Audion Deforest

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

https://www.thehenryford.org/collections-and-research/digital-collections/artifact/256334

Lee DE Forest.org

https://www.leedeforest.org/The_Audion.html

Audion Vacuum Tube - History Computer

https://history-computer.com/the-audion-vacuum-tube/

Lee De Forest (1873–1961) was a brilliant American inventor who received over 180 patents. He is credited with inventing the Audion, the first vacuum triode, a vacuum tube that amplifies electrical signals that are pretty weak.

De Forest Audion Tube, circa 1908 - The Henry Ford

https://www.thehenryford.org/collections-and-research/digital-collections/artifact/170965/

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’s Audion consisted of a glass vacuum tube containing three electrodes inside: a cathode (filament), an anode (plate), and a control grid (zigzagging wire).

AUDION_DeForest , Tube AUDION_DeForest; Röhre …

https://www.radiomuseum.org/tubes/tube_audion_deforest.html

Description. Prototypes of the most early three-electrode Audion tubes for Lee de Forest. Edison candelabra base, round bulb. The predecessor was the two-electrode Audion of 1906. Text in other languages (may differ) Tube prices. 9 Tube prices (visible for members only) AUDION_DeForest: eigene Röhre.

The Audion | Ham Radio History - W2PA.net

http://w2pa.net/HRH/the-audion/

The Audion. Posted on 2212z - 11 January 2013. by W2PA June 2, 2021. Vacuum tubes revolutionized radio, changing it more than any other single invention. When first introduced, however, even the scientists and engineers working with them did not fully understand how they worked. One of the first tubes to appear in QST was the Audion, by DeForest.

Lee de Forest | American inventor | Britannica

https://www.britannica.com/biography/Lee-de-Forest