{"id":80704,"date":"2024-01-14T13:16:31","date_gmt":"2024-01-14T13:16:31","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/diferenca-entre-amperimetro-dc-e-ac\/"},"modified":"2024-01-20T09:59:53","modified_gmt":"2024-01-20T09:59:53","slug":"diferenca-entre-amperimetro-dc-e-ac","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/pt-br\/diferenca-entre-amperimetro-dc-e-ac\/","title":{"rendered":"Diferen\u00e7a entre amper\u00edmetro DC e AC"},"content":{"rendered":"<h2>Diferen\u00e7a Entre Amper\u00edmetros de Corrente Cont\u00ednua (CC) e Corrente Alternada (CA)<\/h2>\n<h2>Introdu\u00e7\u00e3o aos Amper\u00edmetros<\/h2>\n<p>Um amper\u00edmetro \u00e9 um instrumento utilizado para medir correntes el\u00e9tricas. Para medir a corrente em um fio, geralmente \u00e9 necess\u00e1rio interromper o circuito e inserir o amper\u00edmetro, de modo que a corrente a ser medida passe atrav\u00e9s do medidor. Os amper\u00edmetros s\u00e3o desenhados como dispositivos de baixa resist\u00eancia e s\u00e3o colocados em s\u00e9rie com o circuito a ser medido. Existem dois tipos principais de amper\u00edmetros: anal\u00f3gicos e digitais.<\/p>\n<h2>Exemplos de Uso de Amper\u00edmetros<\/h2>\n<ul>\n<li><strong>Circuitos Dom\u00e9sticos:<\/strong> A corrente em um circuito t\u00edpico nos Estados Unidos \u00e9 de 15-20 amperes.<\/li>\n<li><strong>Circuitos Automotivos:<\/strong> A corrente atrav\u00e9s da bateria ou alternador de um carro \u00e9 tipicamente de 50-150 amperes.<\/li>\n<li><strong>Pequenos Eletr\u00f4nicos:<\/strong> A corrente atrav\u00e9s da fonte de alimenta\u00e7\u00e3o de um pequeno dispositivo eletr\u00f4nico, como um celular ou laptop, \u00e9 geralmente de 0.1-1 ampere.<\/li>\n<\/ul>\n<h2>Diferen\u00e7as Entre Amper\u00edmetros CC e CA<\/h2>\n<p>As principais diferen\u00e7as entre os amper\u00edmetros de Corrente Cont\u00ednua (CC) e Corrente Alternada (CA) residem em seu design e opera\u00e7\u00e3o. Vejamos algumas dessas diferen\u00e7as:<\/p>\n<ul>\n<li><strong>Mecanismo de Detec\u00e7\u00e3o:<\/strong> Amper\u00edmetros CC normalmente usam um mecanismo de bobina m\u00f3vel ou ferro m\u00f3vel para detectar a corrente, enquanto amper\u00edmetros CA frequentemente utilizam um transformador de corrente (TC).<\/li>\n<li><strong>Calibra\u00e7\u00e3o:<\/strong> Amper\u00edmetros CC s\u00e3o calibrados para medir corrente cont\u00ednua, enquanto os amper\u00edmetros CA s\u00e3o calibrados para medir corrente alternada. A calibra\u00e7\u00e3o do amper\u00edmetro depende da forma de onda da corrente a ser medida.<\/li>\n<li><strong>Faixa de Medi\u00e7\u00e3o:<\/strong> A faixa de medi\u00e7\u00e3o de um amper\u00edmetro CC \u00e9 geralmente limitada \u00e0 corrente m\u00e1xima que o instrumento pode manipular. Amper\u00edmetros CA podem medir uma ampla gama de correntes alternadas usando TCs com diferentes raz\u00f5es.<\/li>\n<li><strong>Precis\u00e3o:<\/strong> Amper\u00edmetros CC s\u00e3o geralmente mais precisos que os amper\u00edmetros CA, pois a medi\u00e7\u00e3o da corrente cont\u00ednua n\u00e3o \u00e9 afetada pela frequ\u00eancia da corrente. Erros podem ocorrer em amper\u00edmetros CA devido a deslocamentos de fase ou distor\u00e7\u00f5es harm\u00f4nicas na forma de onda da corrente.<\/li>\n<li><strong>Aplica\u00e7\u00f5es:<\/strong> Amper\u00edmetros CC s\u00e3o comumente usados em aplica\u00e7\u00f5es automotivas, mar\u00edtimas e eletr\u00f4nicas, enquanto amper\u00edmetros CA s\u00e3o comuns em sistemas de energia, distribui\u00e7\u00e3o el\u00e9trica e aplica\u00e7\u00f5es industriais.<\/li>\n<\/ul>\n<h2>Tipos de Amper\u00edmetros<\/h2>\n<ul>\n<li><strong>Amper\u00edmetro de Bobina M\u00f3vel:<\/strong> Usam uma bobina de fio suspensa em um campo magn\u00e9tico. A corrente que passa pela bobina causa um desvio mec\u00e2nico de um ponteiro em uma escala calibrada.<\/li>\n<li><strong>Amper\u00edmetro de Ferro M\u00f3vel:<\/strong> Utilizam um peda\u00e7o de material ferromagn\u00e9tico que se move em resposta ao campo magn\u00e9tico gerado pela corrente medida.<\/li>\n<li><strong>Amper\u00edmetro de Tipo Retificador:<\/strong> Usados para medir corrente alternada, convertem a corrente CA em corrente CC que pode ser medida com um amper\u00edmetro de bobina m\u00f3vel ou ferro m\u00f3vel.<\/li>\n<li><strong>Amper\u00edmetro Digital:<\/strong> Utilizam circuitos eletr\u00f4nicos para converter a medi\u00e7\u00e3o da corrente em uma exibi\u00e7\u00e3o digital.<\/li>\n<li><strong>Amper\u00edmetro de Garra:<\/strong> Usam um sensor magn\u00e9tico para medir o campo magn\u00e9tico gerado pela corrente que passa por um fio.<\/li>\n<li><strong>Amper\u00edmetro T\u00e9rmico:<\/strong> Medem a corrente pela gera\u00e7\u00e3o de calor em um condutor quando uma corrente passa por ele.<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2022\/01\/logo.png\" alt=\"\" \/><\/p>\n<div style=\"text-align: center; font-size: 20px;\">\n    <a href=\"https:\/\/www.electricity-magnetism.org\/difference-between-dc-and-ac-ammeter\/\">Original Article<\/a>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A principal diferen\u00e7a entre um amper\u00edmetro DC (corrente cont\u00ednua) e AC (corrente alternada) est\u00e1 em seu design e opera\u00e7\u00e3o. Aqui est\u00e3o algumas diferen\u00e7as importantes.<\/p>\n","protected":false},"author":1,"featured_media":1581,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-80704","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>Diferen\u00e7a entre amper\u00edmetro DC e AC<\/title>\n<meta name=\"description\" content=\"A principal diferen\u00e7a entre um amper\u00edmetro DC (corrente cont\u00ednua) e AC (corrente alternada) est\u00e1 em seu design e opera\u00e7\u00e3o. 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