{"id":12028,"date":"2023-08-31T23:14:34","date_gmt":"2023-08-31T15:14:34","guid":{"rendered":"https:\/\/lorentzzi.com\/?p=12028"},"modified":"2025-07-07T10:26:57","modified_gmt":"2025-07-07T02:26:57","slug":"dc-vs-ac-6-things-you-must-know","status":"publish","type":"post","link":"https:\/\/lorentzzi.com\/pt\/dc-vs-ac-6-things-you-must-know\/","title":{"rendered":"DC vs. AC: 6 coisas que voc\u00ea deve saber"},"content":{"rendered":"
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No mundo real, h\u00e1 dois tipos principais de energia: Energia CC e energia CA. Mas o que s\u00e3o esses dois tipos de energia? Qual \u00e9 a diferen\u00e7a entre eles? E como voc\u00ea converte energia CC em energia CA ou energia CA em energia CC? Este artigo lhe fornecer\u00e1 uma explica\u00e7\u00e3o mais detalhada.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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O que \u00e9 energia CC?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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DC significa corrente cont\u00ednua, descoberta pela primeira vez por <\/span>Thomas Edison<\/span><\/a><\/span>. Imagine uma bateria com um terminal positivo e um terminal negativo. A corrente CC come\u00e7a no terminal positivo e flui de forma constante ao longo do fio ou do material condutor no circuito, eventualmente fluindo para o terminal negativo. Ela n\u00e3o muda de dire\u00e7\u00e3o \u00e0 medida que flui.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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O que \u00e9 energia CA?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Em contrapartida, a corrente alternada \u00e9 a corrente alternada, inventada por <\/span>Nikola Tesla<\/span><\/a><\/span>e sua dire\u00e7\u00e3o de corrente n\u00e3o \u00e9 fixa como a corrente cont\u00ednua. No ciclo anterior, ela fluir\u00e1 do polo positivo da fonte de alimenta\u00e7\u00e3o para o polo negativo e, no pr\u00f3ximo ciclo, a dire\u00e7\u00e3o do fluxo de corrente mudar\u00e1, e a corrente fluir\u00e1 do polo negativo da fonte de alimenta\u00e7\u00e3o para o polo positivo.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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A diferen\u00e7a entre energia CC e CA<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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H\u00e1 seis diferen\u00e7as entre a fonte de alimenta\u00e7\u00e3o CC e a fonte de alimenta\u00e7\u00e3o CA, que s\u00e3o o princ\u00edpio de funcionamento, as caracter\u00edsticas da tens\u00e3o, a gera\u00e7\u00e3o, a transmiss\u00e3o, a aplica\u00e7\u00e3o e a tens\u00e3o ajust\u00e1vel do transformador. Voc\u00ea pode ver essas diferen\u00e7as no gr\u00e1fico abaixo.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\n\t\t\t \n\t\t\t \n\t\t\t\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\tAspecto<\/span><\/th>\n\t\t\t \t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tDC<\/span><\/th>\n\t\t\t \t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tCA<\/span><\/th>\n\t\t\t \t\t\t\t <\/tr>\n\t\t\t <\/thead>\n\t\t\t \t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tPrinc\u00edpio de funcionamento\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tA corrente flui em uma \u00fanica dire\u00e7\u00e3o constante.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tA dire\u00e7\u00e3o da corrente se inverte periodicamente.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tCaracter\u00edsticas de tens\u00e3o\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tEst\u00e1vel\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tA tens\u00e3o varia de forma senoidal com o tempo.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tGera\u00e7\u00e3o de energia\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tBaterias, c\u00e9lulas fotovoltaicas, c\u00e9lulas de combust\u00edvel, etc.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tD\u00ednamo\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tTransmiss\u00e3o\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tN\u00e3o \u00e9 adequado para transmiss\u00e3o de longa dist\u00e2ncia devido \u00e0 perda de tens\u00e3o na linha.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tOs transformadores s\u00e3o usados para aumentar ou diminuir a tens\u00e3o, o que \u00e9 adequado para a transmiss\u00e3o de longa dist\u00e2ncia.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tAplicativos\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tUsado em dispositivos eletr\u00f4nicos, ve\u00edculos el\u00e9tricos, sistemas fotovoltaicos, etc.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tAmplamente utilizado na rede el\u00e9trica, em eletrodom\u00e9sticos e em equipamentos industriais.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tAumentar e diminuir a tens\u00e3o por meio do transformador\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tN\u00e3o, o magnetismo gerado pela energia CC \u00e9 est\u00e1vel, a tens\u00e3o n\u00e3o pode ser alterada pelo transformador.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tSim\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t <\/tbody>\n\t\t\t<\/table>\n\t\t<\/div>\n\t \t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Como fa\u00e7o para converter um para o outro?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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DC para AC<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Inversor de energia<\/strong>: Um inversor de energia \u00e9 um dispositivo eletr\u00f4nico que pode converter corrente cont\u00ednua (CC) em corrente alternada (CA). Por exemplo, em um sistema de energia solar, um inversor de energia converte a corrente cont\u00ednua gerada por pain\u00e9is fotovoltaicos em corrente alternada dom\u00e9stica, permitindo que a energia solar seja usada por eletrodom\u00e9sticos comuns projetados para operar com energia CA.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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<\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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CA para CC<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Uso\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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H\u00e1 v\u00e1rios produtos que podem converter CA em CC. O primeiro produto \u00e9 uma fonte de alimenta\u00e7\u00e3o de modo comutado (SMPS). As SMPS s\u00e3o amplamente usadas em v\u00e1rios dispositivos eletr\u00f4nicos devido \u00e0 sua alta efici\u00eancia e tamanho compacto. Outro produto \u00e9 um retificador de ponte. Uma ponte retificadora \u00e9 uma estrutura de diodo que converte CA em CC, permitindo que a corrente flua em uma dire\u00e7\u00e3o. Ele pode fornecer uma sa\u00edda CC relativamente suave, o que \u00e9 essencial para alimentar muitos circuitos eletr\u00f4nicos.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Qual \u00e9 o melhor?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A escolha entre CC e CA depende da aplica\u00e7\u00e3o espec\u00edfica.\u00a0<\/span><\/p>

A energia CC \u00e9 mais est\u00e1vel, pode evitar que as luzes de LED pisquem e \u00e9 mais eficiente em termos de energia. A corrente cont\u00ednua tamb\u00e9m \u00e9 amplamente usada em dispositivos eletr\u00f4nicos, como telefones celulares, ve\u00edculos el\u00e9tricos e circuitos eletr\u00f4nicos.<\/span><\/p>

Para dispositivos com requisitos de energia mais altos ou quando v\u00e1rios dispositivos precisam ser alimentados ao mesmo tempo, a CA costuma ser a op\u00e7\u00e3o mais adequada, pois a tens\u00e3o principal da rede el\u00e9trica \u00e9 a CA. E como a maioria dos nossos eletrodom\u00e9sticos \u00e9 alimentada por CA, a CA \u00e9 mais adequada para eletrodom\u00e9sticos.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Aplica\u00e7\u00f5es de energia CC e CA<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Aplica\u00e7\u00f5es de energia CC:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Aplica\u00e7\u00f5es\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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  1. Baterias<\/strong>: As baterias, como as de telefones celulares e de carros, armazenam energia el\u00e9trica na forma de corrente cont\u00ednua.<\/span><\/li>
  2. Pain\u00e9is solares<\/strong>: Os pain\u00e9is solares geram energia el\u00e9trica na forma de corrente cont\u00ednua.<\/span><\/li>
  3. Dispositivos eletr\u00f4nicos<\/strong>: Muitos dispositivos eletr\u00f4nicos pequenos, incluindo telefones celulares, computadores, placas de circuito e luzes de LED, exigem corrente cont\u00ednua.<\/span><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t

    Aplica\u00e7\u00f5es de energia CA:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Aplica\u00e7\u00f5es\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t
    1. Eletricidade dom\u00e9stica<\/strong>: A eletricidade fornecida \u00e0s nossas casas por meio de tomadas \u00e9 de corrente alternada.<\/span><\/li>
    2. Transmiss\u00e3o de energia<\/strong>: A CA \u00e9 a forma preferida de eletricidade para transmiss\u00e3o de energia em larga escala, e a eletricidade usada na rede el\u00e9trica tamb\u00e9m \u00e9 CA.<\/span><\/li>
    3. Equipamentos industriais<\/strong>: Muitos equipamentos industriais, como motores el\u00e9tricos e fog\u00f5es de indu\u00e7\u00e3o, requerem energia CA.<\/span><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
      \n\t\t\t\t
      \n\t\t\t\t\t

      Conclus\u00e3o<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
      \n\t\t\t\t
      \n\t\t\t\t\t\t\t\t\t

      Em resumo, CC e CA t\u00eam suas pr\u00f3prias vantagens e desvantagens, e cada uma tem seus pr\u00f3prios cen\u00e1rios aplic\u00e1veis. E eles podem ser convertidos um no outro.<\/span><\/p>

      Se tiver alguma d\u00favida sobre a diferen\u00e7a entre corrente cont\u00ednua e corrente alternada, voc\u00ea pode enviar um e-mail para <\/span>shonxu@lorentzzi.com<\/span><\/a><\/span> e o <\/span>Lorentzzi<\/b><\/a><\/span> A equipe responder\u00e1 \u00e0s suas perguntas em at\u00e9 24 horas.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

      In the real world, there are two main types of power: DC power and AC power. But what are these two types of power? What is the difference between them? And how do you convert DC power to AC power or AC power to DC power? This article will provide you with a more detailed […]<\/p>\n","protected":false},"author":1,"featured_media":16737,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[117],"tags":[],"class_list":["post-12028","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accessories"],"yoast_head":"\nDC Vs AC: 6 Things You Must Know<\/title>\n<meta name=\"description\" content=\"6 things you must know about DC Vs AC. 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