Some of the earliest Audion AM radio transmitters, built by de Forest around 1916. The invention of the Audion oscillator in 1912 made inexpensive sound radio transmission possible, and was …

During the past decades Audion has grown to become a leading name in the packaging industry. Today, with machine plants in Germany and The Netherlands and a worldwide dealer network, …

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) …

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 …

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Nov 19, 2023 · Building on earlier "diode" vacuum tubes, de Forest added a third electrode to make what he called the "Audion." This was a grid of wire placed between the cathode …

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