{"id":80476,"date":"2024-01-14T13:06:06","date_gmt":"2024-01-14T13:06:06","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/voltimetro-cc-e-ca\/"},"modified":"2024-01-20T09:49:05","modified_gmt":"2024-01-20T09:49:05","slug":"voltimetro-cc-e-ca","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/pt-br\/voltimetro-cc-e-ca\/","title":{"rendered":"Volt\u00edmetro CC e CA"},"content":{"rendered":"<h2>Volt\u00edmetros de Corrente Cont\u00ednua (CC) e Corrente Alternada (CA)<\/h2>\n<h3>Introdu\u00e7\u00e3o aos Volt\u00edmetros de CC e CA<\/h3>\n<p>Um volt\u00edmetro \u00e9 um instrumento essencial na medi\u00e7\u00e3o de tens\u00f5es el\u00e9tricas. Diferenciando-se principalmente em dois tipos, os volt\u00edmetros de Corrente Cont\u00ednua (CC) e Corrente Alternada (CA) t\u00eam aplica\u00e7\u00f5es espec\u00edficas e caracter\u00edsticas distintas. O volt\u00edmetro de CC mede a tens\u00e3o de corrente cont\u00ednua, enquanto o de CA mede a tens\u00e3o de corrente alternada.<\/p>\n<h3>Medi\u00e7\u00e3o e Caracter\u00edsticas do Volt\u00edmetro de CC<\/h3>\n<p>O volt\u00edmetro de CC \u00e9 projetado para medir o valor de pico da tens\u00e3o de corrente cont\u00ednua. Em sua constru\u00e7\u00e3o, n\u00e3o se utiliza um retificador antes de um amplificador multist\u00e1gio. Este tipo de volt\u00edmetro \u00e9 fundamental em aplica\u00e7\u00f5es onde a precis\u00e3o na medi\u00e7\u00e3o de tens\u00f5es de corrente cont\u00ednua \u00e9 cr\u00edtica.<\/p>\n<h3>Medi\u00e7\u00e3o e Caracter\u00edsticas do Volt\u00edmetro de CA<\/h3>\n<p>Por outro lado, o volt\u00edmetro de CA \u00e9 usado para medir o valor eficaz (RMS) da tens\u00e3o de corrente alternada. Este tipo de volt\u00edmetro geralmente incorpora um retificador, que permite a medi\u00e7\u00e3o do valor RMS da tens\u00e3o de CA.<\/p>\n<h3>Tipos Comuns de Volt\u00edmetros<\/h3>\n<ul>\n<li><strong>Volt\u00edmetro de Bobina M\u00f3vel com \u00cdm\u00e3 Permanente (PMMC)<\/strong>: Tamb\u00e9m conhecido como medidor de D\u2019Arsonval ou galvan\u00f4metro, o PMMC usa a deflex\u00e3o angular em um campo magn\u00e9tico uniforme para determinar a corrente que flui atrav\u00e9s da bobina.<\/li>\n<li><strong>Volt\u00edmetro de Ferro M\u00f3vel<\/strong>: Utilizado principalmente para medir tens\u00f5es e correntes alternadas, consiste em pe\u00e7as de ferro macio m\u00f3veis, atuadas pela corrente na bobina.<\/li>\n<li><strong>Volt\u00edmetro Digital (DVM)<\/strong>: Exibe valores de tens\u00e3o em n\u00fameros discretos ao inv\u00e9s de uma deflex\u00e3o de ponteiro, sendo preferido sobre os volt\u00edmetros anal\u00f3gicos. Baseia-se em um conversor anal\u00f3gico-digital integrador.<\/li>\n<li><strong>Electrodinam\u00f4metro<\/strong>: Utilizado para medir tens\u00f5es e correntes em CA, principalmente em frequ\u00eancias de energia e \u00e1udio mais baixas.<\/li>\n<li><strong>Volt\u00edmetro de Tipo Retificador<\/strong>: Converte CA em CC para medi\u00e7\u00e3o. Os inversores realizam a opera\u00e7\u00e3o inversa.<\/li>\n<li><strong>Volt\u00edmetro de Tipo Indutivo<\/strong>: Funciona com base na indu\u00e7\u00e3o m\u00fatua, sendo usado apenas para a medi\u00e7\u00e3o de energia CA.<\/li>\n<li><strong>Volt\u00edmetro Eletrost\u00e1tico<\/strong>: \u00danico que mede a tens\u00e3o diretamente, sem contato f\u00edsico, evitando a transfer\u00eancia de carga eletrost\u00e1tica ou a carga da fonte de tens\u00e3o.<\/li>\n<\/ul>\n<h3>Diferen\u00e7as entre Volt\u00edmetros de CC e CA<\/h3>\n<p>Embora ambos os tipos de volt\u00edmetros sejam essenciais para medir tens\u00f5es, suas diferen\u00e7as est\u00e3o principalmente na forma como processam e medem as tens\u00f5es. Enquanto o volt\u00edmetro de CC foca no valor de pico da tens\u00e3o de corrente cont\u00ednua, o de CA mede o valor eficaz da tens\u00e3o de corrente alternada. Essas diferen\u00e7as s\u00e3o cruciais para a escolha do volt\u00edmetro adequado, dependendo da aplica\u00e7\u00e3o espec\u00edfica.<\/p>\n<h3>Conclus\u00e3o<\/h3>\n<p>A escolha entre um volt\u00edmetro de CC e um de CA depende da natureza da aplica\u00e7\u00e3o. Compreender suas diferen\u00e7as e caracter\u00edsticas ajuda a garantir medi\u00e7\u00f5es precisas e eficientes, fundamentais para o diagn\u00f3stico e a manuten\u00e7\u00e3o de sistemas el\u00e9tricos.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2022\/07\/AC-DC-voltmeter.png\" alt=\"\" \/><\/p>\n<div style=\"text-align: center; font-size: 20px;\">\n    <a href=\"https:\/\/www.electricity-magnetism.org\/voltmeter\/dc-and-ac-voltmeter\/\">Original Article<\/a>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O volt\u00edmetro DC \u00e9 usado para medir a tens\u00e3o DC, enquanto o volt\u00edmetro AC \u00e9 usado para medir a tens\u00e3o AC. Volt\u00edmetro CC e CA<\/p>\n","protected":false},"author":1,"featured_media":2885,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-80476","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>Volt\u00edmetro CC e CA<\/title>\n<meta name=\"description\" content=\"O volt\u00edmetro DC \u00e9 usado para medir a tens\u00e3o DC, enquanto o volt\u00edmetro AC \u00e9 usado para medir a tens\u00e3o AC. 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