic tube; Electrical valve; Vacuum tube types; Vacuum tube (electronics); Microtriode; Radio tube; 12AU6; 6AU6; Vacuum-tube; Miniature valve; Microtube (electronics); Microtube (Electronics); Electron valve; Vacumn tube; Thoriated tungsten; Acorn Valve; Acorn valve; Cheater cord; Thermionic valve; Valve (electronics); Vacuum tube circuit; Firebottle; Electron device; Battery valve; Indirectly heated cathode; Vacuum-tube electronics

radio tube         

['reidiə(u)tju:b]

синоним

radio valve

radio valve         

['reidiə(u)vælv]

общая лексика

электронная лампа

vacuum-tube         
vacuum-tube noun radio электронная лампа

Definitie

УЛАФ V
(Olav V) (1903-1991), король Норвегии, родился 2 июля 1903 в Англии, сын принца Карла Датского и принцессы Мод Английской. После расторжения в 1905 унии между Швецией и Норвегией, Александра перевезли в Норвегию, где дали новое норвежское имя - Улаф. С ранних лет Улаф получал приличествующее наследнику трона образование. В 18-летнем возрасте стал посещать заседания кабинета министров и осуществлять функции монарха. Учился в университете Осло и Норвежской военной академии, затем в Бейллиол-колледже Оксфордского университета. В 1929 женился на принцессе Марте Шведской.
В годы Второй мировой войны, после оккупации Норвегии, Улаф находился в эмиграции в Англии. В июле 1944 он стал командующим вооруженными силами Норвегии. В мае 1945 после победы над нацистами Улаф первым из представителей королевской семьи вернулся в Норвегию. С июня 1955 до смерти отца 21 сентября 1957 был регентом. 20 января 1958 при открытии заседания парламента Улаф присягнул на верность Норвегии как король Улаф V. Умер Улаф 17 января 1991.

Wikipedia

Vacuum tube

A vacuum tube, electron tube, valve (British usage), or tube (North America), is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied.

The type known as a thermionic tube or thermionic valve utilizes thermionic emission of electrons from a hot cathode for fundamental electronic functions such as signal amplification and current rectification. Non-thermionic types such as a vacuum phototube, however, achieve electron emission through the photoelectric effect, and are used for such purposes as the detection of light intensities. In both types, the electrons are accelerated from the cathode to the anode by the electric field in the tube.

The simplest vacuum tube, the diode (i.e. Fleming valve), invented in 1904 by John Ambrose Fleming, contains only a heated electron-emitting cathode and an anode. Electrons can only flow in one direction through the device—from the cathode to the anode. Adding one or more control grids within the tube allows the current between the cathode and anode to be controlled by the voltage on the grids.

These devices became a key component of electronic circuits for the first half of the twentieth century. They were crucial to the development of radio, television, radar, sound recording and reproduction, long-distance telephone networks, and analog and early digital computers. Although some applications had used earlier technologies such as the spark gap transmitter for radio or mechanical computers for computing, it was the invention of the thermionic vacuum tube that made these technologies widespread and practical, and created the discipline of electronics.

In the 1940s, the invention of semiconductor devices made it possible to produce solid-state devices, which are smaller, more efficient, reliable, durable, safer, and more economical than thermionic tubes. Beginning in the mid-1960s, thermionic tubes were being replaced by the transistor. However, the cathode-ray tube (CRT) remained the basis for television monitors and oscilloscopes until the early 21st century.

Thermionic tubes are still used in some applications, such as the magnetron used in microwave ovens, certain high-frequency amplifiers, amplifiers for electric musical instruments such as guitars, as well as high end audio amplifiers, which many audio enthusiasts prefer for their "warmer" tube sound.

Not all electronic circuit valves / electron tubes are vacuum tubes. Gas-filled tubes are similar devices, but containing a gas, typically at low pressure, which exploit phenomena related to electric discharge in gases, usually without a heater.

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