{"id":82471,"date":"2024-01-14T13:19:06","date_gmt":"2024-01-14T13:19:06","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/fabrication-de-resistances\/"},"modified":"2024-01-23T13:08:12","modified_gmt":"2024-01-23T13:08:12","slug":"fabrication-de-resistances","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/fr\/fabrication-de-resistances\/","title":{"rendered":"Fabrication de r\u00e9sistances"},"content":{"rendered":"<h2>Fabrication des R\u00e9sistances \u00c9lectroniques<\/h2>\n<p>Un composant indispensable dans le monde de l&rsquo;\u00e9lectronique est la r\u00e9sistance. Cet \u00e9l\u00e9ment passif, qui ne n\u00e9cessite aucune source d&rsquo;\u00e9nergie externe, joue un r\u00f4le crucial en r\u00e9sistant ou en s&rsquo;opposant au flux de courant \u00e9lectrique dans un circuit. Fabriqu\u00e9es \u00e0 partir de mat\u00e9riaux tels que le carbone, le m\u00e9tal ou des mat\u00e9riaux enroul\u00e9s, les r\u00e9sistances se pr\u00e9sentent sous diverses formes et tailles. Elles sont marqu\u00e9es d&rsquo;un code de couleurs ou d&rsquo;une valeur num\u00e9rique indiquant leur r\u00e9sistance, mesur\u00e9e en ohms, symbolis\u00e9e par la lettre grecque omega (\u03a9).<\/p>\n<p>Les r\u00e9sistances sont couramment utilis\u00e9es dans les circuits \u00e9lectroniques pour contr\u00f4ler le flux de courant, limiter la quantit\u00e9 de courant traversant un circuit, et fournir une chute de tension sp\u00e9cifique. Elles peuvent \u00e9galement servir \u00e0 diviser la tension, g\u00e9n\u00e9rer de la chaleur, et remplir d&rsquo;autres fonctions. En somme, les r\u00e9sistances sont des composants essentiels en \u00e9lectronique et en g\u00e9nie \u00e9lectrique, trouvant leur application dans une vaste gamme de dispositifs, tels que les ordinateurs, les t\u00e9l\u00e9visions, les radios, et bien plus.<\/p>\n<h2>Techniques de Fabrication des R\u00e9sistances<\/h2>\n<p>La fabrication des r\u00e9sistances peut se faire via diverses techniques, chacune adapt\u00e9e \u00e0 un type sp\u00e9cifique de r\u00e9sistance :<\/p>\n<ul>\n<li><strong>D\u00e9p\u00f4t de film :<\/strong> Les r\u00e9sistances \u00e0 film m\u00e9tallique et \u00e0 film mince sont cr\u00e9\u00e9es en d\u00e9posant une couche mince de mat\u00e9riau r\u00e9sistif sur un substrat en c\u00e9ramique via un processus de d\u00e9p\u00f4t sous vide.<\/li>\n<li><strong>Enroulement de fil :<\/strong> Les r\u00e9sistances bobin\u00e9es sont fabriqu\u00e9es en enroulant un fil r\u00e9sistif autour d&rsquo;un noyau en c\u00e9ramique ou en fibre de verre, \u00e0 l&rsquo;aide de machines d&rsquo;enroulement automatis\u00e9es.<\/li>\n<li><strong>Composition de carbone :<\/strong> Les r\u00e9sistances \u00e0 composition de carbone sont r\u00e9alis\u00e9es en m\u00e9langeant de la poudre de carbone avec un liant, qui est ensuite moul\u00e9 en forme cylindrique et cuit.<\/li>\n<li><strong>Film \u00e9pais :<\/strong> Les r\u00e9sistances \u00e0 film \u00e9pais sont produites par l&rsquo;impression \u00e9cran d&rsquo;une couche \u00e9paisse de mat\u00e9riau r\u00e9sistif sur un substrat en c\u00e9ramique, puis par cuisson dans un four \u00e0 haute temp\u00e9rature.<\/li>\n<\/ul>\n<p>Une fois fabriqu\u00e9es, les r\u00e9sistances peuvent \u00eatre ajust\u00e9es pour atteindre une valeur de r\u00e9sistance pr\u00e9cise gr\u00e2ce \u00e0 des techniques de coupe au laser ou de coupe m\u00e9canique. Elles sont ensuite g\u00e9n\u00e9ralement recouvertes d&rsquo;une couche protectrice pour pr\u00e9venir les dommages dus \u00e0 des facteurs environnementaux tels que l&rsquo;humidit\u00e9, la temp\u00e9rature et les vibrations.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2022\/01\/logo.png\" alt=\"Resistor Manufacturing\" \/><\/p>\n<div style=\"text-align: center; font-size: 20px;\">\n    <a href=\"https:\/\/www.electricity-magnetism.org\/resistor-manufacturing\/\">Original Article<\/a>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les r\u00e9sistances peuvent \u00eatre fabriqu\u00e9es \u00e0 l&rsquo;aide de diverses techniques, notamment le bobinage de fil, le d\u00e9p\u00f4t de film et la composition de carbone.<\/p>\n","protected":false},"author":1,"featured_media":1576,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[10],"tags":[],"class_list":["post-82471","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classifiee","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 - 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