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de Forest Audion: Audion Tube - Electronics Notes

    https://www.electronics-notes.com/articles/history/vacuum-tube-thermionic-valve/de-forest-audion-triode.php
    Lee de Forest had developed his interest in wireless technology while he was studying at Yale University - his Ph.D. thesis was concerned with the reflection of radio frequency signals at the ends of what would be called transmission lines today. He also became interested in the detection wireless signals and like Fleming de For…

The Audion Triode Amplifier · Physical, Electrical, Digital

    https://www.kimon.hosting.nyu.edu/physical-electrical-digital/items/show/1008
    The Triode amplifier was invented in 1906 by Lee de Forest. It improved on earlier designs like the Fleming valve by adding a grid with a charge in addition to the two diodes. By 1912 the amplifying properties of the triode had been fully fleshed out and triodes and various iterations of them, became ubiquitous (All About Circuits: The Triode).

De Forest’s 20th-Century Triode or Audion Amplifier (1907)

    https://scalar.usc.edu/maker/record/media/deforestaudion
    De Forest’s 20th-Century Triode or Audion Amplifier (1907) 1 2013-12-14T06:38:41-08:00 Jentery Sayers becbfb529bffcfafdfad6920ed57b30ccdca5339 249 5 Lee De Forest, US Patent 841386 A, for Wireless Telegaphy and the Audion Amplifier (1907) plain 2013-12-26T19:55:37-08:00 Jentery Sayers becbfb529bffcfafdfad6920ed57b30ccdca5339

Lee de Forest Invents the Triode, the First Widely Used ...

    https://www.historyofinformation.com/detail.php?id=563
    The first triode, the De Forest Audion, invented in 1906 In 1906 American inventor Lee de Forest introduced a third electrode called the grid into the vacuum tube . The resulting triode could be used both as an amplifier and a switch. de …

Lee DE Forest.org

    https://www.leedeforest.org/The_Audion.html
    The Audion Lee de Forest, 1873-1961, was an inventor and scholar who made significant contributions to the science of electronic communications during the first three decades of the Twentieth Century. He held numerous patents on the technology of radio, television and film. Above, the original Fleming patent for the diode or 2-element vacuum tube.

Audion Vacuum Tube - History Computer

    https://history-computer.com/the-audion-vacuum-tube/
    De Forest’s involvement in wireless telegraphy led to the development of the Audion (also known as the De Forest valve, and since 1919, the triode). It was created in 1905, and De Forest filed a patent for a diode vacuum tube sensor in January 1906. The Audion was a bulb with the identical components as the Fleming diode, except for an additional electrode, …

DeForest Audion Tube, Type D-01A, circa 1924 - The …

    https://www.thehenryford.org/collections-and-research/digital-collections/artifact/256334
    In 1906, De Forest invented the Audion tube, allowing the detection and amplification of weak radio signals. As the first triode vacuum tube, the Audion revolutionized radio broadcasting--and made it more practical. By the late 1920s, vacuum tube radios were the widespread in people's homes. Artifact Vacuum tube Date Made circa 1924 Creators

AGD THE AUDION Monoblock · AGD Productions

    https://agdproduction.com/audion/
    Lee de Forest’s triode tube (Audion) from 1906. Top metal electrode is the plate. Grid is the bent metal wire partly visible. AGD “THE AUDION” 2021 The most advanced power stage in Hi-End Audio. Gallium Nitride MOSFET based power stage. Fully integrated in a Glass Tube (Octal Socket) 170W, 4ohm (>30A max current capability).

Langdon Notables: Lee DeForest

    https://langdonnotables.blogspot.com/2022/02/lee-deforest.html
    The Audion vacuum tube, a triode, was a major advance in vacuum tube technology, especially when compared to the simpler diode vacuum tubes then around. It was a major advance for radio transmission and was the first …

The ‘Audion Piano’ and Audio Oscillator. Lee De Forest ...

    https://120years.net/the-audion-pianolee-de-forestusa1915/
    Lee De Forest , The self styled “Father Of Radio” (the title of his 1950 autobiography) inventor and holder of over 300 patents, invented the triode electronic valve or ‘Audion valve’ in 1906- a much more sensitive development of John A. Fleming’s diode valve.

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