{"id":1295,"date":"2020-03-28T17:57:55","date_gmt":"2020-03-28T16:57:55","guid":{"rendered":"http:\/\/www.ardpylab.fr\/?page_id=1295"},"modified":"2020-05-10T14:37:34","modified_gmt":"2020-05-10T12:37:34","slug":"condensateurs-et-dipoles-rc","status":"publish","type":"page","link":"https:\/\/www.ardpylab.fr\/?page_id=1295","title":{"rendered":"Condensateurs et dip\u00f4les RC"},"content":{"rendered":"\n<h2 style=\"text-align: center;\"><em>\u201d <span style=\"text-decoration: underline;\">Charge &amp; D\u00e9charge<\/span> \u201d<\/em><\/h2>\n\n\n\n<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<\/p>\n\n\n\n<h6><span style=\"color: #999999;\">(<em>Cliquez pour afficher la version PDF)<\/em><\/span><\/h6>\n\n\n\n<div class=\"wp-block-file\"><a href=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/circuit-rc.pdf\">Dip\u00f4les RC<\/a><a href=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/circuit-rc.pdf\" class=\"wp-block-file__button\" download>T\u00e9l\u00e9charger<\/a><\/div>\n\n\n\n<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<\/p>\n<p>&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"454\" height=\"86\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-133.png\" alt=\"\" class=\"wp-image-1299\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-133.png 454w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-133-300x57.png 300w\" sizes=\"auto, (max-width: 454px) 100vw, 454px\" \/><\/figure><\/div>\n\n\n\n<h4>&nbsp;<\/h4>\n<h4><span style=\"color: #3366ff;\"><strong><a id=\"anc1\"><\/a>. <u>Les condensateurs<\/u><\/strong><\/span><\/h4>\n<p>Un condensateur est un composant \u00e9lectronique capable de stocker de l&rsquo;\u00e9nergie sous la forme d&rsquo;un champ \u00e9lectrostatique. Il est constitu\u00e9 de 2 armatures s\u00e9par\u00e9es par un isolant, le \u201ddi\u00e9lectrique\u201d.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-136.png\" alt=\"\" class=\"wp-image-1300\" width=\"186\" height=\"138\"\/><\/figure><\/div>\n\n\n\n<p>Les dimensions des armatures (ou plaques) sont grandes devant l&rsquo;\u00e9paisseur de l&rsquo;isolant. Par commodit\u00e9, les films m\u00e9talliques et l&rsquo;isolant sont enroul\u00e9s ou juxtapos\u00e9s en plusieurs couches.<\/p>\n<p>Dans les sch\u00e9mas de circuits \u00e9lectriques, le condensateur est symbolis\u00e9 par&nbsp;:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"78\" height=\"54\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-137.png\" alt=\"\" class=\"wp-image-1301\"\/><\/figure><\/div>\n\n\n\n<p>Les condensateurs avec un di\u00e9lectrique chimique sont polaris\u00e9s.<br>Ils&nbsp;sont repr\u00e9sent\u00e9s par ce symbole&nbsp;:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"80\" height=\"55\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-138.png\" alt=\"\" class=\"wp-image-1302\"\/><\/figure><\/div>\n\n\n\n<p>Les condensateurs polaris\u00e9s poss\u00e8dent un p\u00f4le \u00ab\u00a0plus\u00a0\u00bb et un p\u00f4le \u00ab\u00a0moins\u00a0\u00bb, ils doivent imp\u00e9rativement \u00eatre connect\u00e9s dans le bon sens. En r\u00e8gle g\u00e9n\u00e9rale, les condensateurs polaris\u00e9s radiaux (qui ont les deux pattes du m\u00eame c\u00f4t\u00e9) poss\u00e8dent une bande ou un ensemble de fl\u00e8ches qui d\u00e9signe le p\u00f4le n\u00e9gatif, et les condensateurs polaris\u00e9s axiaux (qui ont les deux pattes oppos\u00e9es) poss\u00e8dent un renfoncement (collerette) c\u00f4t\u00e9 p\u00f4le positif&nbsp;:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"339\" height=\"216\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-139.png\" alt=\"\" class=\"wp-image-1303\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-139.png 339w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-139-300x191.png 300w\" sizes=\"auto, (max-width: 339px) 100vw, 339px\" \/><\/figure><\/div>\n\n\n\n<p><br>La caract\u00e9ristique principale d&rsquo;un condensateur est sa capacit\u00e9 exprim\u00e9e en <strong>farad.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"504\" height=\"152\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-140.png\" alt=\"\" class=\"wp-image-1305\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-140.png 504w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-140-300x90.png 300w\" sizes=\"auto, (max-width: 504px) 100vw, 504px\" \/><\/figure><\/div>\n\n\n\n<p><br>En appliquant, une tension U aux bornes d\u2019un condensateur, il apparait une charge q, sur une de ses plaques, proportionnelle \u00e0 la tension appliqu\u00e9e.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"207\" height=\"128\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-141.png\" alt=\"\" class=\"wp-image-1306\"\/><\/figure><\/div>\n\n\n\n<p>La charge qui appara\u00eet sur l&rsquo;une des plaques est l&rsquo;oppos\u00e9 de celle qui appara\u00eet sur l&rsquo;autre plaque.<br>En effet, la conservation de la charge \u00e9lectrique s&rsquo;\u00e9crit : <strong>q + q\u2019 = 0 <br><\/strong>d\u2019o\u00f9:&nbsp; <strong>q\u2019 = \u2212 q<\/strong>.<\/p>\n<p>La charge q est, par convention la charge port\u00e9e par la plaque par laquelle on entre dans le condensateur. On a alors&nbsp;:<\/p>\n<p style=\"padding-left: 40px;\"><strong>q = C.U<\/strong><\/p>\n<p>o\u00f9&nbsp;: q est exprim\u00e9 en coulomb (C), U en volt (V) et C en Farad (F)<\/p>\n<p><u>Remarque<\/u>&nbsp;: Le farad \u00e9tant une grande unit\u00e9, on utilise souvent des sous-multiples :<\/p>\n<p style=\"padding-left: 40px;\"><strong>1 \u00b5F = 10<sup>-6<\/sup> F, 1 nF = 10<sup>\u22129<\/sup> F, 1 pF = 10<sup>\u221212<\/sup> F<\/strong><br><br><\/p>\n<p>L&rsquo;intensit\u00e9 du courant, i, est le d\u00e9bit de charges et est \u00e9gale \u00e0 la quantit\u00e9 de charges qui passent par unit\u00e9 de temps \u00e0 travers une section de conducteur&nbsp;:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\" style=\"padding-left: 40px;\"><img loading=\"lazy\" decoding=\"async\" width=\"65\" height=\"53\" class=\"wp-image-1308\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-142.png\" alt=\"\"><\/figure>\n\n\n\n<p>On oriente g\u00e9om\u00e9triquement le condensateur de la borne A vers la borne B.<\/p>\n<p>Soit i<sub>AB<\/sub> l\u2019intensit\u00e9 alg\u00e9brique du courant allant de A vers B et qA la charge qui appara\u00eet sur la plaque par laquelle on entre dans le condensateur.<\/p>\n<p>On a donc : <strong>qA = \u2212 qB = C.(VA \u2212 VB)<\/strong><\/p>\n<p>En tenant compte de la relation entre i<sub>AB<\/sub> et qA, on a :<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\" style=\"padding-left: 40px;\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1309\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-143.png\" alt=\"\" width=\"344\" height=\"54\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-143.png 416w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-143-300x47.png 300w\" sizes=\"auto, (max-width: 344px) 100vw, 344px\" \/><\/figure>\n\n\n\n<p><br>On retiendra les relations suivantes&nbsp;:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\" style=\"padding-left: 40px;\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1312\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-144.png\" alt=\"\" width=\"442\" height=\"82\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-144.png 504w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-144-300x56.png 300w\" sizes=\"auto, (max-width: 442px) 100vw, 442px\" \/><\/figure>\n\n\n\n<h4>&nbsp;<\/h4>\n<h4><span style=\"color: #3366ff;\"><strong>. <u>Le dip\u00f4le RC<\/u><\/strong><\/span><\/h4>\n<p>Un dip\u00f4le RC est l\u2019association en s\u00e9rie d\u2019un conducteur ohmique (conducteur ohmique) de r\u00e9sistance R et d\u2019un condensateur de capacit\u00e9 C, comme dans le sch\u00e9ma ci-dessous&nbsp;:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"451\" height=\"208\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-145.png\" alt=\"\" class=\"wp-image-1314\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-145.png 451w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-145-300x138.png 300w\" sizes=\"auto, (max-width: 451px) 100vw, 451px\" \/><\/figure><\/div>\n\n\n\n<h4 style=\"padding-left: 40px;\"><strong><u><br><br><\/u><\/strong>1. <u><strong>Charge du condensateur<br><\/strong><\/u><\/h4>\n<p><br>Le condensateur \u00e9tant d\u00e9charg\u00e9, on bascule, \u00e0 l\u2019instant t=0, l&rsquo;interrupteur en position 1.<\/p>\n<p>A chaque instant t &gt; 0, on a :<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"437\" height=\"285\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-147.png\" alt=\"\" class=\"wp-image-1323\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-147.png 437w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-147-300x196.png 300w\" sizes=\"auto, (max-width: 437px) 100vw, 437px\" \/><\/figure>\n\n\n\n<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"140\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-146-1024x140.png\" alt=\"\" class=\"wp-image-1325\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-146-1024x140.png 1024w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-146-300x41.png 300w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-146-768x105.png 768w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-146.png 1270w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"354\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-148-1024x354.png\" alt=\"\" class=\"wp-image-1321\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-148-1024x354.png 1024w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-148-300x104.png 300w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-148-768x265.png 768w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-148.png 1338w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"525\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-150-1024x525.png\" alt=\"\" class=\"wp-image-1327\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-150-1024x525.png 1024w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-150-300x154.png 300w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-150-768x394.png 768w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-150.png 1298w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"610\" height=\"170\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-149.png\" alt=\"\" class=\"wp-image-1329\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-149.png 610w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-149-300x84.png 300w\" sizes=\"auto, (max-width: 610px) 100vw, 610px\" \/><\/figure>\n\n\n\n<h4><br><br><\/h4>\n<h4 style=\"padding-left: 40px;\">2. <u><\/u><strong><u>D\u00e9charge du condensateur dans une r\u00e9sistance<br><br><\/u><\/strong><\/h4>\n<p>Le condensateur \u00e9tant charg\u00e9, on bascule, \u00e0 l\u2019instant t=0, l&rsquo;interrupteur en position 2.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"718\" height=\"244\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-151.png\" alt=\"\" class=\"wp-image-1330\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-151.png 718w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-151-300x102.png 300w\" sizes=\"auto, (max-width: 718px) 100vw, 718px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"790\" height=\"282\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-152.png\" alt=\"\" class=\"wp-image-1331\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-152.png 790w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-152-300x107.png 300w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-152-768x274.png 768w\" sizes=\"auto, (max-width: 790px) 100vw, 790px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"744\" height=\"254\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-153.png\" alt=\"\" class=\"wp-image-1332\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-153.png 744w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-153-300x102.png 300w\" sizes=\"auto, (max-width: 744px) 100vw, 744px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"694\" height=\"128\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-154.png\" alt=\"\" class=\"wp-image-1333\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-154.png 694w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-154-300x55.png 300w\" sizes=\"auto, (max-width: 694px) 100vw, 694px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"570\" height=\"170\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-155.png\" alt=\"\" class=\"wp-image-1338\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-155.png 570w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-155-300x89.png 300w\" sizes=\"auto, (max-width: 570px) 100vw, 570px\" \/><\/figure>\n\n\n\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h4 style=\"padding-left: 40px;\">3. <u><strong>Constante de temps du dip\u00f4le RC <br><br><\/strong><\/u><\/h4>\n<p>Le produit <strong>R.C<\/strong> est homog\u00e8ne \u00e0 un temps et est appel\u00e9 constante de temps \u03c4 du dip\u00f4le RC.<\/p>\n<p><strong>. Lors de la charge :<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\" style=\"padding-left: 40px;\"><img loading=\"lazy\" decoding=\"async\" width=\"184\" height=\"35\" class=\"wp-image-1340\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-156.png\" alt=\"\"><\/figure>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"456\" height=\"264\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-157.png\" alt=\"\" class=\"wp-image-1341\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-157.png 456w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-157-300x174.png 300w\" sizes=\"auto, (max-width: 456px) 100vw, 456px\" \/><\/figure><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"818\" height=\"148\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-158.png\" alt=\"\" class=\"wp-image-1343\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-158.png 818w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-158-300x54.png 300w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-158-768x139.png 768w\" sizes=\"auto, (max-width: 818px) 100vw, 818px\" \/><\/figure>\n\n\n\n<p><strong>Et :<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"267\" height=\"29\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-159.png\" alt=\"\" class=\"wp-image-1344\"\/><\/figure>\n\n\n\n<p><strong>Par lecture graphique de l\u2019abscisse du point de la courbe dont l\u2019ordonn\u00e9e est \u00e9gale \u00e0 0,63.E, on obtient la valeur de \u03c4.<\/strong><\/p>\n\n\n\n<p>&nbsp;<\/p>\n<p>. <strong>Lors de la d\u00e9charge :<\/strong><\/p>\n\n\n\n<p style=\"padding-left: 40px;\"><img loading=\"lazy\" decoding=\"async\" width=\"132\" height=\"33\" class=\"wp-image-1346\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-160.png\" alt=\"\"><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"485\" height=\"271\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-161.png\" alt=\"\" class=\"wp-image-1347\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-161.png 485w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-161-300x168.png 300w\" sizes=\"auto, (max-width: 485px) 100vw, 485px\" \/><\/figure><\/div>\n\n\n\n<p><strong>La tangente \u00e0 la courbe, \u00e0 t=0s, coupe l\u2019asymptote y=0 au point d\u2019abscisse t = \u03c4.<\/strong><\/p>\n<p><strong>En effet, la tangente \u00e0 la courbe repr\u00e9sentative de u<sub>c<\/sub>(t), \u00e0 t = 0 s, a pour \u00e9quation :<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\" style=\"padding-left: 40px;\"><img loading=\"lazy\" decoding=\"async\" width=\"353\" height=\"77\" class=\"wp-image-1349\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-162.png\" alt=\"\" srcset=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-162.png 353w, https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-162-300x65.png 300w\" sizes=\"auto, (max-width: 353px) 100vw, 353px\" \/><\/figure>\n\n\n\n<p><strong>Si t = \u03c4 = R.C , on a alors :&nbsp; y = 0<\/strong><\/p>\n<p><strong>On a&nbsp;\u00e9galement :<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\" style=\"padding-left: 40px;\"><img loading=\"lazy\" decoding=\"async\" width=\"202\" height=\"26\" class=\"wp-image-1350\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/image-163.png\" alt=\"\"><\/figure>\n\n\n\n<p><strong>Par lecture graphique de l\u2019abscisse du point de la courbe dont l\u2019ordonn\u00e9e est \u00e9gale \u00e0 0,37.E, on obtient la valeur de \u03c4.<\/strong><\/p>\n\n\n\n<h4>&nbsp;<\/h4>\n<h4><span style=\"color: #3366ff;\">. <span style=\"text-decoration: underline;\"><strong>Les activit\u00e9s<\/strong><\/span><\/span><\/h4>\n<ul>\n<li>Activit\u00e9 1: <a href=\"https:\/\/www.ardpylab.fr\/?page_id=1357\" data-wplink-url-error=\"true\"><strong><em>Etude de la charge d\u2019un condensateur d\u2019un dip\u00f4le RC<\/em><\/strong><\/a><\/li>\n<li>Activit\u00e9 2: <a href=\"https:\/\/www.ardpylab.fr\/?page_id=1397\" data-wplink-url-error=\"true\"><strong><em>Etude de la d\u00e9charge d\u2019un condensateur d\u2019un dip\u00f4le RC<\/em><\/strong><\/a><\/li>\n<li>Activit\u00e9 3: <a href=\"https:\/\/www.ardpylab.fr\/?page_id=1424\" data-wplink-url-error=\"true\"><strong><em>D\u00e9termination de la capacit\u00e9 d\u2019un condensateur par mesure d\u2019une constante de temps<\/em><\/strong><\/a><\/li>\n<li>Activit\u00e9 4: <a href=\"https:\/\/www.ardpylab.fr\/?page_id=1441\" data-wplink-url-error=\"true\"><strong><em>Simulation d\u2019un flash photographique<\/em><\/strong><\/a><\/li>\n<li>Activit\u00e9 5: <a href=\"https:\/\/www.ardpylab.fr\/?page_id=1499\" data-wplink-url-error=\"true\"><strong><em>R\u00e9aliser un flash p\u00e9riodique<\/em><\/strong><\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n\n\n<div  class=\"grids-section grids-is-stretch\" style=\"--_gs-gap-desktop:0px 0px;--_gs-m-desktop:0 0 0 0;--_gs-p-desktop:0 0 0 0;--_gs-bg-desktop:transparent none;--_gs-bg-xp-desktop:0px;--_gs-zi-desktop:auto;--_gs-d-desktop:block;--_gs-mw-desktop:calc(100% - 0 - 0);--_gs-gap-tablet:0px 0px;--_gs-m-tablet:0 0 0 0;--_gs-p-tablet:0 0 0 0;--_gs-bg-tablet:transparent none;--_gs-bg-xp-tablet:0px;--_gs-zi-tablet:auto;--_gs-d-tablet:block;--_gs-mw-tablet:calc(100% - 0 - 0);--_gs-gap-mobile:0px 0px;--_gs-m-mobile:0 0 0 0;--_gs-p-mobile:0 0 0 0;--_gs-bg-mobile:transparent none;--_gs-bg-xp-mobile:0px;--_gs-zi-mobile:auto;--_gs-d-mobile:block;--_gs-mw-mobile:calc(100% - 0 - 0);--_gs-columns:2;--_gs-rows:1\"><div class=\"grids-s-w_i\">\n<div class=\"grids-area\" style=\"--_ga-column:1\/2;--_ga-row:1\/2;--_ga-m-desktop:0 0 0 0;--_ga-p-desktop:0 0 0 0;--_ga-bg-desktop:transparent none;--_ga-zi-desktop:auto;--_ga-d-desktop:flex;--_ga-mw-desktop:calc(100% - 0 - 0);--_ga-m-tablet:0 0 0 0;--_ga-p-tablet:0 0 0 0;--_ga-bg-tablet:transparent none;--_ga-zi-tablet:auto;--_ga-d-tablet:flex;--_ga-mw-tablet:calc(100% - 0 - 0);--_ga-m-mobile:0 0 0 0;--_ga-p-mobile:0 0 0 0;--_ga-bg-mobile:transparent none;--_ga-zi-mobile:auto;--_ga-d-mobile:flex;--_ga-mw-mobile:calc(100% - 0 - 0)\">\n\n<div class=\"wp-block-image\"><figure class=\"alignleft size-large\"><a href=\"https:\/\/www.ardpylab.fr\/?page_id=1245\"><img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"28\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/moins.jpg\" alt=\"\" class=\"wp-image-107\"\/><\/a><\/figure><\/div>\n\n<\/div>\n\n<div class=\"grids-area\" style=\"--_ga-column:2\/3;--_ga-row:1\/2;--_ga-m-desktop:0 0 0 0;--_ga-p-desktop:0 0 0 0;--_ga-bg-desktop:transparent none;--_ga-zi-desktop:auto;--_ga-d-desktop:flex;--_ga-mw-desktop:calc(100% - 0 - 0);--_ga-m-tablet:0 0 0 0;--_ga-p-tablet:0 0 0 0;--_ga-bg-tablet:transparent none;--_ga-zi-tablet:auto;--_ga-d-tablet:flex;--_ga-mw-tablet:calc(100% - 0 - 0);--_ga-m-mobile:0 0 0 0;--_ga-p-mobile:0 0 0 0;--_ga-bg-mobile:transparent none;--_ga-zi-mobile:auto;--_ga-d-mobile:flex;--_ga-mw-mobile:calc(100% - 0 - 0)\">\n\n<div class=\"wp-block-image\"><figure class=\"alignright size-large\"><a href=\"https:\/\/www.ardpylab.fr\/?page_id=1357\"><img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"28\" src=\"https:\/\/www.ardpylab.fr\/wp-content\/uploads\/2020\/03\/plus.jpg\" alt=\"\" class=\"wp-image-106\"\/><\/a><\/figure><\/div>\n\n<\/div>\n<\/div><\/div>\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>\u201d Charge &amp; D\u00e9charge \u201d &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; (Cliquez pour afficher la version PDF) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; . Les condensateurs Un condensateur est un composant \u00e9lectronique capable de stocker de l&rsquo;\u00e9nergie sous la forme d&rsquo;un champ \u00e9lectrostatique. Il est constitu\u00e9 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1295","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/pages\/1295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1295"}],"version-history":[{"count":0,"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/pages\/1295\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}