{"id":80611,"date":"2024-01-14T13:12:20","date_gmt":"2024-01-14T13:12:20","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/bateria-aaa-tamanho-peso-e-aplicacoes\/"},"modified":"2024-01-20T09:55:36","modified_gmt":"2024-01-20T09:55:36","slug":"bateria-aaa-tamanho-peso-e-aplicacoes","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/pt-br\/bateria-aaa-tamanho-peso-e-aplicacoes\/","title":{"rendered":"Bateria AAA | Tamanho, peso e aplica\u00e7\u00f5es"},"content":{"rendered":"<h2>O Que Voc\u00ea Precisa Saber Sobre as Pilhas AAA<\/h2>\n<h2>Introdu\u00e7\u00e3o \u00e0s Pilhas AAA<\/h2>\n<p>As pilhas AAA s\u00e3o uma das formas mais comuns de baterias cil\u00edndricas de c\u00e9lula \u00fanica. Elas s\u00e3o amplamente utilizadas em dispositivos eletr\u00f4nicos port\u00e1teis, brinquedos e controles remotos. V\u00e1rias qu\u00edmicas diferentes s\u00e3o empregadas na sua constru\u00e7\u00e3o, com a voltagem dos terminais, capacidade e taxas pr\u00e1ticas de descarga variando de acordo com a qu\u00edmica da c\u00e9lula. Contudo, dispositivos projetados para c\u00e9lulas AAA geralmente aceitam tens\u00f5es de 1.2 a 1.5 V, a menos que especificado de outra forma pelo fabricante.<\/p>\n<h2>Tipos de Pilhas AAA<\/h2>\n<p>As pilhas AAA s\u00e3o divididas basicamente em prim\u00e1rias e secund\u00e1rias. As prim\u00e1rias incluem as pilhas alcalinas, de l\u00edtio, zinco-carbono e zinco-cloreto, enquanto as secund\u00e1rias s\u00e3o representadas pelas baterias NiMH e NiCd.<\/p>\n<h2>Dimens\u00f5es e Peso<\/h2>\n<p>Uma pilha AAA mede 10,5 mm de di\u00e2metro e 44,5 mm de comprimento, pesando cerca de 11,5 gramas no caso das alcalinas e aproximadamente 7,6 gramas para as de l\u00edtio. As recarreg\u00e1veis NiMH s\u00e3o mais pesadas, pesando tipicamente entre 14 e 15 gramas.<\/p>\n<h2>Funcionamento de uma Pilha El\u00e9trica<\/h2>\n<p>Uma pilha el\u00e9trica \u00e9 uma fonte de energia el\u00e9trica cont\u00ednua (DC). Ela converte energia qu\u00edmica armazenada em energia el\u00e9trica atrav\u00e9s de um processo eletroqu\u00edmico, fornecendo uma fonte de for\u00e7a eletromotriz para permitir que correntes fluam em circuitos el\u00e9tricos e eletr\u00f4nicos. Uma pilha t\u00edpica consiste em uma ou mais c\u00e9lulas voltaicas.<\/p>\n<h2>Princ\u00edpio Eletroqu\u00edmico<\/h2>\n<p>O princ\u00edpio fundamental em uma c\u00e9lula eletroqu\u00edmica envolve rea\u00e7\u00f5es redox espont\u00e2neas em dois eletrodos separados por um eletr\u00f3lito, que \u00e9 uma subst\u00e2ncia condutora i\u00f4nica e eletricamente isolante.<\/p>\n<h2>Caracter\u00edsticas das Pilhas AAA<\/h2>\n<p>Para comparar e entender a capacidade de cada bateria, alguns par\u00e2metros importantes s\u00e3o caracter\u00edsticos de cada bateria. Esses par\u00e2metros incluem a tens\u00e3o da c\u00e9lula, tens\u00e3o de corte, capacidade, taxa de C e autodescarga.<\/p>\n<h2>Qu\u00edmica das Pilhas Alcalinas<\/h2>\n<p>Em termos simples, cada bateria \u00e9 projetada para manter o c\u00e1todo e o \u00e2nodo separados para prevenir uma rea\u00e7\u00e3o. Quando a bateria \u00e9 colocada em um dispositivo e o dispositivo \u00e9 ligado, fecha-se o circuito, e os el\u00e9trons fluem do \u00e2nodo para o c\u00e1todo atrav\u00e9s do circuito. Esta rea\u00e7\u00e3o qu\u00edmica da bateria, esse fluxo de el\u00e9trons atrav\u00e9s do fio, \u00e9 a eletricidade. Em uma pilha alcalina, o eletrodo negativo \u00e9 de zinco e o positivo \u00e9 de di\u00f3xido de mangan\u00eas (MnO<sub>2<\/sub>). O eletr\u00f3lito alcalino de hidr\u00f3xido de pot\u00e1ssio (KOH) n\u00e3o \u00e9 consumido durante a rea\u00e7\u00e3o.<\/p>\n<h2>Outros Tipos de Pilhas<\/h2>\n<p>Al\u00e9m das pilhas AAA, existem v\u00e1rios outros tipos de baterias eletroqu\u00edmicas, classificadas por tamanho, formato, qu\u00edmica e aplica\u00e7\u00f5es, incluindo as baterias AA, AAAA, C, D, e as baterias de l\u00edtio, pol\u00edmero de l\u00edtio, \u00edon de l\u00edtio, entre outras.<\/p>\n<h2>Conclus\u00e3o<\/h2>\n<p>Entender as caracter\u00edsticas das pilhas AAA e sua qu\u00edmica \u00e9 fundamental para selecionar a bateria adequada para cada tipo de dispositivo, garantindo efici\u00eancia e durabilidade.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2022\/11\/AAA-battery-size-weight-applications-2.png\" alt=\"\" \/><\/p>\n<div style=\"text-align: center; font-size: 20px;\">\n    <a href=\"https:\/\/www.electricity-magnetism.org\/electric-battery\/aaa-battery\/\">Original Article<\/a>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uma bateria AAA \u00e9 uma c\u00e9lula \u00fanica que mede 10,5 mm (0,41 pol.) de di\u00e2metro e 44,5 mm (1,75 pol.) de comprimento. A bateria AAA \u00e9 um dos tipos mais comuns de baterias cil\u00edndricas de c\u00e9lula \u00fanica.<\/p>\n","protected":false},"author":1,"featured_media":5102,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-80611","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nao-categorizado","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bateria AAA | Tamanho, peso e aplica\u00e7\u00f5es<\/title>\n<meta name=\"description\" content=\"Uma bateria AAA \u00e9 uma c\u00e9lula \u00fanica que mede 10,5 mm (0,41 pol.) de di\u00e2metro e 44,5 mm (1,75 pol.) de comprimento. 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