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vacuum tube

In electronics, a vacuum tube, electron tube (in North America), or thermionic valve (elsewhere, especially in Britain), reduced to simply "tube" or "valve" in everyday parlance, is a device that relies on the flow of electric current through a vacuum. Vacuum tubes may be used for rectification, amplification, switching, or similar processing or creation of electrical signals. Vacuum tubes rely on thermionic emission of electrons from a hot filament or cathode, that then travel through a vacuum toward the anode (commonly called the plate), which is held at a positive voltage relative to the cathode. Additional electrodes interposed between the cathode and anode can alter the current, giving the tube the ability to amplify and switch. Vacuum Tube,Wikipedia (external link)



See Also

2.13 - Vacuum
Energy from Vacuum
12.30 - Thermal Radiation and Thermal Vacuum or Cold
15.11 - Dissociating Water with Vacuum
Crookes
Crookes Tube?
Etheric Elements
Figure 3.6 - Tornado Vacuums up Everything for Redistribution
Figure 7.11 - Russells Vacuum becoming Matter on Three Vectors
Longitudinal Waves in Vacuum
Vacuum
Vacuum Energy
Vacuum from Vibratory Induction

Page last modified on Wednesday 17 of April, 2013 09:16:51 MDT

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