diodo semicondutor

thumb|Various semiconductor diodes. Left: A four-diode bridge rectifier. Next to it is a [[1N4148 signal diode. On the far right is a Zener diode. In most diodes, a white or black painted band identifies the cathode into which electrons will flow when the diode is conducting. Electron flow is the reverse of conventional current flow.]]

AI overview

A diode is an electronic component made from semiconductor material that allows electric current to flow in one direction while blocking it in the other. Diodes are used in many applications, such as converting alternating current to direct current in power supplies and protecting circuits from damage caused by reversed current flow.

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Key facts

Electronic component.name: Thermionic diode
Electronic component.image: 2-50A 2 (2).JPG
Electronic component.caption: A high power vacuum tube diode used in radio equipment as a rectifier
Electronic component.type: Active
Electronic component.inventor: John Ambrose Fleming
Electronic component.invention_Year: 1904
Electronic component.pins: Plate and cathode
Electronic component.symbol: 100px
Electronic component.image_size: 225px
Electronic component.working_principle: Thermionic emission
Electronic component.symbol_caption: The symbol for an indirectly heated vacuum tube diode. From top to bottom, the element names are: plate, cathode, and heater.

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Wikidata facts

Subclass of: passive electronic component
Image: Diode-closeup.jpg
Has use: electrical resistance

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Commons category: Diodes
topic's main category: Category:Diodes
described by source: Armenian Soviet Encyclopedia
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
maintained by WikiProject: WikiProject Physics

Sources (4)

via Wikidata · CC0

Article · Português

Diodo semicondutor é um elemento ou componente eletrônico composto de um cristal semicondutor de silício ou germânio numa película cristalina cujas faces opostas são dopadas por diferentes materiais durante sua formação, o que causa a polarização de cada uma das extremidades. É o tipo mais simples de componente eletrônico semicondutor, usado como retificador de corrente elétrica entre outras aplicações. Possui uma queda de tensão de, aproximadamente, 0,3 V (germânio) e 0,7 V (silício).

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