{"id":13321,"date":"2023-08-01T04:03:50","date_gmt":"2023-08-01T04:03:50","guid":{"rendered":"https:\/\/www.rayzeek.com\/?p=13321"},"modified":"2023-12-26T08:37:52","modified_gmt":"2023-12-26T08:37:52","slug":"what-is-direct-current-dc","status":"publish","type":"post","link":"https:\/\/www.rayzeek.com\/da\/ordliste\/hvad-er-jaevnstrom-dc","title":{"rendered":"Hvad er j\u00e6vnstr\u00f8m (DC)"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-what-is-direct-current-dc\">Hvad er j\u00e6vnstr\u00f8m (DC)<\/h2><p>J\u00e6vnstr\u00f8m (DC) er en type elektrisk str\u00f8m, der flyder i en enkelt retning uden at \u00e6ndre polaritet. I mods\u00e6tning til vekselstr\u00f8m (AC), som periodisk \u00e6ndrer retning, leverer DC en konstant sp\u00e6nding eller str\u00f8m. Den kan opn\u00e5s fra forskellige kilder s\u00e5som batterier, solceller, br\u00e6ndselsceller og modificerede generatorer. DC-str\u00f8m er kendt for sin konsistens i sp\u00e6ndingslevering, hvilket g\u00f8r den til et foretrukket valg for mange elektroniske enheder. Disse enheder er ofte afh\u00e6ngige af DC-str\u00f8mkilder som batterier.<\/p><div class=\"insert_portfolio_outer_wrapper\"><h3>Bliv inspireret af Rayzeek bev\u00e6gelsessensorportef\u00f8ljer.<\/h3><p>Finder du ikke det, du \u00f8nsker? Bare rolig. Der er altid alternative m\u00e5der at l\u00f8se dine problemer p\u00e5. M\u00e5ske kan en af vores portef\u00f8ljer hj\u00e6lpe.<\/p><div class = \"insert_portfolio_buttons\"><div class = \"insert_portfolio_button_wrapper\"><div><a href = \"https:\/\/www.rayzeek.com\/da\/product-category\/bevaegelsessensorer\"><p>PIR-bev\u00e6gelsessensorer<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/da\/bevaegelsessensorafbrydere\"><p>Bev\u00e6gelsessensorafbrydere<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/da\/occupancy-vacancy-sensors\"><p>Tilstedev\u00e6relsessensorer<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/da\/produkter\/rz050\"><p>Bev\u00e6gelsessensor til klimaanl\u00e6g<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/da\/product-category\/motion-sensor-light-strip\"><p>Bev\u00e6gelsessensor-lyslister<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/da\/product-category\/dc-sensor-lysdaemper\"><p>Lavsp\u00e6ndings DC-bev\u00e6gelsessensorer\/d\u00e6mpere<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/da\/product-category\/tradlose-bevaegelsessensorer\"><p>Tr\u00e5dl\u00f8se bev\u00e6gelsessensors\u00e6t<\/p><\/a><\/div><\/div><\/div><\/div><p>DC-str\u00f8m kan ogs\u00e5 skabes fra AC-str\u00f8m ved hj\u00e6lp af en ensretter, som konverterer AC til DC. Denne konverteringsproces giver elektroniske enheder mulighed for at konvertere den AC-str\u00f8m, der er tilg\u00e6ngelig fra stikkontakter, til den DC-str\u00f8m, de kr\u00e6ver. Derudover kan en transformer bruges til at justere sp\u00e6ndingsniveauet for DC-str\u00f8mmen, s\u00e5 det matcher enhedens krav. Ikke alle elektriske enheder bruger DC-str\u00f8m. Mange husholdningsapparater, s\u00e5som lamper, vaskemaskiner og k\u00f8leskabe, fungerer p\u00e5 AC-str\u00f8m, der leveres direkte fra elnettet.<\/p><div class=\"wp-block-group glossary_faqs\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\">Ofte stillede sp\u00f8rgsm\u00e5l<\/h2>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-can-you-run-a-house-on-dc-power\">Kan du drive et hus p\u00e5 DC-str\u00f8m<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Grunden til, at DC-str\u00f8m ikke almindeligvis bruges i boliger, kan spores tilbage til de iboende egenskaber og begr\u00e6nsninger ved j\u00e6vnstr\u00f8m sammenlignet med vekselstr\u00f8m (AC). AC-str\u00f8mme har derimod den fordel, at de let kan transmitteres over lange afstande med minimalt tab. Derudover anses de for at v\u00e6re sikrere at r\u00f8re direkte ved samme sp\u00e6nding.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-why-dc-current-is-not-used-in-homes\">Hvorfor DC-str\u00f8m ikke bruges i hjem<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>DC-str\u00f8m bruges ikke almindeligvis i hjem af flere \u00e5rsager. For det f\u00f8rste er det udfordrende at generere DC-str\u00f8m, da den prim\u00e6rt produceres af batterier og elektrokemiske eller fotovoltaiske celler. Derudover oplever j\u00e6vnstr\u00f8m h\u00f8jere effekttab under transmission sammenlignet med vekselstr\u00f8m.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-happens-when-an-led-is-directly-connected-to-a-power-supply\">Hvad sker der, n\u00e5r en LED er direkte forbundet til en str\u00f8mforsyning<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Hvis en LED er forbundet direkte til en str\u00f8mforsyning, vil den fors\u00f8ge at sprede den maksimale m\u00e6ngde str\u00f8m, den har tilladelse til at tr\u00e6kke. Dette kan dog f\u00f8re til dens egen \u00f8del\u00e6ggelse. Derfor er det afg\u00f8rende at regulere og begr\u00e6nse str\u00f8mmen, der l\u00f8ber gennem LED'en.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-can-leds-work-on-both-ac-and-dc\">Kan LED'er fungere p\u00e5 b\u00e5de AC og DC<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>LED-lys har evnen til at fungere med b\u00e5de AC- og DC-str\u00f8mkilder. Faktisk fungerer LED-lys ved at konvertere AC-sp\u00e6nding til regulerede DC-sp\u00e6ndinger. Det er vigtigt at bem\u00e6rke, at hver enkelt LED, der er en diode, kan fungere med b\u00e5de AC og DC inden for dens designgr\u00e6nser, s\u00e5 l\u00e6nge der er en seriestr\u00f8mbegr\u00e6nsende modstand p\u00e5 plads.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-will-a-bulb-glow-in-dc-current\">Vil en p\u00e6re lyse i DC-str\u00f8m<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>N\u00e5r en p\u00e6re og en kondensator er forbundet i serie til en DC-str\u00f8m, vil p\u00e6ren slet ikke lyse. Dette skyldes, at kondensatoren tilbyder uendelig modstand mod DC-str\u00f8m, hvilket resulterer i intet str\u00f8mflow og derfor ingen gl\u00f8d fra p\u00e6ren.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-are-the-disadvantages-of-dc-electricity\">Hvad er ulemperne ved DC-elektricitet<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Elektricitet transmitteres gennem ledninger, og n\u00e5r den er i form af j\u00e6vnstr\u00f8m (DC), g\u00e5r en betydelig m\u00e6ngde elektricitet tabt og omdannes til varme. Dette energitab er en stor ulempe ved at bruge DC-elektricitet.<\/p><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>J\u00e6vnstr\u00f8m (DC) er en type elektrisk str\u00f8m, der flyder i en enkelt retning uden at \u00e6ndre polaritet. I mods\u00e6tning til vekselstr\u00f8m (AC), som periodisk \u00e6ndrer retning, giver DC en konstant sp\u00e6nding eller str\u00f8m.<\/p>","protected":false},"author":4,"featured_media":12868,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"[{\"keyword\": \"Alternating Current\", \"idxall\": 0, \"keywordtitlesimi\": 0.907987117767334, \"keywordslugsimi\": 0.8815386295318604, \"paratitlesimi\": 0.7454914450645447, \"paraslugsimi\": 0.694885790348053, \"slug\": \"what-is-alternating-current-ac\", \"title\": \"What is Alternating Current (AC)\", \"id\": 12822}, {\"keyword\": \"electrical current\", \"idxall\": 0, \"keywordtitlesimi\": 0.7831687331199646, \"keywordslugsimi\": 0.7831687331199646, \"paratitlesimi\": 0.6778258085250854, \"paraslugsimi\": 0.6778258085250854, \"slug\": \"what-is-current\", \"title\": \"What is Current\", \"id\": 13544}, {\"keyword\": \"electrical current\", \"idxall\": 0, \"keywordtitlesimi\": 0.7592698931694031, \"keywordslugsimi\": 0.7014175057411194, \"paratitlesimi\": 0.7454914450645447, \"paraslugsimi\": 0.694885790348053, \"slug\": \"what-is-alternating-current-ac\", \"title\": \"What is Alternating Current (AC)\", \"id\": 12822}]","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"Direct Current (Dc)","glossary_alter":"","glossary_def":"Direct Current (DC) is a term used in the lighting industry to describe a type of electrical current that flows in a single direction without changing polarity. Unlike Alternating Current (AC), which periodically changes direction, DC provides a constant voltage or current. It can be obtained from various sources such as batteries, solar cells, fuel cells, and modified alternators. DC power is known for its consistency in voltage delivery, making it a preferred choice for many electronic devices. These devices often rely on DC power sources like batteries.\n\nDC power can also be created from AC power by using a rectifier, which converts AC to DC. This conversion process allows electronic devices to convert the AC power available from outlets into the DC power they require. Additionally, a transformer may be used to adjust the voltage level of the DC power to match the requirements of the device.\n\nIt is important to note that not all electrical devices utilize DC power. Many household appliances, such as lamps, washing machines, and refrigerators, operate on AC power directly supplied from the power grid.\n\nIn summary, Direct Current (DC) in the lighting industry refers to a type of electrical current that flows in a single direction without changing polarity. It can be obtained from sources like batteries, solar cells, fuel cells, and modified alternators. DC power is consistent in voltage delivery and is commonly used in electronic devices, which often rely on DC power sources like batteries. It can also be created from AC power using a rectifier. However, not all electrical devices use DC power, as many household appliances operate on AC power supplied directly from the power grid.","article_task":"","footnotes":""},"categories":[102],"tags":[99],"class_list":["post-13321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-glossary"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Direct Current (DC) - Rayzeek<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rayzeek.com\/da\/ordliste\/hvad-er-jaevnstrom-dc\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Direct Current (DC) - Rayzeek\" \/>\n<meta property=\"og:description\" content=\"Direct Current (DC) is a type of electrical current that flows in a single direction without changing polarity. Unlike Alternating Current (AC), which periodically changes direction, DC provides a constant voltage or current.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rayzeek.com\/da\/ordliste\/hvad-er-jaevnstrom-dc\" \/>\n<meta property=\"og:site_name\" content=\"Rayzeek\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/bester001\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/bester001\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-08-01T04:03:50+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-12-26T08:37:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-10.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Horace He\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@RayzeekTech\" \/>\n<meta name=\"twitter:site\" content=\"@RayzeekTech\" \/>\n<meta name=\"twitter:label1\" content=\"Skrevet af\" \/>\n\t<meta name=\"twitter:data1\" content=\"Horace He\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimeret l\u00e6setid\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc\"},\"author\":{\"name\":\"Horace He\",\"@id\":\"https:\/\/www.rayzeek.com\/#\/schema\/person\/ff0b4bd6573444e02efc8613274549c4\"},\"headline\":\"What is Direct Current (DC)\",\"datePublished\":\"2023-08-01T04:03:50+00:00\",\"dateModified\":\"2023-12-26T08:37:52+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc\"},\"wordCount\":525,\"publisher\":{\"@id\":\"https:\/\/www.rayzeek.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-10.jpg\",\"keywords\":[\"glossary\"],\"articleSection\":[\"glossary\"],\"inLanguage\":\"da-DK\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc\",\"url\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc\",\"name\":\"What is Direct Current (DC) - Rayzeek\",\"isPartOf\":{\"@id\":\"https:\/\/www.rayzeek.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-10.jpg\",\"datePublished\":\"2023-08-01T04:03:50+00:00\",\"dateModified\":\"2023-12-26T08:37:52+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc#breadcrumb\"},\"inLanguage\":\"da-DK\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"da-DK\",\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc#primaryimage\",\"url\":\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-10.jpg\",\"contentUrl\":\"https:\/\/www.rayzeek.com\/wp-content\/uploads\/2023\/06\/rayzeek-glossary-image-10.jpg\",\"width\":1200,\"height\":800},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.rayzeek.com\/glossary\/what-is-direct-current-dc#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.rayzeek.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What is Direct Current (DC)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.rayzeek.com\/#website\",\"url\":\"https:\/\/www.rayzeek.com\/\",\"name\":\"Rayzeek\",\"description\":\"Motion Sensor &amp; 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