{"id":264,"date":"2023-03-29T18:45:30","date_gmt":"2023-03-29T16:45:30","guid":{"rendered":"https:\/\/www.bernique.fr\/IGS\/?p=264"},"modified":"2023-04-02T08:36:32","modified_gmt":"2023-04-02T06:36:32","slug":"hack-dun-voltmetre-chinois-a-leds","status":"publish","type":"post","link":"https:\/\/www.bernique.fr\/IGS\/hack-dun-voltmetre-chinois-a-leds\/","title":{"rendered":"Hack d&rsquo;un voltm\u00e8tre chinois \u00e0 leds"},"content":{"rendered":"\n<p>Pour \u00e9gayer et am\u00e9liorer mon bo\u00eetier de protection secteur qui me sert \u00e0 red\u00e9marrer en douceur des appareils anciens dont l&nbsp;\u2018\u00e9tat \u00e9lectrique peut \u00eatre dangereux pour l\u2019op\u00e9rateur, je voulais lui greffer un voltm\u00e8tre de sortie afin de savoir sous quelle tension j\u2019alimentais mes appareils en test.<\/p>\n\n\n\n<p>Apr\u00e8s quelques consultations sur le web, j\u2019ai jet\u00e9 mon d\u00e9volu sur un petit voltm\u00e8tre\/amp\u00e8rem\u00e8tre chinois \u00e0 leds achet\u00e9 pour quelques piastres d\u00e9mat\u00e9rialis\u00e9s (moins de 5\u20ac livr\u00e9&nbsp;!).<\/p>\n\n\n\n<p>Le syst\u00e8me s\u2019auto alimente sur la tension \u00e0 mesurer, ce qui est plut\u00f4t malin\u2026 mais aussi un gros d\u00e9faut qui me g\u00e8ne, car il ne fonctionne pas en dessous de 60VAC. Bien s\u00fbr, je veux descendre plus bas (sinon ce n\u2019est pas dr\u00f4le!)<\/p>\n\n\n\n<p>Ni une ni deux, je d\u00e9cide d\u2019op\u00e9rer le monstre dans l\u2019espoir encore incertain de trouver une solution afin de pouvoir effectuer des mesures au plus proche de 0 et jusqu\u2019\u00e0 240VAC.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/www.bernique.fr\/IGS\/wp-content\/uploads\/2023\/03\/P1070563.resized.jpg\" alt=\"\" class=\"wp-image-265\" srcset=\"https:\/\/www.bernique.fr\/IGS\/wp-content\/uploads\/2023\/03\/P1070563.resized.jpg 640w, https:\/\/www.bernique.fr\/IGS\/wp-content\/uploads\/2023\/03\/P1070563.resized-300x225.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">Voltm\u00e8tre en cours d&rsquo;op\u00e9ration!<\/figcaption><\/figure>\n\n\n\n<p>Le document de synth\u00e8se est disponible en <a href=\"https:\/\/www.bernique.fr\/IGS\/wp-content\/uploads\/2023\/04\/Hack_voltmetre_chinois_v1.1.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">PDF au bout de ce lien<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le syst\u00e8me s\u2019auto alimente sur la tension \u00e0 mesurer, ce qui est plut\u00f4t malin\u2026 mais aussi un gros d\u00e9faut qui me g\u00e8ne, car il ne fonctionne pas en dessous de 60VAC. Bien s\u00fbr, je veux descendre plus bas (sinon ce n\u2019est pas dr\u00f4le!)<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[4],"tags":[],"class_list":["post-264","post","type-post","status-publish","format-standard","hentry","category-electro-bidouilles"],"_links":{"self":[{"href":"https:\/\/www.bernique.fr\/IGS\/wp-json\/wp\/v2\/posts\/264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bernique.fr\/IGS\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bernique.fr\/IGS\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bernique.fr\/IGS\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bernique.fr\/IGS\/wp-json\/wp\/v2\/comments?post=264"}],"version-history":[{"count":3,"href":"https:\/\/www.bernique.fr\/IGS\/wp-json\/wp\/v2\/posts\/264\/revisions"}],"predecessor-version":[{"id":271,"href":"https:\/\/www.bernique.fr\/IGS\/wp-json\/wp\/v2\/posts\/264\/revisions\/271"}],"wp:attachment":[{"href":"https:\/\/www.bernique.fr\/IGS\/wp-json\/wp\/v2\/media?parent=264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bernique.fr\/IGS\/wp-json\/wp\/v2\/categories?post=264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bernique.fr\/IGS\/wp-json\/wp\/v2\/tags?post=264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}