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Audion - Wikipedia
https://en.wikipedia.org/wiki/Audion#:~:text=The%20Audion%20was%20an%20electronic%20detecting%20or%20amplifying,a%20heated%20filament%2C%20a%20grid%2C%20and%20a%20plate.
Audion Vacuum Tube - History Computer
https://history-computer.com/the-audion-vacuum-tube/
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 …
Lee De Forest: Father of Radio and Inventor of the Audion ...
https://blog.minicircuits.com/lee-de-forest-father-of-radio-and-inventor-of-the-audion/
De Forest invented the Audion in 1906, a device that changed the course of radio history in the 19 th century. The three-electrode vacuum tube functioned as a primitive transistor, allowing the amplification of radio signals to enable the broadcast of speech and music, a remarkable upgrade from Morse Code which was the dominant mode of wireless …
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.”
Audion Piano - Engineering and Technology History Wiki
https://ethw.org/Audion_Piano
De Forest. Lee De Forest, inventor of the triode electron tube, the Audion, also invented one of the first electronic musical instruments, the Audion piano. Invented in 1915, De Forest’s simple keyboard instrument used electron tubes in circuits called “oscillators,” which produced electromagnetic waves at a particular frequency.
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.
Audion | electronics | Britannica
https://www.britannica.com/technology/Audion
Audion, elementary form of radio tube developed in 1906 (patented 1907) by Lee De Forest of the United States. It was the first vacuum tube in which a control grid (in the form of a bent wire) was added between the anode plate and the cathode filament. The control grid enabled De Forest to modulate the current between the filament and the plate, producing the first successful …
Lee de Forest | American inventor | Britannica
https://www.britannica.com/biography/Lee-de-Forest
Lee de Forest, (born August 26, 1873, Council Bluffs, Iowa, U.S.—died June 30, 1961, Hollywood, California), American inventor of the Audion vacuum tube, which made possible live radio broadcasting and became the key component of all radio, telephone, radar, television, and computer systems before the invention of the transistor in 1947. Although de Forest was bitter …
Solved Why was the invention of the audion or triode tube ...
https://www.chegg.com/homework-help/questions-and-answers/invention-audion-triode-tube-vacuum-tube-important--improved-ability-radio-tune-wireless-f-q61296079
Why was the invention of the audion or triode tube (or vacuum tube) so important? a. it improved the ability of a radio to tune in to wireless frequencies b. it allowed for greater control over volume, improving the sound of voice and music c. it served as the basis for Edwin Armstrong's creation of regenerative circuits (or feedback
The Invention of Radio Technology - ThoughtCo
https://www.thoughtco.com/invention-of-radio-1992382
Lee de Forest was the inventor of space telegraphy, the triode amplifier, and the Audion, an amplifying vacuum tube. In the early 1900s, the development of radio was hampered by the lack of an efficient detector of electromagnetic radiation. It …
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