{"id":2304,"date":"2023-03-10T14:40:04","date_gmt":"2023-03-10T13:40:04","guid":{"rendered":"https:\/\/mxth.dk\/?page_id=2304"},"modified":"2023-08-23T20:00:35","modified_gmt":"2023-08-23T18:00:35","slug":"f12-kobling-af-resistorer","status":"publish","type":"page","link":"https:\/\/mxth.dk\/?page_id=2304","title":{"rendered":"F12 &#8211; Kobling af resistorer"},"content":{"rendered":"\n<div class=\" wp-block-cover alignfull is-light eplus-wrapper\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1441\" class=\"wp-block-cover__image-background wp-image-2305\" alt=\"\" src=\"https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/harrison-broadbent-afZVP8xbbw0-unsplash-scaled.jpg?resize=2560%2C1441&#038;ssl=1\" data-object-fit=\"cover\" srcset=\"https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/harrison-broadbent-afZVP8xbbw0-unsplash-scaled.jpg?w=2560&amp;ssl=1 2560w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/harrison-broadbent-afZVP8xbbw0-unsplash-scaled.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/harrison-broadbent-afZVP8xbbw0-unsplash-scaled.jpg?resize=1024%2C576&amp;ssl=1 1024w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/harrison-broadbent-afZVP8xbbw0-unsplash-scaled.jpg?resize=768%2C432&amp;ssl=1 768w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/harrison-broadbent-afZVP8xbbw0-unsplash-scaled.jpg?resize=1536%2C864&amp;ssl=1 1536w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/harrison-broadbent-afZVP8xbbw0-unsplash-scaled.jpg?resize=2048%2C1152&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\"><p class=\" has-text-align-center has-background-color has-text-color has-large-font-size eplus-wrapper eplus-styles-uid-b588eb\">FORS\u00d8G<\/p>\n\n<p class=\" has-text-align-center has-background-color has-text-color eplus-wrapper eplus-styles-uid-2b8a92\">kobling og resistorer<\/p><\/div><\/div>\n\n\n<p class=\" has-text-align-right eplus-wrapper eplus-styles-uid-34e78c\">Photo by <a href=\"https:\/\/unsplash.com\/@harrisonbroadbent?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Harrison Broadbent<\/a> on <a href=\"https:\/\/unsplash.com\/photos\/afZVP8xbbw0?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText\">Unsplash<\/a><\/p>\n\n\n<p class=\" eplus-wrapper\">Med dette eksperiment vil vi ind\u00f8ve beregning af <em>erstatningsresistansen<\/em> ved forskellige resistorkoblinger.<\/p>\n\n\n\n<h5 class=\" wp-block-heading eplus-wrapper\">Apparatur<\/h5>\n\n\n<ul class=\"eplus-wrapper wp-block-list eplus-styles-uid-5d201e\">\n<li class=\" eplus-wrapper\">fire resistorer<\/li>\n\n\n\n<li class=\" eplus-wrapper\">et ohmmeter<\/li>\n\n\n\n<li class=\" eplus-wrapper\">jumper wires<\/li>\n\n\n\n<li class=\" eplus-wrapper\">breadboard<\/li>\n<\/ul>\n\n\n<h5 class=\" wp-block-heading eplus-wrapper\">Fremgangsm\u00e5de<\/h5>\n\n\n\n<p class=\" eplus-wrapper\">Med brug af <a rel=\"noreferrer noopener\" href=\"https:\/\/orbithtxb.systime.dk\/?id=554#c4885\" target=\"_blank\">farvekoderne<\/a> skal du f\u00f8rst bestemme den teoretiske resistans (R) for komponenten.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Du skal herefter selv indstille ohmmeteret s\u00e5 det kan m\u00e5le modstanden. Dern\u00e6st m\u00e5ler vi resistorerne A, B, C og D enkeltvis, og disse v\u00e6rdier er fra nu af udn\u00e6vnt til &#8220;tabelv\u00e6rdier&#8221;. Endelig beregner vi den \u00f8nskede kobling ud fra tabelv\u00e6rdierne, hvorefter vi m\u00e5ler den.<\/p>\n\n\n\n<figure class=\" wp-block-table eplus-wrapper\"><table><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\"><\/td><td class=\"has-text-align-center\" data-align=\"center\">A<\/td><td class=\"has-text-align-center\" data-align=\"center\">B<\/td><td class=\"has-text-align-center\" data-align=\"center\">C<\/td><td class=\"has-text-align-center\" data-align=\"center\">D<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">R (afl\u00e6st ud fra farvekoden)<\/td><td class=\"has-text-align-center\" data-align=\"center\">               <\/td><td class=\"has-text-align-center\" data-align=\"center\">               <\/td><td class=\"has-text-align-center\" data-align=\"center\">               <\/td><td class=\"has-text-align-center\" data-align=\"center\">               <\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Usikkerhed<\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">R (m\u00e5lt)<\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\" eplus-wrapper\">Usikkerheden for en modstand angives i 3. eller 4. ring. Ligger den m\u00e5lte v\u00e6rdi af modstanden indenfor intervallet?<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Husk at m\u00e6rke modstandene s\u00e5 du kan holde styr p\u00e5 dem n\u00e5r de skal bruges i et kredsl\u00f8b.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Vi skal afpr\u00f8ve f\u00f8lgende resistorkoblinger<\/p>\n\n\n\n<figure class=\" wp-block-image size-full eplus-wrapper\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"893\" height=\"498\" src=\"https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/Kredsl_b2-1.png?resize=893%2C498&#038;ssl=1\" alt=\"\" class=\"wp-image-2381\" srcset=\"https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/Kredsl_b2-1.png?w=893&amp;ssl=1 893w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/Kredsl_b2-1.png?resize=300%2C167&amp;ssl=1 300w, https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/Kredsl_b2-1.png?resize=768%2C428&amp;ssl=1 768w\" sizes=\"auto, (max-width: 893px) 100vw, 893px\" \/><\/figure>\n\n\n\n<p class=\" eplus-wrapper\">For hver opstilling beregnes og m\u00e5les erstatningsresistansen.<\/p>\n\n\n\n<div class=\"wp-block-kadence-accordion alignnone\"><div class=\"kt-accordion-wrap kt-accordion-id2304_be6ff4-19 kt-accordion-has-2-panes kt-active-pane-0 kt-accordion-block kt-pane-header-alignment-left kt-accodion-icon-style-basic kt-accodion-icon-side-right\" style=\"max-width:none\"><div class=\"kt-accordion-inner-wrap\" data-allow-multiple-open=\"false\" data-start-open=\"none\">\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-1 kt-pane2304_d1e4d5-58\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">Formler<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\">\n<p class=\" eplus-wrapper\">Vi har to formler for erstatningsresistancen an p\u00e5 om de er forbundet i serie- eller i parallelforbindelse.<\/p>\n\n\n\n<p class=\" eplus-wrapper\">For en seriekobling g\u00e6lder<\/p>\n\n\n\n<p class=\" has-text-align-center eplus-wrapper\">\\(R_{ers}=R_1+R_2+R_3+R_4\\)<\/p>\n\n\n\n<p class=\" eplus-wrapper\">For en parallelkobling g\u00e6lder<\/p>\n\n\n\n<p class=\" has-text-align-center eplus-wrapper\">\\(\\frac{1}{R_{ers}}=\\frac{1}{R_1}+\\frac{1}{R_2}+\\frac{1}{R_3}+\\frac{1}{R_4}\\)<\/p>\n<\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n\n<p class=\" eplus-wrapper\">Beregn de m\u00e5lte v\u00e6rdiers afvigelse fra den v\u00e6rdi, vi beregner ud fra koblingsformlerne, og angiv afvigelsen i procent. <em>Husk enheder i beregningerne!<\/em><\/p>\n\n\n\n<figure class=\" wp-block-table eplus-wrapper\"><table><tbody><tr><td><\/td><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><td class=\"has-text-align-center\" data-align=\"center\">3<\/td><td class=\"has-text-align-center\" data-align=\"center\">4<\/td><td class=\"has-text-align-center\" data-align=\"center\">5<\/td><\/tr><tr><td>R<sub>beregnet<\/sub><\/td><td class=\"has-text-align-center\" data-align=\"center\">          <\/td><td class=\"has-text-align-center\" data-align=\"center\">          <\/td><td class=\"has-text-align-center\" data-align=\"center\">          <\/td><td class=\"has-text-align-center\" data-align=\"center\">          <\/td><td class=\"has-text-align-center\" data-align=\"center\">          <\/td><\/tr><tr><td>R<sub>m\u00e5lt<\/sub><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><\/tr><tr><td>% afvigelse<\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\" eplus-wrapper\">Sammenlign afvigelsen med den usikkerhed der kan beregnes. Ligger den m\u00e5lte v\u00e6rdi inden for usikkerheden?<\/p>\n\n\n\n<p class=\" eplus-wrapper\">Der er mulighed for at hente et google sheet dokument til indtastning af data <a href=\"https:\/\/docs.google.com\/spreadsheets\/d\/1Yt3lzLzluG4krq0BFgE4nUhw4wjcJR2baprPDWQWe_k\/edit?usp=sharing\" target=\"_blank\" rel=\"noreferrer noopener\">her<\/a>.<\/p>\n\n\n\n<h5 class=\" wp-block-heading eplus-wrapper\">Credit where credits due<\/h5>\n\n\n\n<p class=\" eplus-wrapper\">Denne fors\u00f8gsprotokol er udarbejdet af Michael Stenner &#8211; Himmerlands Erhvervs- og Gymnasieuddannelser Hobro.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Med dette eksperiment vil vi ind\u00f8ve beregning af erstatningsresistansen ved forskellige resistorkoblinger.<\/p>\n","protected":false},"author":1,"featured_media":2305,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ub_ctt_via":"","editor_plus_copied_stylings":"{}","footnotes":""},"categories":[27,2],"tags":[],"class_list":["post-2304","page","type-page","status-publish","has-post-thumbnail","hentry","category-forsoeg","category-fysik"],"featured_image_src":"https:\/\/i0.wp.com\/mxth.dk\/wp-content\/uploads\/2023\/03\/harrison-broadbent-afZVP8xbbw0-unsplash-scaled.jpg?fit=2560%2C1441&ssl=1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages\/2304","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2304"}],"version-history":[{"count":15,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages\/2304\/revisions"}],"predecessor-version":[{"id":2844,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/pages\/2304\/revisions\/2844"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=\/wp\/v2\/media\/2305"}],"wp:attachment":[{"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mxth.dk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}