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Audion - Wikipedia
https://en.wikipedia.org/wiki/Audion
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 …
Audion Tube : Innowiki
https://www.innowiki.org/audion-tube/
In 1906, Lee de Forest invented the “three-electrode Audion” vacuum tube. The Audion acts as an amplifier, transforming quiet electric signals into loud ones. Originally de Forest wasn’t quite sure if the Audion had any practical application. That quickly changed. Audions efficiency boost voice over telephones, enabling long-distance calls.
Audion Vacuum Tube - History Computer
https://history-computer.com/the-audion-vacuum-tube/
Audion Vacuum Tube: Historical Significance. Lee De Forest designed the Audion, and it was a vacuum tube device that could magnify a small electrical signal into a bigger one. The Audion was used in everything from radios to televisions to the earliest computers, and it enabled AT&T to establish up coast-to-coast phone service.
Audion Tube · Physical, Electrical, Digital
https://www.kimon.hosting.nyu.edu/physical-electrical-digital/items/show/1331
The “Audion” tube was a variation on a detector called a Fleming valve, but de Forest’s patent was considered unique because of a zigzagging wire he called a “grid.”. Though the device produced groundbreaking results for sending signals not just point-to-point but to broadcast, de Forest did not actually know how the vacuum tube worked.
The Audion | Ham Radio History - W2PA.net
http://w2pa.net/HRH/the-audion/
One of the first tubes to appear in QST was the Audion, by DeForest. Although it had been introduced back in 1905, it was expensive and amateurs did not begin to use it until seven years later, when 22-year-old Edwin Armstrong demonstrated its practical use as …
Lee DE Forest.org
https://www.leedeforest.org/The_Audion.html
Lee de Forest invented the three-element vacuum tube which became the basis of all electronic devices. He called it the Audion. In the Nineteenth Century Thomas Edison noticed a blackening on the inside of his burning light bulb. He believed it to be caused by electrons and he named it the “Edison Effect.”
History of Audion Tube Amplifiers at True Audiophile
https://trueaudiophile.com/pages/Audion-History.html
A little History of Audion Tube Audio: In 1986 David Chessel was technical director for Audio Innovations during a time when the company had an enviable reputation for sound quality. It was at this time and the few preceding years that a friendship flourished between David, and Audio Innovation’s initiator and one of Europe’s top audio ...
How the Audion Was Invented, January 1947 Radio-Craft - RF ...
http://www.rfcafe.com/references/radio-craft/how-audion-invented-january-1947-radio-craft.htm
How the Audion Was Invented By Lee de Forest In the summer of 1900, I was working under the light of a Welsbach gas burner in my hall bedroom in Chicago, experimenting with my so-called "Sponder," an anti-coherer for the reception of electrical waves for use in wireless telegraphy.
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