{"id":19563,"date":"2026-10-19T11:43:26","date_gmt":"2026-10-19T03:43:26","guid":{"rendered":"https:\/\/www.wehopower.com\/news\/power-supply-ripple-acceptance-test-matrix\/"},"modified":"2026-10-19T12:23:01","modified_gmt":"2026-10-19T04:23:01","slug":"power-supply-ripple-acceptance-test-matrix","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/","title":{"rendered":"How to Set Power Supply Ripple Acceptance Criteria"},"content":{"rendered":"<div class=\"weho-blog-content\" id=\"weho-article-02\" data-weho-article-id=\"02\">\n<p class=\"direct-answer\">Power supply ripple acceptance criteria depend on both the connected load and the measurement method. Set one criterion for the supply output and another for the receiving circuit, then compare each result with its own limit under defined conditions. A source can pass its specification while the installed load fails, as the worked 24 V example below shows.<\/p>\n<figure class=\"scene-hero\" id=\"application-scene-02\"><a href=\"https:\/\/www.wehopower.com\/fa\/product\/ndr-dinrail-240w-ac-to-dc-single-output-switching-power-supply\/\" aria-label=\"View WEHO NDR-240-24 product details\" title=\"NDR-240-24 product details\" data-weho-link-kind=\"product_detail\" data-weho-link-role=\"product_image\" data-weho-model=\"NDR-240-24\" class=\"weho-product-image-link\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/02-scene-960.webp?quality=85&#038;strip=all 960w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/02-scene.webp?quality=85&#038;strip=all 1672w\" sizes=\"(max-width:760px) calc(100vw - 36px), 760px\"><img fetchpriority=\"high\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/02-scene.webp?quality=85&#038;strip=all\" width=\"1672\" height=\"941\" alt=\"How to Set Power Supply Ripple Acceptance Criteria  title=\" loading=\"eager\" decoding=\"async\" how to set power supply ripple acceptance criteria title =\"\"><\/picture><\/a><figcaption>AI-assisted test-preparation illustration based on WEHO product references; the instrument is inactive and the probes are disconnected. This is not a WEHO laboratory photograph, measurement method or ripple test result.<span class=\"weho-image-actions\" data-weho-image-actions=\"1\"><span class=\"weho-image-hint\">NDR-240-24 \u00b7 Select image for product details.<\/span><a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/02-scene.png\" target=\"_blank\" rel=\"noopener noreferrer\" data-weho-link-role=\"view_original\">View larger image \u2197<\/a><\/span><\/figcaption><\/figure>\n<details class=\"article-toc\" open>\n<summary>\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/summary>\n<nav class=\"toc-links\" aria-label=\"Article sections\"><a href=\"#two-ripple-decisions\">Set separate limits for the supply and the load<\/a><a href=\"#ripple-acceptance-matrix\">Build the pass\/fail matrix before testing<\/a><a href=\"#read-ripple-verdict\">Worked result: source test passes, load test fails<\/a><a href=\"#supplier-ripple-comparison\">Compare supplier quotes on the same measurement basis<\/a><a href=\"#mismatch-near-limit\">Follow a clear sequence when results disagree<\/a><a href=\"#ripple-acceptance-record\">Save a test record that another lab can reproduce<\/a><a href=\"#ripple-acceptance-faq\">Questions about ripple acceptance tests<\/a><\/nav>\n<\/details>\n<section id=\"two-ripple-decisions\">\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u062f\u0647\u06cc\u062f<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Set_separate_limits_for_the_supply_and_the_load\" >Set separate limits for the supply and the load<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Build_the_passfail_matrix_before_testing\" >Build the pass\/fail matrix before testing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Worked_result_source_test_passes_load_test_fails\" >Worked result: source test passes, load test fails<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Compare_supplier_quotes_on_the_same_measurement_basis\" >Compare supplier quotes on the same measurement basis<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Follow_a_clear_sequence_when_results_disagree\" >Follow a clear sequence when results disagree<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Save_a_test_record_that_another_lab_can_reproduce\" >Save a test record that another lab can reproduce<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Questions_about_ripple_acceptance_tests\" >Questions about ripple acceptance tests<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Can_RMS_ripple_be_converted_directly_to_peak-to-peak\" >Can RMS ripple be converted directly to peak-to-peak?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Does_adding_a_capacitor_invalidate_the_test\" >Does adding a capacitor invalidate the test?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Does_a_ripple_pass_establish_EMC_compliance\" >Does a ripple pass establish EMC compliance?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-acceptance-test-matrix\/#Ask_about_ripple_limits_for_your_application\" >Ask about ripple limits for your application<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Set_separate_limits_for_the_supply_and_the_load\"><\/span>Set separate limits for the supply and the load<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Before putting a ripple limit into an OEM purchase specification, define the quantity being measured: peak-to-peak voltage, RMS noise, or noise within a particular frequency range. A number without its metric and method leaves room for different interpretations.<\/p>\n<p><a href=\"https:\/\/www.xppower.com\/portals\/0\/trainingslides\/RippleNoise-Module14.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">The referenced ripple-and-noise training note<\/a> distinguishes peak-to-peak and RMS reporting and explains why consistent measurement conditions matter. Apply that distinction to the requirement, rather than selecting whichever result looks smaller.<\/p>\n<p>The supplier\u2019s output-terminal limit applies to its documented test configuration. Your load requirement applies to the receiving circuit with the project\u2019s harness, fitted components and operating states. Record both. For bandwidth, probe connections and output-loading setup, use WEHO\u2019s <a href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-ripple-measurement-match-bandwidth-probe-loop-and-output-loading-first\/\" data-weho-link-kind=\"guide\">ripple measurement guide<\/a>. This article turns those measurements into separate source-terminal and receiving-circuit pass\/fail decisions.<\/p>\n<p>Check the receiving device\u2019s <a href=\"https:\/\/www.wehopower.com\/fa\/news\/24v-control-power-voltage-budget\/#define-load-limits\" data-weho-link-kind=\"guide\">steady-state voltage window<\/a> alongside its ripple requirement so the supply and distribution path satisfy both.<\/p>\n<figure class=\"article-relation\" id=\"relation-02\"><picture><source media=\"(max-width:640px)\" type=\"image\/webp\" srcset=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/relation-02-mobile.webp\" width=\"380\" height=\"830\"><source media=\"(max-width:640px)\" type=\"image\/png\" srcset=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/relation-02-mobile.png\" width=\"380\" height=\"830\"><source type=\"image\/webp\" srcset=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/relation-02-desktop.webp\"><img loading=\"lazy\" class=\"relation-image\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/relation-02-desktop.png?quality=85&#038;strip=all\" width=\"2240\" height=\"1180\" alt=\"How to Set Power Supply Ripple Acceptance Criteria  title=\" decoding=\"async\" how to set power supply ripple acceptance criteria title =\"\"><\/picture><figcaption class=\"relation-caption\">TP1 is assessed against the source requirement; TP2 is assessed against the receiving circuit\u2019s requirement. Record each point\u2019s method and disposition separately.<\/figcaption><a class=\"relation-detail\" href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/relation-02-desktop.png\" target=\"_blank\" rel=\"noopener noreferrer\">View full diagram<\/a><\/figure>\n<\/section>\n<section id=\"ripple-acceptance-matrix\">\n<h2><span class=\"ez-toc-section\" id=\"Build_the_passfail_matrix_before_testing\"><\/span>Build the pass\/fail matrix before testing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In this hypothetical acceptance example, a project uses a 24 V supply at 230 V AC input, a steady 5 A total load, and 25 \u00b0C ambient. The source requirement permits 120 mV peak-to-peak at test point TP1; the receiving circuit permits 80 mV peak-to-peak at TP2.<\/p>\n<p>The example compares the readings directly with their limits. For an actual test, agree in advance how measurement uncertainty and near-limit results will be handled.<\/p>\n<div class=\"weho-table-wrap\" tabindex=\"0\" role=\"region\" aria-label=\"Hypothetical supplier-to-load ripple acceptance matrix\">\n<table>\n<caption>Hypothetical supplier-to-load ripple acceptance matrix<\/caption>\n<thead>\n<tr>\n<th scope=\"col\">Requirement and owner<\/th>\n<th scope=\"col\">Point and method<\/th>\n<th scope=\"col\">Assumed limit<\/th>\n<th scope=\"col\">Example reading<\/th>\n<th scope=\"col\">Decision<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Supplier conformity; supplier quality<\/th>\n<td>TP1 supply output, agreed method S1<\/td>\n<td>\u2264120 mVp-p<\/td>\n<td>96 mVp-p<\/td>\n<td>Pass this defined requirement<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Equipment suitability; equipment engineering<\/th>\n<td>TP2 receiving circuit, agreed method E1<\/td>\n<td>\u226480 mVp-p<\/td>\n<td>104 mVp-p<\/td>\n<td>Fail this operating-state requirement<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Additional diagnostic capture; test engineer<\/th>\n<td>TP1, different bandwidth from S1<\/td>\n<td>No acceptance limit assigned<\/td>\n<td>150 mVp-p<\/td>\n<td>Diagnostic only; cannot judge S1 conformity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Give methods S1 and E1 a setup sheet recording bandwidth, coupling, probe connection, acquisition settings, capture duration, measurement algorithm, output components and exact test point. Both example methods use a 20 MHz upper bandwidth limit. Select the actual bandwidth from the applicable requirement and method.<\/p>\n<p>S1 uses the agreed source fixture. E1 uses the actual project harness and fitted load components. Identify any capacitors and filters in each configuration; do not silently add a measurement capacitor to make a result pass.<\/p>\n<\/section>\n<section id=\"read-ripple-verdict\">\n<h2><span class=\"ez-toc-section\" id=\"Worked_result_source_test_passes_load_test_fails\"><\/span>Worked result: source test passes, load test fails<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>At TP1, 96 mVp-p is below the assumed 120 mVp-p source limit by 24 mV: the source requirement passes. At TP2, 104 mVp-p exceeds the assumed 80 mVp-p equipment limit by 24 mV: the equipment requirement fails.<\/p>\n<p><strong>Next decision:<\/strong> Keep the source pass in the supplier record and resolve the TP2 failure before equipment release. Confirm method E1 and the receiving-device requirement, then compare supply, harness or load changes against the same acceptance test.<\/p>\n<p>Do not subtract the two peak-to-peak readings and call the difference \u201ccable noise.\u201d Separate captures and measurement networks do not establish the origin or phase relationship of their waveform components. Investigate that question with an appropriate diagnostic plan.<\/p>\n<\/section>\n<section id=\"supplier-ripple-comparison\">\n<h2><span class=\"ez-toc-section\" id=\"Compare_supplier_quotes_on_the_same_measurement_basis\"><\/span>Compare supplier quotes on the same measurement basis<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In a hypothetical quote comparison, Supplier A lists 100 mVp-p with a stated fixture, while Supplier B lists 80 mVp-p without a method. Obtain B\u2019s method before ranking the two figures, and ask both suppliers which operating states their data covers.<\/p>\n<p><a href=\"https:\/\/www.advancedenergy.com\/getmedia\/faa39601-a9ed-4ec1-83ae-45a8f0dd824a\/en-lv-ripple-noise-application-note.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">The external application note AN1105<\/a> explains that reported ripple and noise depend on setup and measurement point, and that load and temperature matter when comparing specifications.<\/p>\n<p>For initial candidate screening, the public <a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2021\/11\/NDR-240.pdf\" target=\"_blank\" rel=\"noopener noreferrer\" data-weho-link-kind=\"datasheet\">WEHO NDR-240 specification<\/a> lists a 150 mVp-p ripple-and-noise entry (labeled \u201cWave and Noise\u201d on that one-page sheet). When preparing a purchase specification, request the applicable bandwidth, probe connection, external capacitor network and document revision for the exact model and operating conditions. Compare the response with your source and receiving-circuit requirements before sample acceptance.<\/p>\n<p class=\"related-model-documents\">\u0631\u0627 <a href=\"https:\/\/www.wehopower.com\/fa\/product\/ndr-dinrail-240w-ac-to-dc-single-output-switching-power-supply\/\" data-weho-link-kind=\"product_detail\">NDR-240 product details<\/a> identify the model family used for that document example. Retain the specification and agreed measurement conditions with the sample record; the example readings above are not measurements of this product.<\/p>\n<\/section>\n<section id=\"mismatch-near-limit\">\n<h2><span class=\"ez-toc-section\" id=\"Follow_a_clear_sequence_when_results_disagree\"><\/span>Follow a clear sequence when results disagree<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Before changing the power supply or adding a filter, check whether the results answer the same question:<\/p>\n<ol>\n<li><strong>Match the method.<\/strong> Check the point, bandwidth, probing, acquisition and fitted components. A changed setup calls for a repeat of the agreed method or an agreed method revision.<\/li>\n<li><strong>Match the operating state.<\/strong> Confirm the input, load, output setting, temperature and stabilization conditions against the requirement.<\/li>\n<li><strong>Apply the relevant limit.<\/strong> Compare TP1 with its source criterion and TP2 with its equipment criterion. Keep a wider-bandwidth diagnostic trace separate.<\/li>\n<\/ol>\n<p><a href=\"https:\/\/www.tek.com\/en\/documents\/application-note\/probing-techniques-accurate-voltage-measurements-power-converters-oscillos\" target=\"_blank\" rel=\"noopener noreferrer\">The referenced probing application note<\/a> describes how lead geometry and probe sensitivity can affect low-level measurements. Keep a setup photograph with the record so a second laboratory can reproduce the connection.<\/p>\n<p>For a hypothetical reading of 119 mVp-p against a 120 mVp-p limit, the agreed decision rule matters. Record measurement uncertainty and repeatability, then apply the rule consistently. Changing averaging until the display drops below the limit changes the test rather than resolving the result.<\/p>\n<p>If a supply change is still needed, use the <a href=\"https:\/\/www.wehopower.com\/fa\/news\/industrial-power-supply-replacement-interface-validation\/#interface-matrix\" data-weho-link-kind=\"guide\">replacement compatibility checklist<\/a> to review startup, status interfaces and recovery behavior alongside ripple performance.<\/p>\n<\/section>\n<section id=\"ripple-acceptance-record\">\n<h2><span class=\"ez-toc-section\" id=\"Save_a_test_record_that_another_lab_can_reproduce\"><\/span>Save a test record that another lab can reproduce<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/weho-blog-2026-10-17-product-v4-02-ripple-acceptance-matrix.csv\" target=\"_blank\" rel=\"noopener noreferrer\" data-weho-link-kind=\"worksheet\" download>Download the ripple acceptance matrix<\/a> with the source and equipment examples. Replace the assumed values and complete the method fields for your project.<\/p>\n<p>Retain one row per requirement and operating state, with these fields:<\/p>\n<ul>\n<li><strong>Identity:<\/strong> project, sample serial or lot, complete model, revision, and document version.<\/li>\n<li><strong>Requirement:<\/strong> owner, measurement point, metric, limit, and decision rule.<\/li>\n<li><strong>Condition:<\/strong> input, output setting, load state, ambient, stabilization criterion, harness, and fitted components.<\/li>\n<li><strong>Evidence:<\/strong> method ID, instruments, settings, setup photograph, waveform file, observation, and disposition.<\/li>\n<\/ul>\n<p>Keep each result attached to its tested configuration and operating state. Extend the plan to the input, load and temperature conditions the equipment must cover. Define startup and load-step tests separately from the steady ripple measurement. Keep the continuous-current budget from the <a href=\"https:\/\/www.wehopower.com\/fa\/news\/how-to-size-a-24v-din-rail-power-supply-for-a-control-panel\/\" data-weho-link-kind=\"guide\">24 V DIN rail power supply sizing guide<\/a> alongside this record; sufficient current capacity alone does not establish ripple acceptance.<\/p>\n<\/section>\n<section id=\"ripple-acceptance-faq\">\n<h2><span class=\"ez-toc-section\" id=\"Questions_about_ripple_acceptance_tests\"><\/span>Questions about ripple acceptance tests<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Can_RMS_ripple_be_converted_directly_to_peak-to-peak\"><\/span>Can RMS ripple be converted directly to peak-to-peak?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Not with a universal multiplier for an unknown waveform. Request the specified metric and method; narrow spikes and waveform shape affect the relationship.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_adding_a_capacitor_invalidate_the_test\"><\/span>Does adding a capacitor invalidate the test?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A capacitor belongs in the test if the agreed method or installed design includes it. An undocumented addition changes the configuration and cannot silently replace the original acceptance test.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_a_ripple_pass_establish_EMC_compliance\"><\/span>Does a ripple pass establish EMC compliance?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. It closes only the defined ripple requirement. Keep equipment EMC evidence and its applicable test requirements as a separate assessment.<\/p>\n<\/section>\n<aside class=\"article-cta\">\n<h2><span class=\"ez-toc-section\" id=\"Ask_about_ripple_limits_for_your_application\"><\/span>Ask about ripple limits for your application<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/www.wehopower.com\/fa\/contact\/\" data-weho-link-kind=\"inquiry\">Contact WEHO about ripple acceptance conditions<\/a>. Start with:<\/p>\n<ul>\n<li>The target supply model or required DC output.<\/li>\n<li>The input range, output load and relevant temperature conditions.<\/li>\n<li>Any source or receiving-device ripple limits you already have.<\/li>\n<\/ul>\n<p>If the measurement method or decision rule is not yet defined, say so in your inquiry. You can optionally attach the <a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/weho-blog-2026-10-17-product-v4-02-ripple-acceptance-matrix.csv\" target=\"_blank\" rel=\"noopener noreferrer\" data-weho-link-kind=\"worksheet\" download>ripple acceptance worksheet<\/a>.<\/p>\n<p>You can use this request: \u201cPlease confirm the applicable ripple-and-noise limit for our target model and input\/load conditions, and identify the measurement conditions needed for sample evaluation.\u201d<\/p>\n<\/aside>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>In a hypothetical 24V example, a 96 mVp-p source reading passes its 120 mVp-p limit while a 104 mVp-p receiving-circuit reading fails its 80 mVp-p limit. Resolve the equipment result under the agreed method, and request exact-model test conditions using the project information already available.<\/p>","protected":false},"author":2,"featured_media":19436,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[284],"class_list":["post-19563","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-product-articles","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news\/19563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/comments?post=19563"}],"version-history":[{"count":1,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news\/19563\/revisions"}],"predecessor-version":[{"id":19642,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news\/19563\/revisions\/19642"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/media\/19436"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/media?parent=19563"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news_category?post=19563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}