{"id":15845,"date":"2021-05-11T20:48:08","date_gmt":"2021-05-12T03:48:08","guid":{"rendered":"https:\/\/rustybolt.info\/wordpress\/?p=15845"},"modified":"2021-05-12T11:07:41","modified_gmt":"2021-05-12T18:07:41","slug":"2021-05-11-power-supply-protection-diodes","status":"publish","type":"post","link":"https:\/\/rustybolt.info\/wordpress\/?p=15845","title":{"rendered":"2021-05-11 Power Supply Protection Diodes"},"content":{"rendered":"<p>First off, *all* power supplies should have what this one has.<\/p>\n<p>A high current diode across the output jacks, cathode or banded end to positive. This is to protect the output from reverse voltage.<\/p>\n<p>A high current diode across the 2N3055 pass transistor, cathode or banded end towards the collector. This protects the transistor from reverse voltage.<\/p>\n<p>Both these diodes must be rated at more than the power supply&#8217;s maximum current.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-15844 alignnone size-full\" src=\"https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2021\/05\/screenshot_20210511-1926358798063027554584270.png\" width=\"1080\" height=\"1920\" data-temp-aztec-id=\"8e0b577f-f557-4b8b-9684-9a60ee08d1ed\" srcset=\"https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2021\/05\/screenshot_20210511-1926358798063027554584270.png 1080w, https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2021\/05\/screenshot_20210511-1926358798063027554584270-169x300.png 169w, https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2021\/05\/screenshot_20210511-1926358798063027554584270-576x1024.png 576w, https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2021\/05\/screenshot_20210511-1926358798063027554584270-768x1365.png 768w, https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2021\/05\/screenshot_20210511-1926358798063027554584270-864x1536.png 864w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/p>\n<p>Notice the output jacks have a capacitor across them. This should also have a 0.1 uF ceramic disk in parallel.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>First off, *all* power supplies should have what this one has. A high current diode across the output jacks, cathode or banded end to positive. This is to protect the output from reverse voltage. A high current diode across the 2N3055 pass transistor, cathode or banded end towards the collector. This protects the transistor from<a href=\"https:\/\/rustybolt.info\/wordpress\/?p=15845\"> <\/p>\n<p> (Read More&#8230;)<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76,264,296],"tags":[1058,1060,1059],"class_list":["post-15845","post","type-post","status-publish","format-standard","hentry","category-diodes","category-power-supplies-2","category-schematics","tag-overvoltage","tag-protection","tag-reverse-voltage"],"_links":{"self":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/15845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15845"}],"version-history":[{"count":2,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/15845\/revisions"}],"predecessor-version":[{"id":15851,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/15845\/revisions\/15851"}],"wp:attachment":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}