{"id":364,"date":"2025-12-10T13:16:33","date_gmt":"2025-12-10T04:16:33","guid":{"rendered":"https:\/\/www.testsystem.co.jp\/en\/?p=364"},"modified":"2026-02-25T13:20:50","modified_gmt":"2026-02-25T04:20:50","slug":"word5","status":"publish","type":"post","link":"https:\/\/www.testsystem.co.jp\/en\/word5\/","title":{"rendered":"Resistance Measurement (2-Wire Method)"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>Introduction<\/strong><\/h2>\n\n\n\n<p>This article explains the general method for resistance measurement.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Details<\/strong><\/h2>\n\n\n\n<p>Resistance is measured using digital multimeters (DMMs) or analog testers. Measurement methods are generally classified into 2\u2011wire (2\u2011terminal) and 4\u2011wire (4\u2011terminal), selected according to the required accuracy and application.<\/p>\n\n\n\n<p>This article focuses on the 2\u2011wire resistance measurement method.<\/p>\n\n\n\n<p><strong>Measurement Principle: Constant\u2011Current Method<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>A small, constant current (several mA to several tens of \u00b5A) is applied to the resistor under test (R1).<\/li>\n\n\n\n<li>The voltage across R1 is measured.<\/li>\n\n\n\n<li>The resistance value of R1 is calculated using Ohm\u2019s Law.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Reference Diagram<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"404\" height=\"239\" src=\"https:\/\/www.testsystem.co.jp\/en\/wp-content\/uploads\/2025\/12\/word5.png\" alt=\"\" class=\"wp-image-901\" srcset=\"https:\/\/www.testsystem.co.jp\/en\/wp-content\/uploads\/2025\/12\/word5.png 404w, https:\/\/www.testsystem.co.jp\/en\/wp-content\/uploads\/2025\/12\/word5-300x177.png 300w\" sizes=\"auto, (max-width: 404px) 100vw, 404px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>Applications<\/strong><\/h2>\n\n\n\n<p>Kyoritsu Test System applies this principle in our in\u2011circuit testers, achieving higher accuracy and faster resistance measurement.<\/p>\n\n\n\n<p>When performing the \u201c2\u2011wire resistance measurement\u201d described here on resistors mounted on PCBs or equipment, surrounding elements such as wiring may affect the measurement. In some cases, alternative measurement methods may be more suitable.<\/p>\n\n\n\n<p>If you are unsure how to accurately perform a particular measurement, please feel free to contact us for assistance.<\/p>\n","protected":false},"excerpt":{"rendered":"Introduction This article explains the general method for resistance measurement. Details Resistance...","protected":false},"author":1,"featured_media":368,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[33,34,35,36,37,38,39,40,41,42,43],"class_list":["post-364","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-techincs","tag-tag14","tag-tag13","tag-tag12","tag-tag11","tag-tag10","tag-tag9","tag-tag8","tag-tag7","tag-tag6","tag-tag5","tag-tag4"],"_links":{"self":[{"href":"https:\/\/www.testsystem.co.jp\/en\/wp-json\/wp\/v2\/posts\/364","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.testsystem.co.jp\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.testsystem.co.jp\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.testsystem.co.jp\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.testsystem.co.jp\/en\/wp-json\/wp\/v2\/comments?post=364"}],"version-history":[{"count":0,"href":"https:\/\/www.testsystem.co.jp\/en\/wp-json\/wp\/v2\/posts\/364\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.testsystem.co.jp\/en\/wp-json\/wp\/v2\/media\/368"}],"wp:attachment":[{"href":"https:\/\/www.testsystem.co.jp\/en\/wp-json\/wp\/v2\/media?parent=364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.testsystem.co.jp\/en\/wp-json\/wp\/v2\/categories?post=364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.testsystem.co.jp\/en\/wp-json\/wp\/v2\/tags?post=364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}