{"id":5473,"date":"2020-10-05T00:00:26","date_gmt":"2020-10-05T00:00:26","guid":{"rendered":"https:\/\/ct1jqj.eu\/blog\/?p=5473"},"modified":"2020-10-05T00:00:26","modified_gmt":"2020-10-05T00:00:26","slug":"mais-um-ideia","status":"publish","type":"post","link":"https:\/\/ct1jqj.eu\/?p=5473","title":{"rendered":"Mais uma ideia&#8230;"},"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=\"5473\" 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\">2    <\/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=\"5473\" 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;\">Ou parte 2 de uma ideia antiga.\u00a0<a href=\"http:\/\/192.168.40.100\/?p=4819\" target=\"_blank\" rel=\"noopener noreferrer\">Neste<\/a>\u00a0artigo, que j\u00e1 tem mais de um ano, surgiu a ideia de usar uma caixa de resist\u00eancias com diversos valores, para poder testar baluns e eventualmente para servir de carga para testar sintonizadores de antena. Pois bem, decidi pegar no circuito e elaborar um novo esbo\u00e7o no <a href=\"https:\/\/diptrace.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">DipTrace<\/a>, cuja imagem mostro em seguida:<\/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-5473 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=5478'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2020\/10\/0A4DB829-8D66-4528-9224-04F84C805D59-1-150x150.jpeg\" 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;\">Entretanto fiz um pequeno upgrade do circuito original e decidi incluir mais 3 valores, neste caso 2.5:1 (125\u03a9), 12:1 (600\u03a9) e 49:1 (endfed, 2450\u03a9). A seguir apresento a tabela com os valores da s\u00e9rie E12 e E24 necess\u00e1rios para que os valores sejam os correctos:<\/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-5473 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=5479'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2020\/10\/3BE69FAB-BEF3-4035-A7DF-855B81BEFD8B-1-150x150.png\" 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;\">Obviamente que este circuito pode ser adaptado consoante as necessidades, e se n\u00e3o forem necess\u00e1rias todos os valores, podem ser apenas utilizados os que se pretendem sem preju\u00edzo do circuito. Para quem quiser utilizar este circuito para testar um sintonizador de antena, recomendo utilizar pot\u00eancias baixas (\u22645W) e resist\u00eancias de 5W ou combina\u00e7\u00f5es em paralelo para maior dissipa\u00e7\u00e3o. Se poss\u00edvel n\u00e3o utilizar rela\u00e7\u00f5es superiores a 16:1 (800\u03a9) sob pena de alguns sintonizadores de antena n\u00e3o conseguirem efectuar a sintonia e haver risco de estragar o r\u00e1dio\/sintonizador de antena. (O meu LDG sintoniza entre 6\u03a9 a 1K, como tal baseio-me nele) Tenho em mente outro projecto de carga vari\u00e1vel, baseado num equipamento comercial, mas isso ficar\u00e1 para uma pr\u00f3xima.<\/p>\n<p>73\u2019s<\/p>\n","protected":false},"excerpt":{"rendered":"<p>2 Ou parte 2 de uma ideia antiga.\u00a0Neste\u00a0artigo, que j\u00e1 tem mais de um ano, surgiu a ideia de usar uma caixa de resist\u00eancias com diversos valores, para poder testar baluns e eventualmente para servir de carga para testar sintonizadores de antena. Pois bem, decidi pegar no circuito e elaborar um novo esbo\u00e7o no DipTrace, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4346,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,9],"tags":[],"class_list":["post-5473","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-antenas","category-ideias-para-projecto"],"_links":{"self":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts\/5473","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=5473"}],"version-history":[{"count":0,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts\/5473\/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=5473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}