{"id":756,"date":"2018-11-20T08:24:13","date_gmt":"2018-11-20T11:24:13","guid":{"rendered":"https:\/\/museuweg.net\/blog\/?p=756"},"modified":"2026-02-09T15:45:29","modified_gmt":"2026-02-09T18:45:29","slug":"como-funcionam-os-transformadores","status":"publish","type":"post","link":"https:\/\/museuweg.net\/blog\/como-funcionam-os-transformadores\/","title":{"rendered":"Como funcionam os transformadores?"},"content":{"rendered":"

As instala\u00e7\u00f5es el\u00e9tricas muitas vezes necessitam que a tens\u00e3o fornecida pelas companhias de energia el\u00e9trica aumente ou diminua, para isso, \u00e9 preciso um dispositivo que permita fazer essa transforma\u00e7\u00e3o de tens\u00e3o. Imagine, por exemplo, que voc\u00ea comprou uma geladeira com uma tens\u00e3o de 110 V, por\u00e9m, em sua casa, a tens\u00e3o \u00e9 220 V. Nesse caso, a forma mais f\u00e1cil de n\u00e3o danificar a sua geladeira, \u00e9 utilizar um transformador.<\/p>\n

Respons\u00e1vel por garantir o uso de energia el\u00e9trica em resid\u00eancias e ind\u00fastrias, o transformador de tens\u00e3o \u00e9 um dispositivo de corrente alternada, operando sob os princ\u00edpios eletromagn\u00e9ticos da Lei de Faraday e da Lei de Lenz. Existem dois modelos diferentes de transformadores: o transformador de pot\u00eancia, que recebe a energia el\u00e9trica da usina e repassa para a rede de transmiss\u00e3o, e o transformador de distribui\u00e7\u00e3o, que \u00e9 a \u00faltima etapa antes da energia el\u00e9trica chegar at\u00e9 o consumidor.<\/p>\n

\"transformador-eletrico-weg\"<\/a><\/p>\n

Com voc\u00eas: o transformador el\u00e9trico<\/strong>
\nO transformador \u00e9 constitu\u00eddo por uma pe\u00e7a de ferro, chamada de n\u00facleo e espiras condutoras em duas regi\u00f5es distintas, gerando duas bobinas, elas s\u00e3o isoladas eletricamente entre si, denominadas prim\u00e1ria e secund\u00e1ria. Na bobina prim\u00e1ria \u00e9 aplicada a tens\u00e3o que se deseja transformar, j\u00e1 na bobina secund\u00e1ria \u00e9 onde sai a tens\u00e3o j\u00e1 transformada. Veja a ilustra\u00e7\u00e3o:<\/p>\n

\"transformador-e-nucleo2\"<\/a><\/p>\n

Esquema de um transformador<\/strong>
\nA transforma\u00e7\u00e3o ocorre quando \u00e9 aplicada uma tens\u00e3o alternada no enrolamento prim\u00e1rio fazendo surgir uma corrente, tamb\u00e9m alternada, que percorrer\u00e1 todo o enrolamento. Atrav\u00e9s dessa corrente estabelece-se um campo magn\u00e9tico no n\u00facleo de ferro, esse por sua vez sofre v\u00e1rias flutua\u00e7\u00f5es e, como consequ\u00eancia da varia\u00e7\u00e3o de campo magn\u00e9tico sobre suas espiras surge, na segunda bobina, uma tens\u00e3o induzida.
\n\u00a0
\n***<\/p>\n

Quer saber ainda mais sobre os transformadores, e mais, v\u00ea-los de pertinho? Aqui no Museu WEG h\u00e1 uma sala com geradores, transformadores e motores el\u00e9tricos! A entrada \u00e9 gratuita, e se preferir, o tour virtual est\u00e1 dispon\u00edvel neste link: https:\/\/museuweg.net\/tour-virtual\/<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

As instala\u00e7\u00f5es el\u00e9tricas muitas vezes necessitam que a tens\u00e3o fornecida pelas companhias de energia el\u00e9trica aumente ou diminua, para isso,…<\/p>\n","protected":false},"author":4,"featured_media":761,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,4],"tags":[286,77,8,22,285],"class_list":["post-756","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eletricidade","category-weg","tag-como-funciona","tag-eletricidade-2","tag-motor","tag-museu-weg","tag-transformador"],"yoast_head":"\nComo funcionam os transformadores? - Blog com Ci\u00eancia<\/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:\/\/museuweg.net\/blog\/como-funcionam-os-transformadores\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como funcionam os transformadores? 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