Lee de Forest

The Birth of the Transistor, Key Component of Modern Electronics

The Birth of the Transistor, Key Component of Modern Electronics

On December 22, 1947, John Bardeen, Walter Brattain and William Shockley at ATT‘s Bell Labs developed the first transistor, the key active component in practically all modern electronics. Vacuum Tubes as Predecessor of Transistors The transistor is a three terminal, solid state electronic device. In a three terminal device one can control electric current or voltage between two of the terminals by applying an electric current or voltage to the third terminal.…
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Enabling Radio Broadcast of Sound – Lee De Forest and the Audion

Enabling Radio Broadcast of Sound – Lee De Forest and the Audion

On August 26, 1873, American inventor Lee de Forest was born. He is credited more than 180 patents. In 1906, de Forest invented the Audion, the first triode vacuum tube and the first electrical device which could amplify a weak electrical signal and make it stronger, making radio broadcasting, television, and long-distance telephone service possible, among many other applications. Lee De Forest was born in Iowa to parish priest Henry Swift De Forest; his…
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