{"id":1310,"date":"2026-07-22T05:33:10","date_gmt":"2026-07-22T05:33:10","guid":{"rendered":"https:\/\/lstransformer.com\/how-does-a-transformer-change-voltage\/"},"modified":"2026-09-28T01:43:13","modified_gmt":"2026-09-28T01:43:13","slug":"how-does-a-transformer-change-voltage","status":"publish","type":"post","link":"https:\/\/www.lstransformer.com\/fr\/how-does-a-transformer-change-voltage\/","title":{"rendered":"How does a transformer change voltage?"},"content":{"rendered":"

How does\u00a0a\u00a0transformer\u00a0change\u00a0voltage?<\/b><\/h1>\n

When an electric current flows through the primary coil of a transformer, it induces an alternating electromagnetic field. This electromagnetic field induces a current in the secondary coil, resulting in the formation of a voltage different from that in the primary coil. The reason for this voltage change lies in the difference in the number of turns between the primary and secondary coils. If the primary coil has more turns than the secondary coil, the voltage in the secondary coil will be lower than that in the primary coil, and this is known as a step-down transformer. Conversely, if the primary coil has fewer turns than the secondary coil, the voltage in the secondary coil will be higher than that in the primary coil, and this is called a step-up transformer. By adjusting the ratio of turns in the coils, transformers can achieve different voltage outputs to meet various power requirements. This technology is widely employed in the transmission and distribution of electrical energy.<\/p>\n

Contact<\/h2>\n

LuShan, heure de l'est. 1975, est un fabricant professionnel Chinois sp\u00e9cialis\u00e9 dans les transformateurs de puissance et des r\u00e9acteurs de plus de 50 ans. Les produits de pointe sont transformateur monophas\u00e9, triphas\u00e9 transformateurs d'isolement, transformateur \u00e9lectrique, transformateur de distribution, l'\u00e9tape vers le bas et d'intensifier le transformateur de basse tension du transformateur, transformateur \u00e0 haute tension, contr\u00f4le de transformateur toro\u00efdal transformateur, transformateur R-core; inductances DC, AC r\u00e9acteurs, le filtrage du r\u00e9acteur, de ligne et de charge du r\u00e9acteur, des bobines, le filtrage du r\u00e9acteur, et interm\u00e9diaire, \u00e0 haute fr\u00e9quence produits<\/a>.<\/p>\n

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En savoir plus sur transformateur de puissance et le r\u00e9acteur: www.lstransformer.com<\/a>.<\/p>\n

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How does\u00a0a\u00a0transformer\u00a0change\u00a0voltage? When an electric current flows through the primary coil of a transformer, it induces an alternating electromagnetic field. This electromagnetic field induces a current in the secondary coil, resulting in the formation of a voltage different from that in the primary coil. The reason for this voltage change lies in the difference in […]<\/p>\n","protected":false},"author":3,"featured_media":4180,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[48],"tags":[],"class_list":["post-1310","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq"],"yoast_head":"\nHow does a transformer change voltage? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD<\/title>\n<meta name=\"description\" content=\"When an electric current flows through the primary coil of a transformer, it induces an alternating electromagnetic field. This electromagnetic field induces a current in the secondary coil, resulting in the formation of a voltage different from that in the primary coil. The reason for this voltage change lies in the difference in the number of turns between the primary and secondary coils. If the primary coil has more turns than the secondary coil, the voltage in the secondary coil will be lower than that in the primary coil, and this is known as a step-down transformer. Conversely, if the primary coil has fewer turns than the secondary coil, the voltage in the secondary coil will be higher than that in the primary coil, and this is called a step-up transformer. By adjusting the ratio of turns in the coils, transformers can achieve different voltage outputs to meet various power requirements. This technology is widely employed in the transmission and distribution of electrical energy.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lstransformer.com\/fr\/how-does-a-transformer-change-voltage\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How does a transformer change voltage? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD\" \/>\n<meta property=\"og:description\" content=\"When an electric current flows through the primary coil of a transformer, it induces an alternating electromagnetic field. This electromagnetic field induces a current in the secondary coil, resulting in the formation of a voltage different from that in the primary coil. The reason for this voltage change lies in the difference in the number of turns between the primary and secondary coils. If the primary coil has more turns than the secondary coil, the voltage in the secondary coil will be lower than that in the primary coil, and this is known as a step-down transformer. Conversely, if the primary coil has fewer turns than the secondary coil, the voltage in the secondary coil will be higher than that in the primary coil, and this is called a step-up transformer. By adjusting the ratio of turns in the coils, transformers can achieve different voltage outputs to meet various power requirements. 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This technology is widely employed in the transmission and distribution of electrical energy.","og_url":"https:\/\/www.lstransformer.com\/fr\/how-does-a-transformer-change-voltage\/","og_site_name":"LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD","article_published_time":"2026-07-22T05:33:10+00:00","article_modified_time":"2026-09-28T01:43:13+00:00","og_image":[{"width":370,"height":276,"url":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/1742019323217387.png","type":"image\/png"}],"author":"369703005","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"369703005","Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.lstransformer.com\/how-does-a-transformer-change-voltage\/#article","isPartOf":{"@id":"https:\/\/www.lstransformer.com\/how-does-a-transformer-change-voltage\/"},"author":{"name":"369703005","@id":"https:\/\/www.lstransformer.com\/#\/schema\/person\/674089c15f4857c19a997f886816d289"},"headline":"How does a transformer change voltage?","datePublished":"2026-07-22T05:33:10+00:00","dateModified":"2026-09-28T01:43:13+00:00","mainEntityOfPage":{"@id":"https:\/\/www.lstransformer.com\/how-does-a-transformer-change-voltage\/"},"wordCount":302,"commentCount":0,"publisher":{"@id":"https:\/\/www.lstransformer.com\/#organization"},"image":{"@id":"https:\/\/www.lstransformer.com\/how-does-a-transformer-change-voltage\/#primaryimage"},"thumbnailUrl":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/1742019323217387.png","articleSection":["FAQ"],"inLanguage":"fr-FR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.lstransformer.com\/how-does-a-transformer-change-voltage\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.lstransformer.com\/how-does-a-transformer-change-voltage\/","url":"https:\/\/www.lstransformer.com\/how-does-a-transformer-change-voltage\/","name":"How does a transformer change voltage? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD","isPartOf":{"@id":"https:\/\/www.lstransformer.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.lstransformer.com\/how-does-a-transformer-change-voltage\/#primaryimage"},"image":{"@id":"https:\/\/www.lstransformer.com\/how-does-a-transformer-change-voltage\/#primaryimage"},"thumbnailUrl":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/1742019323217387.png","datePublished":"2026-07-22T05:33:10+00:00","dateModified":"2026-09-28T01:43:13+00:00","description":"When an electric current flows through the primary coil of a transformer, it induces an alternating electromagnetic field. This electromagnetic field induces a current in the secondary coil, resulting in the formation of a voltage different from that in the primary coil. The reason for this voltage change lies in the difference in the number of turns between the primary and secondary coils. If the primary coil has more turns than the secondary coil, the voltage in the secondary coil will be lower than that in the primary coil, and this is known as a step-down transformer. Conversely, if the primary coil has fewer turns than the secondary coil, the voltage in the secondary coil will be higher than that in the primary coil, and this is called a step-up transformer. By adjusting the ratio of turns in the coils, transformers can achieve different voltage outputs to meet various power requirements. 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