{"id":532,"date":"2014-12-21T05:46:17","date_gmt":"2014-12-21T05:46:17","guid":{"rendered":"http:\/\/afrotechmods.com\/tutorials\/?p=532"},"modified":"2020-05-18T04:49:10","modified_gmt":"2020-05-18T04:49:10","slug":"adjustable-switch-mode-power-supply-tutorial","status":"publish","type":"post","link":"http:\/\/afrotechmods.com\/tutorials\/2014\/12\/21\/adjustable-switch-mode-power-supply-tutorial\/","title":{"rendered":"Adjustable switch mode power supply tutorial"},"content":{"rendered":"<p>This video explains the purpose of feedback resistors in a buck converter circuit and shows you how to calculate them. Then I show you how to build a high current adjustable power supply using an LM2678 and a potentiometer.<\/p>\n<style>.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }<\/style>\n<div class=\"embed-container\"><iframe src=\"https:\/\/www.youtube.com\/embed\/QR8qsygs1Kw\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" frameborder=\"0\"><\/iframe><\/div>\n<p>Parts list:<br \/>\nLM2678T-ADJ:<br \/>\nhttp:\/\/octopart.com\/lm2678t-adjnopb-texas+instruments-15290279<br \/>\nInput electrolytic cap:<br \/>\nhttp:\/\/octopart.com\/eeu-fm1h221-ecg-208642<br \/>\nOutput electrolytic cap:<br \/>\nhttp:\/\/octopart.com\/eeu-fr1c102b-panasonic-18987619<br \/>\nInput and output ceramic caps:<br \/>\nhttp:\/\/octopart.com\/partsearch#!?q=UMK325BJ106MM-T<br \/>\nBootstrap cap:<br \/>\nhttp:\/\/octopart.com\/c420c104k5r5ta7200-kemet-193582<br \/>\nSchottky diode:<br \/>\nhttp:\/\/octopart.com\/stps5l60-stmicroelectronics-334357<br \/>\n22uH inductor:<br \/>\nhttp:\/\/octopart.com\/aiap-03-220-k-abracon-22130082<br \/>\nPotentiometer:<br \/>\nhttp:\/\/octopart.com\/p090s-14t20br10k-bi+technologies-5426431<br \/>\nSchematic:<br \/>\n<img decoding=\"async\" src=\"http:\/\/i.imgur.com\/XkGTV09.jpg\" alt=\"adjustable buck converter schematic\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This video explains the purpose of feedback resistors in a buck converter circuit and shows you how to calculate them. Then I show you how to build a high current adjustable power supply using an LM2678 and a potentiometer. Parts list: LM2678T-ADJ: http:\/\/octopart.com\/lm2678t-adjnopb-texas+instruments-15290279 Input electrolytic cap: http:\/\/octopart.com\/eeu-fm1h221-ecg-208642 Output electrolytic cap: http:\/\/octopart.com\/eeu-fr1c102b-panasonic-18987619 Input and output ceramic [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":820,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[6],"tags":[51,27,25],"class_list":["post-532","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-advanced-tutorials","tag-buck-converter","tag-power-electronics","tag-voltage-regulation"],"acf":[],"aioseo_notices":[],"jetpack_featured_media_url":"http:\/\/afrotechmods.com\/tutorials\/wp-content\/uploads\/2014\/12\/adjustable-dc-to-dc-thumbnail-4-332x187.jpg","_links":{"self":[{"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/posts\/532","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/comments?post=532"}],"version-history":[{"count":4,"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/posts\/532\/revisions"}],"predecessor-version":[{"id":1269,"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/posts\/532\/revisions\/1269"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/media\/820"}],"wp:attachment":[{"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/media?parent=532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/categories?post=532"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/afrotechmods.com\/tutorials\/wp-json\/wp\/v2\/tags?post=532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}