{"id":17194,"date":"2024-11-26T16:55:38","date_gmt":"2024-11-26T19:55:38","guid":{"rendered":"https:\/\/hangarmma.com.br\/blog\/?post_type=glossary&#038;p=17194"},"modified":"2024-11-26T16:55:38","modified_gmt":"2024-11-26T19:55:38","slug":"determinacao-do-valor-de-um-shunt","status":"publish","type":"glossary","link":"https:\/\/hangarmma.com.br\/blog\/determinacao-do-valor-de-um-shunt\/","title":{"rendered":"Determina\u00e7\u00e3o do Valor de um Shunt"},"content":{"rendered":"<h1>Determina&#xE7;&#xE3;o do Valor de um Resistor Shunt<\/h1>\n    <p>Um <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_a8b6daf633dd2cd7278360ecaccdf9da\" data-link=\"https:\/\/hangarmma.com.br\/blog\/resistor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/resistor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">resistor<\/a> shunt &#xE9; utilizado para medir correntes superiores &#xE0; <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_d2ce78e2048f5b83340b4f0e46878a04\" data-link=\"https:\/\/hangarmma.com.br\/blog\/capacidade\/\" href=\"https:\/\/hangarmma.com.br\/blog\/capacidade\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">capacidade<\/a> de um miliamper&#xED;metro, permitindo que a maior parte da corrente passe pelo <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_a8b6daf633dd2cd7278360ecaccdf9da\" data-link=\"https:\/\/hangarmma.com.br\/blog\/resistor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/resistor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">resistor<\/a> em paralelo, protegendo o medidor. A determina&#xE7;&#xE3;o de seu valor segue as leis dos circuitos paralelos e a aplica&#xE7;&#xE3;o da <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_67aff46ae957fef0b665ebeac12ff642\" data-link=\"https:\/\/hangarmma.com.br\/blog\/lei-de-ohm\/\" href=\"https:\/\/hangarmma.com.br\/blog\/lei-de-ohm\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Lei de Ohm<\/a>.<\/p>\n    \n    <h2>Exemplo<\/h2>\n    <p>No exemplo dado, deseja-se usar um miliamper&#xED;metro com escala de 0-1 mA e <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_3d8e465bb0e985f529caea3d77f570c9\" data-link=\"https:\/\/hangarmma.com.br\/blog\/sensibilidade-2\/\" href=\"https:\/\/hangarmma.com.br\/blog\/sensibilidade-2\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">sensibilidade<\/a> de 50 mV para medir correntes de at&#xE9; 10 mA. Para isso:<\/p>\n    \n    <ol>\n        <li>\n            <strong>C&#xE1;lculo da <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_058568c02e5404c920e987c581a3789d\" data-link=\"https:\/\/hangarmma.com.br\/blog\/resistencia-interna\/\" href=\"https:\/\/hangarmma.com.br\/blog\/resistencia-interna\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">resist&#xEA;ncia interna<\/a> do medidor (Rm):<\/strong>\n            <p>A resist&#xEA;ncia &#xE9; encontrada considerando a <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_0372f202d314382416947d27153aab7c\" data-link=\"https:\/\/hangarmma.com.br\/blog\/queda-de-tensao\/\" href=\"https:\/\/hangarmma.com.br\/blog\/queda-de-tensao\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">queda de tens&#xE3;o<\/a> nominal (50 mV) e a corrente m&#xE1;xima que o medidor pode suportar (1 mA):<\/p>\n            <p><code>Rm = E \/ I = 0,050 V \/ 0,001 A = 50 &#x3A9;<\/code><\/p>\n        <\/li>\n        \n        <li>\n            <strong>Divis&#xE3;o de corrente no <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_f2b88a26ac169e43c6a298924b0d0393\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito-paralelo\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito-paralelo\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito paralelo<\/a>:<\/strong>\n            <p>Apenas 1 mA fluir&#xE1; pelo medidor, enquanto 9 mA passar&#xE3;o pelo shunt. A <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_0372f202d314382416947d27153aab7c\" data-link=\"https:\/\/hangarmma.com.br\/blog\/queda-de-tensao\/\" href=\"https:\/\/hangarmma.com.br\/blog\/queda-de-tensao\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">queda de tens&#xE3;o<\/a> no shunt &#xE9; igual &#xE0; do medidor.<\/p>\n        <\/li>\n        \n        <li>\n            <strong>C&#xE1;lculo da resist&#xEA;ncia do shunt (Rs):<\/strong>\n            <p>Usando a <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_67aff46ae957fef0b665ebeac12ff642\" data-link=\"https:\/\/hangarmma.com.br\/blog\/lei-de-ohm\/\" href=\"https:\/\/hangarmma.com.br\/blog\/lei-de-ohm\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Lei de Ohm<\/a>:<\/p>\n            <p><code>Rs = E \/ Is = 0,050 V \/ 0,009 A &#x2248; 5,55 &#x3A9;<\/code><\/p>\n        <\/li>\n        \n        <li>\n            <strong>Especifica&#xE7;&#xF5;es do shunt:<\/strong>\n            <p>O <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_a8b6daf633dd2cd7278360ecaccdf9da\" data-link=\"https:\/\/hangarmma.com.br\/blog\/resistor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/resistor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">resistor<\/a> deve ter uma <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_ef52c593295f47cf6ea102f7b6ec7080\" data-link=\"https:\/\/hangarmma.com.br\/blog\/tolerancia\/\" href=\"https:\/\/hangarmma.com.br\/blog\/tolerancia\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">toler&#xE2;ncia<\/a> rigorosa (geralmente de 1%) para garantir medi&#xE7;&#xF5;es precisas. <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_79a3611f62bbc0862429105c7a6cefb1\" data-link=\"https:\/\/hangarmma.com.br\/blog\/resistores\/\" href=\"https:\/\/hangarmma.com.br\/blog\/resistores\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">Resistores<\/a> desse tipo s&#xE3;o projetados para dissipar a <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_b8619216dd0506d51ad0093ac9f798ab\" data-link=\"https:\/\/hangarmma.com.br\/blog\/energia-2\/\" href=\"https:\/\/hangarmma.com.br\/blog\/energia-2\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">energia<\/a> de forma segura e eficiente.<\/p>\n        <\/li>\n    <\/ol>\n    \n    <h2>Conclus&#xE3;o<\/h2>\n    <p>O valor calculado do <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_a8b6daf633dd2cd7278360ecaccdf9da\" data-link=\"https:\/\/hangarmma.com.br\/blog\/resistor\/\" href=\"https:\/\/hangarmma.com.br\/blog\/resistor\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">resistor<\/a> shunt &#xE9; de <strong>5,55 &#x3A9;<\/strong>, e ele &#xE9; essencial para ajustar o miliamper&#xED;metro para a corrente total pretendida no <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"cmtt_8475a091b5ac4429a52bc047365d267e\" data-link=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" href=\"https:\/\/hangarmma.com.br\/blog\/circuito\/\" target=\"_blank\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">circuito<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Determina\u00e7\u00e3o do Valor de um Shunt Determina\u00e7\u00e3o do Valor de um Resistor Shunt Um resistor shunt \u00e9 utilizado para medir correntes superiores \u00e0 capacidade de um miliamper\u00edmetro, permitindo que a maior parte da corrente passe pelo resistor em paralelo, protegendo o medidor. A determina\u00e7\u00e3o de seu valor segue as leis dos circuitos paralelos e a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"glossary-categories":[],"glossary-tags":[],"class_list":["post-17194","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Determina\u00e7\u00e3o do Valor de um Shunt - HANGAR MMA<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hangarmma.com.br\/blog\/determinacao-do-valor-de-um-shunt\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Determina\u00e7\u00e3o do Valor de um Shunt - HANGAR MMA\" \/>\n<meta property=\"og:description\" content=\"Determina\u00e7\u00e3o do Valor de um Shunt Determina\u00e7\u00e3o do Valor de um Resistor Shunt Um resistor shunt \u00e9 utilizado para medir correntes superiores \u00e0 capacidade de um miliamper\u00edmetro, permitindo que a maior parte da corrente passe pelo resistor em paralelo, protegendo o medidor. 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