Audion | Nico Bereciartúa | Playing For Change | Song Around The World
construction 3 tubes Audion 1923, stavba Audionu, all concert Meissner, Lee de Forest, Armstrong
Emenee Audion Polychord Organ Demo
The Audion was an electronic detecting or amplifying vacuum tube invented by American electrical engineer Lee de Forest in 1906. It was the first triode, consisting of an evacuated glass tube containing three electrodes: a heated filament, a grid, and a plate. It is important in the history of technology because it was the first widely used electronic device which could amplify; a small electrical signal applied to the grid could control a larger current flowing from the filament to plate.
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