{"id":221599,"date":"2011-05-08T22:00:00","date_gmt":"2011-05-08T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/commandes-de-led-eliminant-les-condensateurs-electrolytiques\/"},"modified":"2011-05-08T22:00:00","modified_gmt":"2011-05-08T22:00:00","slug":"commandes-de-led-eliminant-les-condensateurs-electrolytiques","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/commandes-de-led-eliminant-les-condensateurs-electrolytiques\/","title":{"rendered":"Commandes de LED \u00e9liminant les condensateurs \u00e9lectrolytiques"},"content":{"rendered":"<p>Potentiellement, la dur&eacute;e de vie des &eacute;clairages &agrave; LED est beaucoup plus longue que celle des ampoules incandescentes ou fluorescentes. Cependant, la topologie classique &agrave; deux &eacute;tages (facteur de puissance et convertisseur DC-DC haute tension), parfois choisie pour le remplacement des ampoules grand public, utilise un condensateur &eacute;lectrolytique de stockage entre les &eacute;tages. La long&eacute;vit&eacute; du syst&egrave;me est alors limit&eacute;e par la dur&eacute;e de vie du condensateur, qui a tendance &agrave; se dess&eacute;cher et &agrave; tomber en panne, en particulier lorsqu&rsquo;il est plac&eacute; dans un espace ferm&eacute; comme le bo&icirc;tier du ballast ou la base de l&rsquo;ampoule, et expos&eacute; &agrave; la chaleur dissip&eacute;e par une conversion inefficace &agrave; deux &eacute;tages et les LED haute luminosit&eacute; toutes proches. Efficace, pr&eacute;cise et &agrave; un seul &eacute;tage,&nbsp;la technologie de contr&ocirc;le c&ocirc;t&eacute; primaire des puces <a href=\"http:\/\/www.powerint.com\/en\/products\/linkswitch-family?AdSource=PRen\">LinkSwitch<\/a> de Power Integrations &eacute;limine le condensateur &eacute;lectrolytique et l&rsquo;optocoupleur, gu&egrave;re plus fiable, utilis&eacute;s dans les traditionnelles alimentations isol&eacute;es de type flyback. Les concepteurs utilisant les puces <a href=\"http:\/\/www.powerint.com\/en\/products\/linkswitch-family\/linkswitch-ph?AdSource=PRen\">LinkSwitch-PH<\/a> peuvent s&rsquo;attendre &agrave; ce que la dur&eacute;e de vie op&eacute;rationnelle de leur commande d&rsquo;&eacute;clairage SSL d&eacute;passe les 35000 heures exig&eacute;es par la sp&eacute;cification ENERGY STAR SLL (V1.1).<\/p>\n<p><a href=\"http:\/\/www.powerint.com\/linkswitch-ph\">www.powerint.com\/linkswitch-ph<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bas\u00e9 sur sa famille de circuits de commande de LED \u00e0 un \u00e9tage LinkSwitch-PH, \u00a0le design de r\u00e9f\u00e9rence DER-277 de Power Integrations \u00e9vite le recours aux condensateurs \u00e9lectrolytiques peu fiables et aux optocoupleurs, et convient particuli\u00e8rement aux applications d&rsquo;\u00e9clairage \u00e0 semiconducteurs (SSL) de haute fiabilit\u00e9 pour l&rsquo;industrie, le commercial et l&rsquo;ext\u00e9rieur. Destin\u00e9 aux produits de 5 \u00e0 55 W, les ballasts de commande d&rsquo;\u00e9clairage SSL \u00e0 puces LinkSwitch-PH atteignent plus de 90% de rendement et satisfont aux sp\u00e9cifications ENERGY STAR exigeant un facteur de puissance de plus de 0,9.<\/p>\n","protected":false},"author":22,"featured_media":221600,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-221599","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Commandes de LED \u00e9liminant les condensateurs \u00e9lectrolytiques ...<\/title>\n<meta name=\"description\" content=\"Bas\u00e9 sur sa famille de circuits de commande de LED \u00e0 un \u00e9tage LinkSwitch-PH, \u00a0le design de r\u00e9f\u00e9rence DER-277 de Power Integrations \u00e9vite le recours...\" \/>\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\/posts\/221599\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Commandes de LED \u00e9liminant les condensateurs \u00e9lectrolytiques\" \/>\n<meta property=\"og:description\" content=\"Bas\u00e9 sur sa famille de circuits de commande de LED \u00e0 un \u00e9tage LinkSwitch-PH, \u00a0le design de r\u00e9f\u00e9rence DER-277 de Power Integrations \u00e9vite le recours aux condensateurs \u00e9lectrolytiques peu fiables et aux optocoupleurs, et convient particuli\u00e8rement aux applications d&#039;\u00e9clairage \u00e0 semiconducteurs (SSL) de haute fiabilit\u00e9 pour l&#039;industrie, le commercial et l&#039;ext\u00e9rieur. Destin\u00e9 aux produits de 5 \u00e0 55 W, les ballasts de commande d&#039;\u00e9clairage SSL \u00e0 puces LinkSwitch-PH atteignent plus de 90% de rendement et satisfont aux sp\u00e9cifications ENERGY STAR exigeant un facteur de puissance de plus de 0,9.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/221599\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2011-05-08T22:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/import\/eci2064_power.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2100\" \/>\n\t<meta property=\"og:image:height\" content=\"1500\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"eeNews Europe\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" 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