{"id":12779,"date":"2024-10-21T08:11:50","date_gmt":"2024-10-21T08:11:50","guid":{"rendered":"https:\/\/hsmagnet.com\/?p=12022"},"modified":"2025-11-04T02:03:51","modified_gmt":"2025-11-04T02:03:51","slug":"%e6%b0%b8%e4%b9%85%e7%a3%81%e7%9f%b3","status":"publish","type":"post","link":"https:\/\/hsmagnet.com\/ja\/2024\/10\/21\/electropermanent-magnet\/","title":{"rendered":"\u6c38\u4e45\u78c1\u77f3\uff08EPM\uff09\u3068\u306f\uff1f \u7dcf\u5408\u30ac\u30a4\u30c9"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">An <strong>electropermanent magnet (EPM)<\/strong> is a type of <strong>permanent magnet<\/strong> that can be switched on or off using a brief pulse of electric current. Unlike traditional <strong>electromagnets<\/strong>, which require continuous power to maintain a magnetic field, EPMs use permanent magnets to generate a stable magnetic field without ongoing energy consumption. This makes them highly efficient for applications like <strong>industrial lifting magnets<\/strong> and innovative <strong>self-building structures<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this guide, we\u2019ll explore the <strong>definition<\/strong>, <strong>working principle<\/strong>, and <strong>applications<\/strong> of electropermanent magnets, highlighting their advantages over conventional magnetic systems.<\/p>\n\n\n<div class=\"root-eb-toc-h7100 wp-block-essential-blocks-table-of-contents\"><div class=\"eb-parent-wrapper eb-parent-eb-toc-h7100 \"><div class=\"eb-toc-container eb-toc-h7100  eb-toc-is-not-sticky eb-toc-not-collapsible eb-toc-initially-not-collapsed eb-toc-scrollToTop style-1 list-style-none\" data-scroll-top=\"false\" data-scroll-top-icon=\"fas fa-angle-up\" data-collapsible=\"false\" data-sticky-hide-mobile=\"false\" data-sticky=\"false\" data-scroll-target=\"scroll_to_toc\" data-copy-link=\"false\" data-editor-type=\"\" data-hide-desktop=\"false\" data-hide-tab=\"false\" data-hide-mobile=\"false\" data-itemcollapsed=\"false\" data-highlight-scroll=\"false\"><div class=\"eb-toc-header\"><h2 class=\"eb-toc-title\">Table of Contents<\/h2><\/div><div class=\"eb-toc-wrapper \" data-headers=\"[{&quot;level&quot;:2,&quot;content&quot;:&quot;What is an Electropermanent Magnet?&quot;,&quot;text&quot;:&quot;What is an Electropermanent Magnet?&quot;,&quot;link&quot;:&quot;what-is-an-electropermanent-magnet&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;How Does an Electropermanent Magnet Work?&quot;,&quot;text&quot;:&quot;How Does an Electropermanent Magnet Work?&quot;,&quot;link&quot;:&quot;how-does-an-electropermanent-magnet-work&quot;},{&quot;level&quot;:3,&quot;content&quot;:&quot;EPM Operation Explained&quot;,&quot;text&quot;:&quot;EPM Operation Explained&quot;,&quot;link&quot;:&quot;epm-operation-explained&quot;},{&quot;level&quot;:3,&quot;content&quot;:&quot;Magnetization Switching&quot;,&quot;text&quot;:&quot;Magnetization Switching&quot;,&quot;link&quot;:&quot;magnetization-switching&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Advantages of Electropermanent Magnets&quot;,&quot;text&quot;:&quot;Advantages of Electropermanent Magnets&quot;,&quot;link&quot;:&quot;advantages-of-electropermanent-magnets&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Applications of Electropermanent Magnets&quot;,&quot;text&quot;:&quot;Applications of Electropermanent Magnets&quot;,&quot;link&quot;:&quot;applications-of-electropermanent-magnets&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Electropermanent Magnet vs. Electromagnet&quot;,&quot;text&quot;:&quot;Electropermanent Magnet vs. Electromagnet&quot;,&quot;link&quot;:&quot;electropermanent-magnet-vs-electromagnet&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Conclusion&quot;,&quot;text&quot;:&quot;Conclusion&quot;,&quot;link&quot;:&quot;conclusion&quot;}]\" data-visible=\"[true,true,true,true,true,true]\" data-delete-headers=\"[{&quot;label&quot;:&quot;What is an Electropermanent Magnet?&quot;,&quot;value&quot;:&quot;what-is-an-electropermanent-magnet&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;How Does an Electropermanent Magnet Work?&quot;,&quot;value&quot;:&quot;how-does-an-electropermanent-magnet-work&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;EPM Operation Explained&quot;,&quot;value&quot;:&quot;epm-operation-explained&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Magnetization Switching&quot;,&quot;value&quot;:&quot;magnetization-switching&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Advantages of Electropermanent Magnets&quot;,&quot;value&quot;:&quot;advantages-of-electropermanent-magnets&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Applications of Electropermanent Magnets&quot;,&quot;value&quot;:&quot;applications-of-electropermanent-magnets&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Electropermanent Magnet vs. Electromagnet&quot;,&quot;value&quot;:&quot;electropermanent-magnet-vs-electromagnet&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Conclusion&quot;,&quot;value&quot;:&quot;conclusion&quot;,&quot;isDelete&quot;:false}]\" data-smooth=\"true\" data-top-offset=\"\"><div class=\"eb-toc__list-wrap\"><ul class=\"eb-toc__list\"><li><a href=\"#what-is-an-electropermanent-magnet\">What is an Electropermanent Magnet?<\/a><li><a href=\"#how-does-an-electropermanent-magnet-work\">How Does an Electropermanent Magnet Work?<\/a><ul class=\"eb-toc__list\"><li><a href=\"#epm-operation-explained\">EPM Operation Explained<\/a><li><a href=\"#magnetization-switching\">Magnetization Switching<\/a><\/li><\/ul><li><a href=\"#advantages-of-electropermanent-magnets\">Advantages of Electropermanent Magnets<\/a><li><a href=\"#applications-of-electropermanent-magnets\">Applications of Electropermanent Magnets<\/a><li><a href=\"#electropermanent-magnet-vs-electromagnet\">Electropermanent Magnet vs. Electromagnet<\/a><li><a href=\"#conclusion\">Conclusion<\/a><\/ul><\/div><\/div><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\">What is an Electropermanent Magnet?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An electropermanent magnet consists of two key components:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A <strong>hard magnetic material<\/strong> (high coercivity, e.g., <a href=\"https:\/\/hsmagnet.com\/magnetic-materials\/ndfeb-magnets\/\">NdFeB<\/a>) that maintains a strong, stable magnetic field.<\/li>\n\n\n\n<li>A <strong>soft magnetic material<\/strong> (low coercivity, e.g., <a href=\"https:\/\/hsmagnet.com\/magnetic-materials\/alnico-magnets\/\">AlNiCo<\/a>) whose magnetization direction can be reversed with a current pulse.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">By controlling the magnetization of the soft material via a wire coil, the EPM can toggle its external magnetic field:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>On State<\/strong>: When the hard and soft materials\u2019 magnetizations align, the EPM produces a strong external magnetic field.<\/li>\n\n\n\n<li><strong>Off State<\/strong>: When their magnetizations oppose each other, the external magnetic field is nearly nonexistent.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This unique ability to switch the magnetic field without continuous power distinguishes EPMs from electromagnets, offering <strong>energy efficiency<\/strong> and <strong>reliability<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment-1024x683.webp\" alt=\"Comparison of electropermanent magnet in on and off states, showing magnetization alignment\" class=\"wp-image-13754\" srcset=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment-1024x683.webp 1024w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment-300x200.webp 300w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment-768x512.webp 768w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment-600x400.webp 600w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How Does an Electropermanent Magnet Work?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The principle of an EPM is based on a <strong>magnetic latch<\/strong> configuration, typically involving:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Two <strong>permanent magnets<\/strong> (one hard, one soft).<\/li>\n\n\n\n<li>Two <strong>soft magnetic plates<\/strong> (e.g., iron alloy) that concentrate magnetic flux.<\/li>\n\n\n\n<li>A <strong>coil<\/strong> wound around the soft magnet to apply current pulses.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">EPM Operation Explained<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>On Configuration<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Both magnets\u2019 north poles are aligned (e.g., pointing up).<\/li>\n\n\n\n<li>The magnetic flux flows through the soft magnetic plates, creating a strong external magnetic field, similar to a large magnet with distinct north and south poles.<\/li>\n\n\n\n<li>This state is ideal for applications like lifting <strong>ferrous metals<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Off Configuration<\/strong>:\n<ul class=\"wp-block-list\">\n<li>The soft magnet\u2019s magnetization is reversed using a current pulse, so its poles oppose the hard magnet\u2019s.<\/li>\n\n\n\n<li>The magnetic flux is confined within the soft magnetic plates, forming a closed circuit with minimal external magnetic field.<\/li>\n\n\n\n<li>This allows the magnet to release objects without mechanical intervention.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Magnetization Switching<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>current pulse<\/strong> through the coil generates a magnetic field stronger than the soft magnet\u2019s <strong>intrinsic coercivity<\/strong> (e.g., 50 kA\/m for AlNiCo vs. 1120 kA\/m for NdFeB). This flips the soft magnet\u2019s magnetization direction without affecting the hard magnet, enabling the EPM to toggle between on and off states.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Advantages of Electropermanent Magnets<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Energy Efficiency<\/strong>: EPMs only require a brief current pulse to switch states, unlike electromagnets that consume continuous power.<\/li>\n\n\n\n<li><strong>Reliability<\/strong>: The magnetic field is maintained by permanent magnets, ensuring stability without power sources.<\/li>\n\n\n\n<li><strong>Versatility<\/strong>: EPMs are ideal for applications requiring precise control, such as <strong>industrial lifting<\/strong>, <strong>robotics<\/strong>, and <strong>programmable magnets<\/strong> for self-assembling structures.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Applications of Electropermanent Magnets<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Industrial Lifting Magnets<\/strong>:\n<ul class=\"wp-block-list\">\n<li>EPMs made with <strong>rare earth magnets<\/strong> (e.g., NdFeB) are used to lift heavy <strong>ferrous objects<\/strong>. The magnet can be turned off to release the load, improving safety and efficiency.<\/li>\n\n\n\n<li>Example: Magnetic Lifting Technologies (internal link to a related article).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Self-Building Structures<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Programmable EPMs enable <strong>self-assembling systems<\/strong>, where components align and connect autonomously using controlled magnetic fields.<\/li>\n\n\n\n<li>Example: Research into Programmable Magnetic Structures (internal link).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Robotics and Automation<\/strong>:\n<ul class=\"wp-block-list\">\n<li>EPMs are used in robotic grippers for precise handling of metallic objects without continuous power consumption.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures-1024x683.webp\" alt=\"Examples of electropermanent magnet applications in industrial lifting, robotics, and self-building structures\" class=\"wp-image-13755\" srcset=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures-1024x683.webp 1024w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures-300x200.webp 300w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures-768x512.webp 768w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures-600x400.webp 600w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Electropermanent Magnet vs. Electromagnet<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Feature<\/th><th>Electropermanent Magnet (EPM)<\/th><th>Electromagnet<\/th><\/tr><tr><td><strong>Power Consumption<\/strong><\/td><td>Pulse-based (minimal)<\/td><td>Continuous<\/td><\/tr><tr><td><strong>Magnetic Field Source<\/strong><\/td><td>Permanent magnets<\/td><td>Electric current<\/td><\/tr><tr><td><strong>Applications<\/strong><\/td><td>Lifting, robotics, self-assembly<\/td><td>Broad, less efficient<\/td><\/tr><tr><td><strong>Energy Efficiency<\/strong><\/td><td>High<\/td><td>Low<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Electropermanent magnets (EPMs) offer a revolutionary approach to magnetic technology, combining the strength of <strong>permanent magnets<\/strong> with the control of <strong>electromagnets<\/strong>. Their ability to toggle magnetic fields with minimal energy makes them ideal for <strong>industrial<\/strong>, <strong>robotic<\/strong>, and <strong>innovative applications<\/strong> like self-building structures. By understanding the principles and advantages of EPMs, industries can leverage this technology for greater efficiency and precision.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Explore more about Magnetic Technologies and their applications at <a href=\"https:\/\/hsmagnet.com\/\">HS magnet<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>An electropermanent magnet (EPM) is a type of permanent magnet that can be switched on or off using a brief pulse of electric current. Unlike traditional electromagnets, which require continuous power to maintain a magnetic field, EPMs use permanent magnets to generate a stable magnetic field without ongoing energy consumption. This makes them highly efficient for applications like industrial lifting magnets and innovative self-building structures. In this guide, we\u2019ll explore the definition, working principle, and applications of electropermanent magnets, highlighting their advantages over conventional magnetic systems. What is an Electropermanent Magnet? An electropermanent magnet consists of two key components: By controlling the magnetization of the soft material via a wire [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13753,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","footnotes":""},"categories":[22],"tags":[],"class_list":["post-12779","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-magnetic-applicaitons"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Description and Principle of Electropermanent magnet<\/title>\n<meta name=\"description\" content=\"An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by pulses\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hsmagnet.com\/ja\/2024\/10\/21\/\u6c38\u4e45\u78c1\u77f3\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Description and Principle of Electropermanent magnet\" \/>\n<meta property=\"og:description\" content=\"An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by pulses\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hsmagnet.com\/ja\/2024\/10\/21\/\u6c38\u4e45\u78c1\u77f3\/\" \/>\n<meta property=\"og:site_name\" content=\"Hangzhou HS Magnet Co.,Ltd.\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-21T08:11:50+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-04T02:03:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Close-up-of-an-electropermanent-magnet-device.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"576\" \/>\n\t<meta property=\"og:image:height\" content=\"607\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Jacky Wang\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jacky Wang\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"4\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/\"},\"author\":{\"name\":\"Jacky Wang\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/#\\\/schema\\\/person\\\/2042961b22b388427c42af00bf3eb9fd\"},\"headline\":\"What is an Electropermanent Magnet (EPM)? A Comprehensive Guide\",\"datePublished\":\"2024-10-21T08:11:50+00:00\",\"dateModified\":\"2025-11-04T02:03:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/\"},\"wordCount\":673,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/hsmagnet.com\\\/wp-content\\\/uploads\\\/2024\\\/10\\\/Close-up-of-an-electropermanent-magnet-device.webp\",\"articleSection\":[\"Magnetic Applicaitons\"],\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/\",\"url\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/\",\"name\":\"Description and Principle of Electropermanent magnet\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/hsmagnet.com\\\/wp-content\\\/uploads\\\/2024\\\/10\\\/Close-up-of-an-electropermanent-magnet-device.webp\",\"datePublished\":\"2024-10-21T08:11:50+00:00\",\"dateModified\":\"2025-11-04T02:03:51+00:00\",\"description\":\"An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by pulses\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/#primaryimage\",\"url\":\"https:\\\/\\\/hsmagnet.com\\\/wp-content\\\/uploads\\\/2024\\\/10\\\/Close-up-of-an-electropermanent-magnet-device.webp\",\"contentUrl\":\"https:\\\/\\\/hsmagnet.com\\\/wp-content\\\/uploads\\\/2024\\\/10\\\/Close-up-of-an-electropermanent-magnet-device.webp\",\"width\":576,\"height\":607,\"caption\":\"Close-up of an electropermanent magnet device with key components: hard and soft magnets, coil, and flux plates\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/hsmagnet.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What is an Electropermanent Magnet (EPM)? A Comprehensive Guide\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/#website\",\"url\":\"https:\\\/\\\/hsmagnet.com\\\/\",\"name\":\"Hangzhou HS Magnet Co.,Ltd.\",\"description\":\"Leading manufacturer of premium permanent magnets for industrial applications in china\",\"publisher\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/hsmagnet.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ja\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/#organization\",\"name\":\"Hangzhou HS Magnet Co.,Ltd.\",\"url\":\"https:\\\/\\\/hsmagnet.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/hsmagnet.com\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/logo_pc.png\",\"contentUrl\":\"https:\\\/\\\/hsmagnet.com\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/logo_pc.png\",\"width\":237,\"height\":64,\"caption\":\"Hangzhou HS Magnet Co.,Ltd.\"},\"image\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/#\\\/schema\\\/person\\\/2042961b22b388427c42af00bf3eb9fd\",\"name\":\"Jacky Wang\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/772768cdba99bb92e47ac9e35be1cd4f1ed0df4c6a0394791fa7d3ac0519daf9?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/772768cdba99bb92e47ac9e35be1cd4f1ed0df4c6a0394791fa7d3ac0519daf9?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/772768cdba99bb92e47ac9e35be1cd4f1ed0df4c6a0394791fa7d3ac0519daf9?s=96&d=mm&r=g\",\"caption\":\"Jacky Wang\"},\"sameAs\":[\"https:\\\/\\\/dev.hsmagnet.com\"],\"url\":\"https:\\\/\\\/hsmagnet.com\\\/ja\\\/author\\\/hsmagnet-admin\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u6c38\u4e45\u78c1\u77f3\u306e\u8aac\u660e\u3068\u539f\u7406","description":"\u96fb\u6c17\u6c38\u4e45\u78c1\u77f3\uff08EPM\uff09\u306f\u3001\u5916\u90e8\u78c1\u5834\u3092\u30d1\u30eb\u30b9\u3067\u30aa\u30f3\u307e\u305f\u306f\u30aa\u30d5\u306b\u3067\u304d\u308b\u6c38\u4e45\u78c1\u77f3\u306e\u4e00\u7a2e\u3067\u3059\u3002","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/hsmagnet.com\/ja\/2024\/10\/21\/\u6c38\u4e45\u78c1\u77f3\/","og_locale":"ja_JP","og_type":"article","og_title":"Description and Principle of Electropermanent magnet","og_description":"An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by pulses","og_url":"https:\/\/hsmagnet.com\/ja\/2024\/10\/21\/\u6c38\u4e45\u78c1\u77f3\/","og_site_name":"Hangzhou HS Magnet Co.,Ltd.","article_published_time":"2024-10-21T08:11:50+00:00","article_modified_time":"2025-11-04T02:03:51+00:00","og_image":[{"width":576,"height":607,"url":"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Close-up-of-an-electropermanent-magnet-device.webp","type":"image\/webp"}],"author":"Jacky Wang","twitter_card":"summary_large_image","twitter_misc":{"\u57f7\u7b46\u8005":"Jacky Wang","\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593":"4\u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/#article","isPartOf":{"@id":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/"},"author":{"name":"Jacky Wang","@id":"https:\/\/hsmagnet.com\/#\/schema\/person\/2042961b22b388427c42af00bf3eb9fd"},"headline":"What is an Electropermanent Magnet (EPM)? A Comprehensive Guide","datePublished":"2024-10-21T08:11:50+00:00","dateModified":"2025-11-04T02:03:51+00:00","mainEntityOfPage":{"@id":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/"},"wordCount":673,"commentCount":0,"publisher":{"@id":"https:\/\/hsmagnet.com\/#organization"},"image":{"@id":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/#primaryimage"},"thumbnailUrl":"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Close-up-of-an-electropermanent-magnet-device.webp","articleSection":["Magnetic Applicaitons"],"inLanguage":"ja","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/","url":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/","name":"\u6c38\u4e45\u78c1\u77f3\u306e\u8aac\u660e\u3068\u539f\u7406","isPartOf":{"@id":"https:\/\/hsmagnet.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/#primaryimage"},"image":{"@id":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/#primaryimage"},"thumbnailUrl":"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Close-up-of-an-electropermanent-magnet-device.webp","datePublished":"2024-10-21T08:11:50+00:00","dateModified":"2025-11-04T02:03:51+00:00","description":"\u96fb\u6c17\u6c38\u4e45\u78c1\u77f3\uff08EPM\uff09\u306f\u3001\u5916\u90e8\u78c1\u5834\u3092\u30d1\u30eb\u30b9\u3067\u30aa\u30f3\u307e\u305f\u306f\u30aa\u30d5\u306b\u3067\u304d\u308b\u6c38\u4e45\u78c1\u77f3\u306e\u4e00\u7a2e\u3067\u3059\u3002","breadcrumb":{"@id":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/"]}]},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/#primaryimage","url":"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Close-up-of-an-electropermanent-magnet-device.webp","contentUrl":"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Close-up-of-an-electropermanent-magnet-device.webp","width":576,"height":607,"caption":"Close-up of an electropermanent magnet device with key components: hard and soft magnets, coil, and flux plates"},{"@type":"BreadcrumbList","@id":"https:\/\/hsmagnet.com\/2024\/10\/21\/electropermanent-magnet\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/hsmagnet.com\/"},{"@type":"ListItem","position":2,"name":"What is an Electropermanent Magnet (EPM)? A Comprehensive Guide"}]},{"@type":"WebSite","@id":"https:\/\/hsmagnet.com\/#website","url":"https:\/\/hsmagnet.com\/","name":"\u676d\u5ddeHS\u30de\u30b0\u30cd\u30c3\u30c8\u682a\u5f0f\u4f1a\u793e","description":"\u4e2d\u56fd\u306b\u304a\u3051\u308b\u7523\u696d\u7528\u9014\u5411\u3051\u9ad8\u54c1\u8cea\u6c38\u4e45\u78c1\u77f3\u306e\u5927\u624b\u30e1\u30fc\u30ab\u30fc","publisher":{"@id":"https:\/\/hsmagnet.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/hsmagnet.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"ja"},{"@type":"Organization","@id":"https:\/\/hsmagnet.com\/#organization","name":"\u676d\u5ddeHS\u30de\u30b0\u30cd\u30c3\u30c8\u682a\u5f0f\u4f1a\u793e","url":"https:\/\/hsmagnet.com\/","logo":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/hsmagnet.com\/#\/schema\/logo\/image\/","url":"https:\/\/hsmagnet.com\/wp-content\/uploads\/2025\/08\/logo_pc.png","contentUrl":"https:\/\/hsmagnet.com\/wp-content\/uploads\/2025\/08\/logo_pc.png","width":237,"height":64,"caption":"Hangzhou HS Magnet Co.,Ltd."},"image":{"@id":"https:\/\/hsmagnet.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/hsmagnet.com\/#\/schema\/person\/2042961b22b388427c42af00bf3eb9fd","name":"\u30b8\u30e3\u30c3\u30ad\u30fc\u30fb\u30ef\u30f3","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/secure.gravatar.com\/avatar\/772768cdba99bb92e47ac9e35be1cd4f1ed0df4c6a0394791fa7d3ac0519daf9?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/772768cdba99bb92e47ac9e35be1cd4f1ed0df4c6a0394791fa7d3ac0519daf9?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/772768cdba99bb92e47ac9e35be1cd4f1ed0df4c6a0394791fa7d3ac0519daf9?s=96&d=mm&r=g","caption":"Jacky Wang"},"sameAs":["https:\/\/dev.hsmagnet.com"],"url":"https:\/\/hsmagnet.com\/ja\/author\/hsmagnet-admin\/"}]}},"_links":{"self":[{"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/posts\/12779","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/comments?post=12779"}],"version-history":[{"count":3,"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/posts\/12779\/revisions"}],"predecessor-version":[{"id":14327,"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/posts\/12779\/revisions\/14327"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/media\/13753"}],"wp:attachment":[{"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/media?parent=12779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/categories?post=12779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hsmagnet.com\/ja\/wp-json\/wp\/v2\/tags?post=12779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}