Asked in Computers & Technology at 7:12 PM on November 07, 2009
Tags: vacuum, tube
Without air
Answered by rashmiranjan143 , an ibibo Advisor, at 7:26 PM on November 07, 2009
well, ,In electronics, a vacuum tube, electron tube inside North America, thermionic valve, or just valve elsewhere, especially in Britain, is a device used to amplify, switch, otherwise modify, or create an electrical signal by controlling the movement of electrons in a low-pressure space, often tubular in form. Many devices called vacuum tubes are filled with low-pressure gas: these are so
well Rocky,In electronics, a vacuum tube, electron tube inside North America, thermionic valve, or just valve elsewhere, especially in Britain, is a device used to amplify, switch, otherwise modify, or create an electrical signal by controlling the movement of electrons in a low-pressure space, often tubular in form. Many devices called vacuum tubes are filled with low-pressure gas: these are so
hi thereBy 1906, because of the work of Lee de Forest, inventors knew the two basic functions of a vacuum tube -- converting alternating current to direct current and amplifying an electronic signal. Over the decades, vacuum tubes were improved and were used in more and more complicated circuitry. At the 1939 Worlds Fair, for example, vacuum tubes were showcased in fully electronic television
A vacuum tube also called an electron tube or, in the UK, a valve is a device sometimes used to amplify electronic signals. In most applications, the vacuum tube is obsolete, having been replaced. At the highest power levels, some tube circuits have power supplies delivering several kilovolts.source :http://whatis.techtarget.com/def inition/0,,sid9gci213686,00.html...A vacuum tube is just that: a glass tube
from effects such as keystoning....CRT Cathode Ray Tubeis a vacuum tube used as a display screen in a computer monitor or TV. The viewing end of the tube is coated with phosphors, which emit light when. The cathode rays are now known to be a beam of electrons emitted from a heated cathode inside a vacuum tube and accelerated by a potential difference between this cathode and an anode. The screen is covered
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