TRIODE

Triode

A triode is an electronic amplifying vacuum tube which consists of three electrodes inside an evacuated glass envelope: a heated filament or cathode, a grid, and a plate . Invented in 1906 by Lee De Forest by adding a grid to the Fleming valve, the triode was the first electronic amplification device, and the ancestor of other types of vacuum tubes such as the tetrode and pentode. Its invention founded the electronics age, making possible amplified radio technology and long-distance telephony. Triodes were widely used in consumer electronics devices such as radios and televisions until the 1970s, when transistors replaced them. Today their main remaining use is in ...

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triode

Noun

  1. A thermionic valve containing an anode, a cathode, and a control grid; small changes to the charge on the grid control the flow from cathode to anode which makes amplification possible


The above text is a snippet from Wiktionary: triode
and as such is available under the Creative Commons Attribution/Share-Alike License.

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