Dating fender champ silverface Sex live chatskype
Vacuum tubes, or thermionic valves, are arrangements of electrodes in a vacuum within an insulating, temperature-resistant envelope.
A third element called a "control grid" can be added to the design which provides the ability to amplify a signal.
The simplest vacuum tubes resemble incandescent light bulbs in that they have a filament sealed in a glass envelope which has been evacuated of all air.
When hot, the filament releases electrons into the vacuum: a process called thermionic emission.
However, tubes are still used in several specialized applications such as guitar amplifiers (also called a valve amp outside the U.
S.) and high power RF transmitters, as a display device in television sets and in microwave ovens.
Tube amps are particularly popular with serious musicians.