{"id":5544,"date":"2020-11-08T19:18:26","date_gmt":"2020-11-08T19:18:26","guid":{"rendered":"https:\/\/ct1jqj.eu\/blog\/?p=5544"},"modified":"2020-11-08T19:18:26","modified_gmt":"2020-11-08T19:18:26","slug":"amplificador-classe-d-com-tda7492-pt-1","status":"publish","type":"post","link":"https:\/\/ct1jqj.eu\/?p=5544","title":{"rendered":"Amplificador classe D com TDA7492 (Pt. 1)"},"content":{"rendered":"<div class=\"pld-like-dislike-wrap pld-template-4\">\r\n    <div class=\"pld-like-wrap  pld-common-wrap\">\r\n    <a href=\"javascript:void(0)\" class=\"pld-like-trigger pld-like-dislike-trigger  \" title=\"\" data-post-id=\"5544\" data-trigger-type=\"like\" data-restriction=\"cookie\" data-already-liked=\"0\">\r\n                        <i class=\"far fa-smile\"><\/i>\r\n                    <\/a>\r\n    <span class=\"pld-like-count-wrap pld-count-wrap\">    <\/span>\r\n<\/div><div class=\"pld-dislike-wrap  pld-common-wrap\">\r\n    <a href=\"javascript:void(0)\" class=\"pld-dislike-trigger pld-like-dislike-trigger  \" title=\"\" data-post-id=\"5544\" data-trigger-type=\"dislike\" data-restriction=\"cookie\" data-already-liked=\"0\">\r\n                        <i class=\"far fa-frown\"><\/i>\r\n                    <\/a>\r\n    <span class=\"pld-dislike-count-wrap pld-count-wrap\"><\/span>\r\n<\/div><\/div><p style=\"text-align: justify;\">Hoje decidi efectuar medi\u00e7\u00f5es ao m\u00f3dulo amplificador que j\u00e1 me tinha chegado h\u00e1 algum tempo, baseado no integrado TDA7492. Este amplificador classe D, segundo o vendedor tem a pot\u00eancia de sa\u00edda de 2x50W, como transcrito a seguir:<\/p>\n<blockquote><p><b>Specification:<\/b><\/p>\n<p>Power supply: Single-voltage 10-26V DC.<br \/>\nMaximum power: 2x50W \/ 8 Ohms ;Mono BTL power: 100W \/ 4 Ohms .<\/p><\/blockquote>\n<p style=\"text-align: justify;\">Medi\u00e7\u00e3o efectuada com alimenta\u00e7\u00e3o de 15Vdc, e uma carga de 8\u03a9, utilizando um sinal sinusoidal de 400mV e 1Khz, obtive na sa\u00edda \u00b19V~. O que traduzindo, d\u00e1 uma pot\u00eancia de cerca de 11W. Ou seja longe do que est\u00e1 referido no an\u00fancio, mas para j\u00e1 n\u00e3o tenho hip\u00f3tese de testar com uma fonte capaz de fornecer mais tens\u00e3o\/corrente de sa\u00edda. E claro, fotografias do conjunto montado na bancada e detalhes do amplificador e da resist\u00eancia de carga:<\/p>\n\n\t\t<style>\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 33%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-5544 gallery-columns-3 gallery-size-thumbnail'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/ct1jqj.eu\/?attachment_id=5549'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2020\/11\/ampli-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/ct1jqj.eu\/?attachment_id=5551'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2020\/11\/ampli3-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/ct1jqj.eu\/?attachment_id=5550'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2020\/11\/ampli2-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p style=\"text-align: justify;\">Quando tiver hip\u00f3teses de efectuar novos testes, sair\u00e1 a parte 2 deste artigo. Fiquem em casa e seguros!<\/p>\n<p>73&#8217;s<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hoje decidi efectuar medi\u00e7\u00f5es ao m\u00f3dulo amplificador que j\u00e1 me tinha chegado h\u00e1 algum tempo, baseado no integrado TDA7492. Este amplificador classe D, segundo o vendedor tem a pot\u00eancia de sa\u00edda de 2x50W, como transcrito a seguir: Specification: Power supply: Single-voltage 10-26V DC. Maximum power: 2x50W \/ 8 Ohms ;Mono BTL power: 100W \/ 4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4346,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,5,6],"tags":[300],"class_list":["post-5544","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-audio","category-electronica","category-equipamento","tag-tda7492"],"_links":{"self":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts\/5544","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5544"}],"version-history":[{"count":0,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts\/5544\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/media\/4346"}],"wp:attachment":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}