{"id":1172,"date":"2017-05-11T13:19:00","date_gmt":"2017-05-11T13:19:00","guid":{"rendered":"https:\/\/www.ed-k.de\/applications\/example-1\/"},"modified":"2026-06-08T11:53:46","modified_gmt":"2026-06-08T11:53:46","slug":"example1","status":"publish","type":"page","link":"https:\/\/www.ed-k.de\/en\/applications\/example1\/","title":{"rendered":"Example 1: PFC Choke with nano crystalline core"},"content":{"rendered":"<div class='clear'><\/div><div id='sub_menu1'  class='av-submenu-container av-8fego-d095b7e4bd6dbd12dd715752bfaf0f3b main_color  avia-builder-el-0  el_before_av_one_full  avia-builder-el-first  av-sticky-submenu container_wrap fullsize' style='z-index:301' ><div class='container av-menu-mobile-disabled av-submenu-pos-center'><ul id=\"menu-anwendungen-englisch\" class=\"av-subnav-menu\" role=\"menu\"><li role=\"menuitem\" id=\"menu-item-1178\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-top-level menu-item-top-level-1\"><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example1\/\" itemprop=\"url\" tabindex=\"0\"><span class=\"avia-bullet\"><\/span><span class=\"avia-menu-text\">Example 1<\/span><span class=\"avia-menu-fx\"><span class=\"avia-arrow-wrap\"><span class=\"avia-arrow\"><\/span><\/span><\/span><\/a><\/li>\n<li role=\"menuitem\" id=\"menu-item-7916\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-top-level menu-item-top-level-2\"><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example2\/\" itemprop=\"url\" tabindex=\"0\"><span class=\"avia-bullet\"><\/span><span class=\"avia-menu-text\">Example 2<\/span><span class=\"avia-menu-fx\"><span class=\"avia-arrow-wrap\"><span class=\"avia-arrow\"><\/span><\/span><\/span><\/a><\/li>\n<li role=\"menuitem\" id=\"menu-item-8169\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-top-level menu-item-top-level-3\"><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example3\/\" itemprop=\"url\" tabindex=\"0\"><span class=\"avia-bullet\"><\/span><span class=\"avia-menu-text\">Example 3<\/span><span class=\"avia-menu-fx\"><span class=\"avia-arrow-wrap\"><span class=\"avia-arrow\"><\/span><\/span><\/span><\/a><\/li>\n<li role=\"menuitem\" id=\"menu-item-7954\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-top-level menu-item-top-level-4\"><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example4\/\" itemprop=\"url\" tabindex=\"0\"><span class=\"avia-bullet\"><\/span><span class=\"avia-menu-text\">Example 4<\/span><span class=\"avia-menu-fx\"><span class=\"avia-arrow-wrap\"><span class=\"avia-arrow\"><\/span><\/span><\/span><\/a><\/li>\n<li role=\"menuitem\" id=\"menu-item-6792\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-top-level menu-item-top-level-5\"><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example5\/\" itemprop=\"url\" tabindex=\"0\"><span class=\"avia-bullet\"><\/span><span class=\"avia-menu-text\">Example 5<\/span><span class=\"avia-menu-fx\"><span class=\"avia-arrow-wrap\"><span class=\"avia-arrow\"><\/span><\/span><\/span><\/a><\/li>\n<li role=\"menuitem\" id=\"menu-item-6793\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-top-level menu-item-top-level-6\"><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example6\/\" itemprop=\"url\" tabindex=\"0\"><span class=\"avia-bullet\"><\/span><span class=\"avia-menu-text\">Example 6<\/span><span class=\"avia-menu-fx\"><span class=\"avia-arrow-wrap\"><span class=\"avia-arrow\"><\/span><\/span><\/span><\/a><\/li>\n<li role=\"menuitem\" id=\"menu-item-1322\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-top-level menu-item-top-level-7\"><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example7\/\" itemprop=\"url\" tabindex=\"0\"><span class=\"avia-bullet\"><\/span><span class=\"avia-menu-text\">Example 7<\/span><span class=\"avia-menu-fx\"><span class=\"avia-arrow-wrap\"><span class=\"avia-arrow\"><\/span><\/span><\/span><\/a><\/li>\n<li role=\"menuitem\" id=\"menu-item-10128\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-top-level menu-item-top-level-8\"><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example8\/\" itemprop=\"url\" tabindex=\"0\"><span class=\"avia-bullet\"><\/span><span class=\"avia-menu-text\">Example 8<\/span><span class=\"avia-menu-fx\"><span class=\"avia-arrow-wrap\"><span class=\"avia-arrow\"><\/span><\/span><\/span><\/a><\/li>\n<\/ul><\/div><\/div><div class='sticky_placeholder'><\/div><div id='after_submenu_1'  class='main_color av_default_container_wrap container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-1172'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1ynqgw-742466c140dd9b211f7e47f9bbbcac6e\">\n.flex_column.av-1ynqgw-742466c140dd9b211f7e47f9bbbcac6e{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1ynqgw-742466c140dd9b211f7e47f9bbbcac6e av_one_full  avia-builder-el-1  el_after_av_submenu  el_before_av_one_full  avia-builder-el-first  first flex_column_div av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1qetfc-e639785ce2343b72ba76c12e1d357c67\">\n#top .av-special-heading.av-1qetfc-e639785ce2343b72ba76c12e1d357c67{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-1qetfc-e639785ce2343b72ba76c12e1d357c67 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-1qetfc-e639785ce2343b72ba76c12e1d357c67 .av-subheading{\nfont-size:17px;\n}\n<\/style>\n<div  class='av-special-heading av-1qetfc-e639785ce2343b72ba76c12e1d357c67 av-special-heading-h1 blockquote modern-quote  avia-builder-el-2  avia-builder-el-no-sibling '><h1 class='av-special-heading-tag '  itemprop=\"headline\"  >Example 1: PFC Choke with nano crystalline core<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1ll3kg-5fd5bde5327c603cac213a4616ee15a3\">\n.flex_column.av-1ll3kg-5fd5bde5327c603cac213a4616ee15a3{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1ll3kg-5fd5bde5327c603cac213a4616ee15a3 av_one_full  avia-builder-el-3  el_after_av_one_full  el_before_av_one_full  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-1hjngg-8e88a94e3d857286d7971408401fefe6 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>The single phase PFC Choke with nano crystalline core in this example is dedicated for an active 3-phase power factor correction and has a rated inductance of 500\u00a0\u00b5H and a rated current of 40\u00a0A<sub>RMS<\/sub> (peak current in the real application up to 70\u00a0A at rated RMS current). The ribbon core consists of nano crystalline alloy with high saturation flux density.<\/p>\n<p>The inductance of this choke decreases moderately up to 60\u00a0A (approximately 20%), which makes sense for the economical point of view and is not critical for the application. Beyond 60\u00a0A the inductance decreases much faster.<\/p>\n<p><span lang=\"en-GB\">At 90 A, the inductor has an differential inductance of no more than 120 \u00b5H! The circuit designer needs to take this into account for overload operation, even if a short overload operation wouldn\u2019t cause thermal problems to the inductor.<\/span><\/p>\n<p><span lang=\"en-GB\">In the current application, however, this would result in such high switching frequencies that the switching transistors would be overloaded.<\/span><\/p>\n<\/div><\/section><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-16ucbc-30d01115839bd938e883ee66eaec0195\">\n.flex_column.av-16ucbc-30d01115839bd938e883ee66eaec0195{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-16ucbc-30d01115839bd938e883ee66eaec0195 av_one_full  avia-builder-el-5  el_after_av_one_full  el_before_av_section  avia-builder-el-last  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-132hvs-3179d21a4e8428a2c35cef1113c0966e\">\n.avia-image-container.av-132hvs-3179d21a4e8428a2c35cef1113c0966e img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-132hvs-3179d21a4e8428a2c35cef1113c0966e .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-132hvs-3179d21a4e8428a2c35cef1113c0966e av-styling- avia-align-center  avia-builder-el-6  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-9856 avia-img-lazy-loading-not-9856 avia_image ' src=\"https:\/\/www.ed-k.de\/wp-content\/uploads\/Ex1E.png\" alt='' title='Ex1E'  height=\"562\" width=\"663\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.ed-k.de\/wp-content\/uploads\/Ex1E.png 663w, https:\/\/www.ed-k.de\/wp-content\/uploads\/Ex1E-300x254.png 300w\" sizes=\"(max-width: 663px) 100vw, 663px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-xcmm8-1a24865c7278f48bf96b21c03b9c311b '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\"><strong><a href=\"https:\/\/www.ed-k.de\/wp-content\/uploads\/ex\/Ex1E.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Entire measurement report<\/a><\/strong><\/p>\n<\/div><\/section><\/p><\/div>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_1'  class='avia-section av-29yrr8-157d43ccc1b620851f24205544807491 main_color avia-section-default avia-no-border-styling  avia-builder-el-8  el_after_av_one_full  avia-builder-el-last  avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-1172'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kk0yz8-4cb4b3a8fc01f7159018cd6b21ceda28\">\n#top .hr.av-kk0yz8-4cb4b3a8fc01f7159018cd6b21ceda28{\nmargin-top:30px;\nmargin-bottom:30px;\n}\n.hr.av-kk0yz8-4cb4b3a8fc01f7159018cd6b21ceda28 .hr-inner{\nwidth:45%;\nborder-color:#f9b032;\nmax-width:45%;\n}\n.hr.av-kk0yz8-4cb4b3a8fc01f7159018cd6b21ceda28 .av-seperator-icon{\ncolor:#f9b032;\n}\n.hr.av-kk0yz8-4cb4b3a8fc01f7159018cd6b21ceda28 .av-seperator-icon.avia-svg-icon svg:first-child{\nfill:#f9b032;\nstroke:#f9b032;\n}\n<\/style>\n<div  class='hr av-kk0yz8-4cb4b3a8fc01f7159018cd6b21ceda28 hr-custom  avia-builder-el-9  el_before_av_one_fourth  avia-builder-el-first  hr-center hr-icon-yes'><span class='hr-inner inner-border-av-border-fat'><span class=\"hr-inner-style\"><\/span><\/span><span class='av-seperator-icon avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue8c5' data-av_iconfont='entypo-fontello' ><\/span><span class='hr-inner inner-border-av-border-fat'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<div class='flex_column_table av-jtv6no-74827c657582de717c52794d20ead7db sc-av_one_fourth av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jtv6no-74827c657582de717c52794d20ead7db\">\n.flex_column.av-jtv6no-74827c657582de717c52794d20ead7db{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-jtv6no-74827c657582de717c52794d20ead7db av_one_fourth  avia-builder-el-10  el_after_av_hr  el_before_av_one_half  first flex_column_table_cell av-equal-height-column av-align-top av-zero-column-padding  '     ><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-h0yuro-db502fcf78f240a4e229a6780983fb65\">\n.flex_column.av-h0yuro-db502fcf78f240a4e229a6780983fb65{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-h0yuro-db502fcf78f240a4e229a6780983fb65 av_one_half  avia-builder-el-11  el_after_av_one_fourth  el_before_av_one_fourth  flex_column_table_cell av-equal-height-column av-align-top av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1k0hhw-fd1063b0b3d87f4c0e38574804e7732a\">\n#top .av_textblock_section.av-1k0hhw-fd1063b0b3d87f4c0e38574804e7732a .avia_textblock{\nfont-size:15px;\n}\n<\/style>\n<section  class='av_textblock_section av-1k0hhw-fd1063b0b3d87f4c0e38574804e7732a '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><ol>\n<li><strong><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example1\/\">PFC choke with nanocrystalline core<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example2\/\">Smoothing choke\u00a0with ferrite core under temperature influence<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example3\/\">Smoothing choke\u00a0with high flux core<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example4\/\">Mains line choke with laminated iron core<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example5\/\">VHF choke with ferrite rod core<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example6\/\">3-phase choke for mains filter<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example7\/\"> Current compensated chokes<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.ed-k.de\/en\/applications\/example8\/\">Low-Inductance, High-Current SMD Inductor<\/a><\/strong><\/li>\n<\/ol>\n<\/div><\/section><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1cgpjo-549f616e177e4151924120fead3b144e\">\n.flex_column.av-1cgpjo-549f616e177e4151924120fead3b144e{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1cgpjo-549f616e177e4151924120fead3b144e av_one_fourth  avia-builder-el-13  el_after_av_one_half  avia-builder-el-last  flex_column_table_cell av-equal-height-column av-align-top av-zero-column-padding  '     ><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":7872,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1172","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Example 1: PFC Choke with nano crystalline core<\/title>\n<meta name=\"description\" content=\"Example 1: measurement of a single-phase reactor for an active 3-phase power factor correction including measurement protocols.\" \/>\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.ed-k.de\/en\/applications\/example1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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