{"id":2789,"date":"2018-10-03T21:57:30","date_gmt":"2018-10-03T21:57:30","guid":{"rendered":"https:\/\/ct1jqj.eu\/?p=2789"},"modified":"2018-10-03T21:57:30","modified_gmt":"2018-10-03T21:57:30","slug":"amplificador-3w-3w-a-valvulas-pt-3","status":"publish","type":"post","link":"https:\/\/ct1jqj.eu\/?p=2789","title":{"rendered":"Amplificador 3w + 3W a v\u00e1lvulas (Pt.3)"},"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=\"2789\" 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=\"2789\" 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;\">E a saga continua! Como ainda estou \u00e0 espera que me cheguem os transformadores de sa\u00edda, n\u00e3o \u00e9 este fim\u2011de\u2011semana que o amplificador fica pronto, contudo j\u00e1 tive alguns progressos, uma vez que me chegaram as placas de rel\u00e9s para o temporizador, foram feitas alguns testes e correram bem! Usei para indica\u00e7\u00e3o visual um Led RGB ao inv\u00e9s do bicolor, e decidi usar as cores vermelho\/azul, ao inv\u00e9s de vermelho\/verde, como podem ver nas fotografias abaixo:<\/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-2789 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=4026'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/timer11_01-1-150x150.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=4027'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/timer11_02-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl>\n\t\t\t<br style='clear: both' \/>\n\t\t<\/div>\n\n<p style=\"text-align: justify;\">Para a fonte de alimenta\u00e7\u00e3o, decidi alimentar os filamentos com tens\u00e3o DC e a HV com fonte estabilizada, usando para o efeito um kit adquirido no Ebay, apesar de ainda n\u00e3o estar a 100%, como gostaria, j\u00e1 que devido \u00e0s\u00a0toler\u00e2ncias do pr\u00f3prio circuito, a tens\u00e3o de sa\u00edda do circuito HV que deveria rondar os 300 VDC n\u00e3o passa dos 287 VDC. Irei tentar ainda este fim\u2011de\u2011semana resolver esse problema, com a troca dos <em>d\u00edodos zener<\/em> que est\u00e3o no circuito de estabiliza\u00e7\u00e3o e ver se o problema fica resolvido. O indutor de 5H tamb\u00e9m j\u00e1 chegou e de facto, o seu valor real n\u00e3o foge muito do essencial, como poder\u00e3o ver nas fotografias mais abaixo:<\/p>\n\n\t\t<style>\n\t\t\t#gallery-2 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-2 .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-2 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-2 .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-2' class='gallery galleryid-2789 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=4028'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/IMG_2427-1-rotated-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/IMG_2427-1-rotated-1-150x150.jpg 150w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/IMG_2427-1-rotated-1-300x300.jpg 300w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/IMG_2427-1-rotated-1-768x768.jpg 768w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/IMG_2427-1-rotated-1.jpg 1024w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/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=4029'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/IMG_2429-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/IMG_2429-1-150x150.jpg 150w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/IMG_2429-1-300x300.jpg 300w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/IMG_2429-1-768x768.jpg 768w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/IMG_2429-1.jpg 1024w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt><\/dl>\n\t\t\t<br style='clear: both' \/>\n\t\t<\/div>\n\n<p style=\"text-align: justify;\">Ah, claro, e n\u00e3o poderiam faltar as fotografias da placa da fonte de alimenta\u00e7\u00e3o, muito bem desenhada por acaso, e do amplificador em si. E com isto, espero na pt. 4 deste artigo, ter o amplificador todo montado e a funcionar, ainda que sem a caixa, visto que essa ainda se encontra em estudo.<\/p>\n\n\t\t<style>\n\t\t\t#gallery-3 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-3 .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-3 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-3 .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-3' class='gallery galleryid-2789 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=4030'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/supply-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/supply-1-150x150.jpg 150w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/supply-1-300x300.jpg 300w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/supply-1-768x768.jpg 768w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/supply-1.jpg 1024w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/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=4031'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/tubeamp-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/tubeamp-1-150x150.jpg 150w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/tubeamp-1-300x300.jpg 300w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/tubeamp-1-768x768.jpg 768w, https:\/\/ct1jqj.eu\/wp-content\/uploads\/2018\/10\/tubeamp-1.jpg 1024w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt><\/dl>\n\t\t\t<br style='clear: both' \/>\n\t\t<\/div>\n\n<p>73&#8217;s<\/p>\n","protected":false},"excerpt":{"rendered":"<p>E a saga continua! Como ainda estou \u00e0 espera que me cheguem os transformadores de sa\u00edda, n\u00e3o \u00e9 este fim\u2011de\u2011semana que o amplificador fica pronto, contudo j\u00e1 tive alguns progressos, uma vez que me chegaram as placas de rel\u00e9s para o temporizador, foram feitas alguns testes e correram bem! Usei para indica\u00e7\u00e3o visual um Led [&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],"tags":[87,88,163,323],"class_list":["post-2789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-audio","category-electronica","tag-attiny85","tag-audio","tag-fonte-de-alimentacao","tag-valvulas"],"_links":{"self":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts\/2789","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=2789"}],"version-history":[{"count":0,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts\/2789\/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=2789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}