{"id":352,"date":"2010-08-22T11:36:58","date_gmt":"2010-08-22T09:36:58","guid":{"rendered":"http:\/\/www.geii.iut-nimes.fr\/fg\/?p=352"},"modified":"2016-06-30T18:22:57","modified_gmt":"2016-06-30T16:22:57","slug":"alimentation-stabilisee-a-lm723","status":"publish","type":"post","link":"http:\/\/www.giamarchi.fr\/?p=352","title":{"rendered":"Alimentation Stabilis\u00e9e \u00e0 LM723"},"content":{"rendered":"<p><a href=\"http:\/\/perso.iut-nimes.fr\/fgiamarchi\/wp-content\/uploads\/2010\/08\/Alim_723_2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-355\" src=\"http:\/\/perso.iut-nimes.fr\/fgiamarchi\/wp-content\/uploads\/2010\/08\/Alim_723_2-300x255.jpg\" alt=\"Alim_723_2\" width=\"300\" height=\"255\" srcset=\"http:\/\/www.giamarchi.fr\/wp-content\/uploads\/2010\/08\/Alim_723_2-300x255.jpg 300w, http:\/\/www.giamarchi.fr\/wp-content\/uploads\/2010\/08\/Alim_723_2-1023x871.jpg 1023w, http:\/\/www.giamarchi.fr\/wp-content\/uploads\/2010\/08\/Alim_723_2.jpg 1594w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Ce montage est indispensable dans tout bon labo qui se respecte.\u00a0 C&rsquo;est l&rsquo;\u00e9l\u00e9ment de base pour pr\u00e9tendre travailler correctement. Cette alimentation est r\u00e9glable en tension et en courant.<\/p>\n<p>L&rsquo;\u00e9l\u00e9ment central est un LM723; c&rsquo;est une r\u00e9f\u00e9rence en la mati\u00e8re et un gage de stabilit\u00e9 et de qualit\u00e9. Ce composant, vieux de plus de 30 ans, est encore utilis\u00e9 dans la plupart des alimentations stabilis\u00e9es commercialis\u00e9es.<\/p>\n<p>Le montage propos\u00e9 permet de disposer d&rsquo;une tension r\u00e9glable de 2 \u00e0 30 Volts et d&rsquo;un courant de 0 \u00e0 2 Amp\u00e8res. Le fait de poss\u00e9der une limitation variable en courant est un vrai plus pour tester des montages nouveaux, dont on est pas sur de l&rsquo;absence de court-circuits.<\/p>\n<p>Le transistor ballast est un classique 2N3055 mont\u00e9 sur un radiateur s\u00e9par\u00e9, il est associ\u00e9 \u00e0 un driver BD437 bien sup\u00e9rieur au 2N1711 des premiers montages. Ce radiateur pourra \u00eatre fix\u00e9 \u00e0 l&rsquo;ext\u00e9rieur du boitier. A cela, il faut ajouter un transformateur 220\/28 max. Il ne faut pas d\u00e9passer 28 Volts en entr\u00e9e du montage. Car le LM723 n&rsquo;est plus op\u00e9rationnel au dessus de 40 Volts (28 x 1,41).<\/p>\n<p>Cliquez ici pour t\u00e9l\u00e9charger le pdf : <a href=\"http:\/\/perso.iut-nimes.fr\/fgiamarchi\/wp-content\/uploads\/2015\/10\/Alim_723_01.pdf\">Alim 723.pdf<\/a><\/p>\n<p>Site de <a href=\"http:\/\/www.ti.com\/lit\/ds\/symlink\/lm723.pdf\" target=\"_blank\">Texas Instruments<\/a> et le data sheet du LM723<\/p>\n<p>Cet article a \u00e9t\u00e9 mise \u00e0 jour, suivre <a href=\"http:\/\/perso.iut-nimes.fr\/fgiamarchi\/?p=3683\">ce lien<\/a><\/p>\n<p>Le circuit imprim\u00e9 de la nouvelle version est disponible, pour l&rsquo;obtenir contactez moi. C&rsquo;est un circuit double face, trous m\u00e9tallis\u00e9s et s\u00e9rigraphi\u00e9.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ce montage est indispensable dans tout bon labo qui se respecte.\u00a0 C&rsquo;est l&rsquo;\u00e9l\u00e9ment de base pour pr\u00e9tendre travailler correctement. Cette alimentation est r\u00e9glable en tension et en courant. L&rsquo;\u00e9l\u00e9ment central est un LM723; c&rsquo;est une r\u00e9f\u00e9rence en la mati\u00e8re et &hellip; <a href=\"http:\/\/www.giamarchi.fr\/?p=352\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[47,45,17,61,46],"class_list":["post-352","post","type-post","status-publish","format-standard","hentry","category-publications","tag-47","tag-alimentation","tag-bridge","tag-electronique","tag-lm723"],"_links":{"self":[{"href":"http:\/\/www.giamarchi.fr\/index.php?rest_route=\/wp\/v2\/posts\/352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.giamarchi.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.giamarchi.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.giamarchi.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.giamarchi.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=352"}],"version-history":[{"count":30,"href":"http:\/\/www.giamarchi.fr\/index.php?rest_route=\/wp\/v2\/posts\/352\/revisions"}],"predecessor-version":[{"id":4017,"href":"http:\/\/www.giamarchi.fr\/index.php?rest_route=\/wp\/v2\/posts\/352\/revisions\/4017"}],"wp:attachment":[{"href":"http:\/\/www.giamarchi.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.giamarchi.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=352"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.giamarchi.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}