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Voltagem dos carregadores de celular.

Digital - Notícias - 4 de fevereiro de 2019

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Pedido feito por uma leitora, este mês vou tirar uma dúvida sobre a voltagem dos carregadores de celular. Diz ela que — estando em um shopping onde todas as tomadas tinham um aviso de voltagem 220v, e como a energia elétrica na casa dela é de 110v — ficou em dúvida e com medo de colocar o celular para carregar e o queimar. Pois bem, todos os carregadores de celular — pelo menos os originais, fabricados por uma empresa séria de eletrônicos e homologados pelo órgão competente que no caso do Brasil é a ANATEL — têm a capacidade de ser bivolts, ou seja, tanto nos locais em que a energia seja de 127v ou seja 220v, o carregador tem a competência de transformar essa voltagem em uma carga menor. Isso mesmo! Na verdade, os celulares necessitam de uma carga muito menor que 220v ou 127v para carregarem. O carregador de celular transforma a energia de entrada, entre 100 a 240v, para uma energia de saída de 5v. Tanto é que, inclusive, conseguimos carregar nossos celulares através de uma conexão USB que trabalha com uma voltagem de 5v. Portanto, amiga leitora, na próxima vez pode utilizar sem medo as tomadas 127v ou 220v, que não terá problemas com a carga sofrida pelo seu celular e que não danificará seu aparelho por conta da voltagem da energia elétrica. Vale a pena lembrar que as tomadas comuns dos eletrodomésticos não possuem essa opção de trabalharem em ambas as redes de voltagem como os celulares. Então, nesses casos, antes de ligar qualquer aparelho em uma rede elétrica, deve ter a certeza da capacidade de voltagem desse aparelho em relação à da rede.

Por Marcelo Domingos Neto – Analista de Sistemas, Especialista em Informática na Educação.

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