{"id":2318,"date":"2020-10-12T16:27:59","date_gmt":"2020-10-12T14:27:59","guid":{"rendered":"https:\/\/www.starfelt.se\/?p=2318"},"modified":"2020-10-12T16:27:59","modified_gmt":"2020-10-12T14:27:59","slug":"berakning-av-i-u-p-r","status":"publish","type":"post","link":"https:\/\/dev.starfelt.se\/index.php\/2020\/10\/12\/berakning-av-i-u-p-r\/","title":{"rendered":"Ber\u00e4kning av I, U, P &#038; R"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2318\" class=\"elementor elementor-2318\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-58f387f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"58f387f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-e37516d\" data-id=\"e37516d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-347f984 elementor-widget elementor-widget-text-editor\" data-id=\"347f984\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Lite om ber\u00e4kning av str\u00f6m, sp\u00e4nning, effekt och motst\u00e5nd. I formler anv\u00e4nds bokst\u00e4ver f\u00f6r att \u00e5sk\u00e5dligg\u00f6ra str\u00f6m, sp\u00e4nning o.s.v.:<\/p><ul><li>Str\u00f6m = I (m\u00e4ts i Ampere = A)<\/li><li>Sp\u00e4nning = U (m\u00e4ts i Volt = V)<\/li><li>Effekt = P (m\u00e4ts i Watt = W)<\/li><li>Motst\u00e5nd = R (m\u00e4ts i Ohm = \u03a9)<\/li><\/ul><p style=\"padding-left: 40px;\">(F\u00f6renklat kallas likstr\u00f6msmotst\u00e5nd f\u00f6r resistans (icke frekvensberoende), v\u00e4xelstr\u00f6msmotst\u00e5nd kallas impedans och inneh\u00e5ller d\u00e5 vanligen, men inte n\u00f6dv\u00e4ndigtvis, en resistans samt en frekvensberoende del som kallas reaktans som \u00e4r antingen kapacitiv eller induktiv.)<\/p><p>I bilden med formler utg\u00e5r man fr\u00e5n mitten och v\u00e4ljer d\u00e4rifr\u00e5n den fj\u00e4rdedel som innh\u00e5ller det som man vill ber\u00e4kna, t.ex. str\u00f6mmen = I.<br \/>L\u00e5t oss anta att vi har ett slutsteg med effekten 200W i 8 ohm, hur stor blir d\u00e5 str\u00f6mmen I? Anv\u00e4nd formeln d\u00e4r I, P och R ing\u00e5r i den h\u00f6gra nedre kvadranten:<\/p><p>Dela effekten med motst\u00e5ndet och ta sedan kvadratroten ur detta s\u00e5 f\u00e5r man <br \/>str\u00f6mmen: I = (P\/R) , I =\u00a0 (200\/8) = 5A !<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-26ddd8e\" data-id=\"26ddd8e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5a54a79 elementor-widget elementor-widget-hotspot\" data-id=\"5a54a79\" data-element_type=\"widget\" data-settings=\"{&quot;hotspot&quot;:[{&quot;_id&quot;:&quot;25e5bb9&quot;,&quot;hotspot_label&quot;:&quot;&quot;,&quot;hotspot_link&quot;:{&quot;url&quot;:&quot;&quot;,&quot;is_external&quot;:&quot;&quot;,&quot;nofollow&quot;:&quot;&quot;,&quot;custom_attributes&quot;:&quot;&quot;},&quot;hotspot_icon&quot;:{&quot;value&quot;:&quot;&quot;,&quot;library&quot;:&quot;&quot;},&quot;hotspot_custom_size&quot;:&quot;no&quot;,&quot;hotspot_tooltip_content&quot;:&quot;L\\u00e4gg till din text f\\u00f6r inforuta h\\u00e4r&quot;,&quot;hotspot_horizontal&quot;:&quot;left&quot;,&quot;hotspot_vertical&quot;:&quot;top&quot;,&quot;hotspot_tooltip_position&quot;:&quot;no&quot;,&quot;hotspot_position&quot;:null}],&quot;hotspot_sequenced_animation&quot;:&quot;no&quot;,&quot;tooltip_position&quot;:&quot;top&quot;,&quot;tooltip_trigger&quot;:&quot;click&quot;,&quot;tooltip_animation&quot;:&quot;e-hotspot--fade-in-out&quot;}\" data-widget_type=\"hotspot.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.starfelt.se\/wp-content\/uploads\/2020\/10\/puir.gif\" title=\"\" alt=\"\" loading=\"lazy\" \/><br \/>\n<b>Warning<\/b>:  Undefined array key \"hotspot_offset_x\" in <b>\/home\/starfelt\/domains\/dev.starfelt.se\/wp-content\/plugins\/elementor-pro\/modules\/hotspot\/widgets\/hotspot.php<\/b> on line <b>1060<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Trying to access array offset on null in <b>\/home\/starfelt\/domains\/dev.starfelt.se\/wp-content\/plugins\/elementor-pro\/modules\/hotspot\/widgets\/hotspot.php<\/b> on line <b>1060<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"hotspot_offset_y\" in <b>\/home\/starfelt\/domains\/dev.starfelt.se\/wp-content\/plugins\/elementor-pro\/modules\/hotspot\/widgets\/hotspot.php<\/b> on line <b>1061<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Trying to access array offset on null in <b>\/home\/starfelt\/domains\/dev.starfelt.se\/wp-content\/plugins\/elementor-pro\/modules\/hotspot\/widgets\/hotspot.php<\/b> on line <b>1061<\/b><br \/>\n\n\t\t\t\t\t\t<div class=\"e-hotspot elementor-repeater-item-25e5bb9      e-hotspot--circle\">\n\n\t\t\t\t\t\t\t\t<div class=\"e-hotspot__button e-hotspot--expand\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"e-hotspot__outer-circle\"><\/div>\n\t\t\t\t\t\t<div class=\"e-hotspot__inner-circle\"><\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"e-hotspot__tooltip  e-hotspot--tooltip-position e-hotspot--fade-in-out \" >\n\t\t\t\t\t\tL\u00e4gg till din text f\u00f6r inforuta h\u00e4r\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\n\t\t\t<\/div>\n\n\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Lite om ber\u00e4kning av str\u00f6m, sp\u00e4nning, effekt och motst\u00e5nd. I formler anv\u00e4nds bokst\u00e4ver f\u00f6r att \u00e5sk\u00e5dligg\u00f6ra str\u00f6m, sp\u00e4nning o.s.v.: Str\u00f6m = I (m\u00e4ts i Ampere = A) Sp\u00e4nning = U [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2320,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25,29],"tags":[],"class_list":["post-2318","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guider","category-kabel-kablage"],"_links":{"self":[{"href":"https:\/\/dev.starfelt.se\/index.php\/wp-json\/wp\/v2\/posts\/2318","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dev.starfelt.se\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dev.starfelt.se\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dev.starfelt.se\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/dev.starfelt.se\/index.php\/wp-json\/wp\/v2\/comments?post=2318"}],"version-history":[{"count":0,"href":"https:\/\/dev.starfelt.se\/index.php\/wp-json\/wp\/v2\/posts\/2318\/revisions"}],"wp:attachment":[{"href":"https:\/\/dev.starfelt.se\/index.php\/wp-json\/wp\/v2\/media?parent=2318"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dev.starfelt.se\/index.php\/wp-json\/wp\/v2\/categories?post=2318"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dev.starfelt.se\/index.php\/wp-json\/wp\/v2\/tags?post=2318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}