{"id":23009,"date":"2016-04-08T07:00:03","date_gmt":"2016-04-08T07:00:03","guid":{"rendered":"https:\/\/\/white_papers\/convertir-un-signal-de-1v-a-5v-en-sortie-de-4ma-a-20ma\/"},"modified":"2022-01-26T15:13:33","modified_gmt":"2022-01-26T15:13:33","slug":"convertir-un-signal-de-1v-a-5v-en-sortie-de-4ma-a-20ma","status":"publish","type":"white_papers","link":"https:\/\/www.ecinews.fr\/fr\/white_papers\/convertir-un-signal-de-1v-a-5v-en-sortie-de-4ma-a-20ma\/","title":{"rendered":"Convertir un signal de 1V \u00e0 5V en sortie de 4mA \u00e0 20mA"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>Bien que la disparition de la boucle de courant 4-20mA ait \u00e9t\u00e9 pr\u00e9dite depuis longtemps, cette interface analogique est encore la m\u00e9thode la plus r\u00e9pandue pour connecter des sources \u00e0 boucle de courant \u00e0 un circuit de d\u00e9tection. Cette interface n\u00e9cessite la conversion d\u2019un signal de tension, typiquement de 1V \u00e0 5V, en une sortie de 4mA \u00e0 20mA. Des exigences de pr\u00e9cision strictes imposent l\u2019utilisation de r\u00e9sistances de pr\u00e9cision co\u00fbteuses ou d\u2019un potentiom\u00e8tre r\u00e9glable pour calibrer l\u2019erreur de d\u00e9part de dispositifs moins pr\u00e9cis afin de satisfaire aux objectifs de la conception. Il n\u2019existe aucune technique optimale pour l\u2019environnement de production d\u2019aujourd\u2019hui, bas\u00e9 sur du mat\u00e9riel de test automatique mont\u00e9 en surface. Il est difficile de trouver des r\u00e9sistances de pr\u00e9cision dans les ensembles mont\u00e9s en surface, et les potentiom\u00e8tres r\u00e9glables n\u00e9cessitent une intervention humaine, incompatible avec les objectifs de production. <\/p>\n","protected":false},"featured_media":23011,"template":"","tags":[],"company":[362],"wp_category":[921],"ppma_author":[],"class_list":["post-23009","white_papers","type-white_papers","status-publish","has-post-thumbnail","hentry","company-linear-technology-corp","wp_category-analog"],"acf":[],"yoast_head":"<title>Convertir un signal de 1V \u00e0 5V en sortie de 4mA \u00e0 20mA ...<\/title>\n<meta name=\"description\" content=\"Bien que la disparition de la boucle de courant 4-20mA ait \u00e9t\u00e9 pr\u00e9dite depuis longtemps, cette interface analogique est encore la m\u00e9thode la plus...\" \/>\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.ecinews.fr\/fr\/wp-json\/wp\/v2\/white_papers\/23009\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Convertir un signal de 1V \u00e0 5V en sortie de 4mA \u00e0 20mA\" \/>\n<meta property=\"og:description\" content=\"Bien que la disparition de la boucle de courant 4-20mA ait \u00e9t\u00e9 pr\u00e9dite depuis longtemps, cette interface analogique est encore la m\u00e9thode la plus r\u00e9pandue pour connecter des sources \u00e0 boucle de courant \u00e0 un circuit de d\u00e9tection. Cette interface n\u00e9cessite la conversion d\u2019un signal de tension, typiquement de 1V \u00e0 5V, en une sortie de 4mA \u00e0 20mA. Des exigences de pr\u00e9cision strictes imposent l\u2019utilisation de r\u00e9sistances de pr\u00e9cision co\u00fbteuses ou d\u2019un potentiom\u00e8tre r\u00e9glable pour calibrer l\u2019erreur de d\u00e9part de dispositifs moins pr\u00e9cis afin de satisfaire aux objectifs de la conception. Il n\u2019existe aucune technique optimale pour l\u2019environnement de production d\u2019aujourd\u2019hui, bas\u00e9 sur du mat\u00e9riel de test automatique mont\u00e9 en surface. 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