{"id":6346,"date":"2021-03-30T22:54:48","date_gmt":"2021-03-30T22:54:48","guid":{"rendered":"https:\/\/ct1jqj.eu\/blog\/?p=6346"},"modified":"2021-03-30T22:54:48","modified_gmt":"2021-03-30T22:54:48","slug":"medicao-de-miliohm-pt-3","status":"publish","type":"post","link":"https:\/\/ct1jqj.eu\/?p=6346","title":{"rendered":"Medi\u00e7\u00e3o de miliohm (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=\"6346\" 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=\"6346\" 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;\">Depois de ter testado o circuito descrito na 2\u00aa parte, onde tive leituras perfeitas de corrente, quando o liguei no dia a seguir deixei de ter leituras. Troquei praticamente todos os componentes e continuei sem ter leituras. Podia ser do meu mult\u00edmetro do costume, mas utilizei outro e o problema manteve-se. Entretanto, descobri que algu\u00e9m fez um adaptador em 2004 e decidi tentar esse circuito, que descobri <a href=\"https:\/\/www.angelfire.com\/electronic\/funwithtubes\/low_res_meter.html\" target=\"_blank\" rel=\"noopener\">aqui<\/a>. Ap\u00f3s soldar uns quantos fios aos comutadores rotativos, m\u00e3os \u00e0 obra. As fontes de corrente n\u00e3o deram qualquer chatice a calibrar, mas depois de tentar calibrar o resto do circuito s\u00f3 consegui calibrar com sucesso uma tens\u00e3o negativa, ao tentar calibrar o ganho tinha valores muito dispares. Revi o circuito v\u00e1rias vezes e dado o adiantar da hora acabei por n\u00e3o mexer mais nele. Fotografia do prot\u00f3tipo:<\/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-6346 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=6343'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ct1jqj.eu\/wp-content\/uploads\/2021\/03\/photo_2021-03-31_12-50-23-1-150x150.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;\">Curiosamente este projecto parecia-me mais simples e interessante; e tinha\u00a0 a vantagem de ter uma escala extra (Fonte de 100mA) para medir valores entre 0 e 200m\u03a9. Mas nada est\u00e1 perdido, e quando conseguir, algo ir\u00e1 sair!<\/p>\n<p>73&#8217;s<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Depois de ter testado o circuito descrito na 2\u00aa parte, onde tive leituras perfeitas de corrente, quando o liguei no dia a seguir deixei de ter leituras. Troquei praticamente todos os componentes e continuei sem ter leituras. Podia ser do meu mult\u00edmetro do costume, mas utilizei outro e o problema manteve-se. Entretanto, descobri que algu\u00e9m [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6343,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,6,9],"tags":[164,231],"class_list":["post-6346","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronica","category-equipamento","category-ideias-para-projecto","tag-fonte-de-corrente","tag-miliohm"],"_links":{"self":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts\/6346","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=6346"}],"version-history":[{"count":0,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/posts\/6346\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=\/wp\/v2\/media\/6343"}],"wp:attachment":[{"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ct1jqj.eu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}