{"id":1671,"date":"2012-03-19T07:45:05","date_gmt":"2012-03-19T14:45:05","guid":{"rendered":"http:\/\/rustybolt.info\/wordpress\/?p=1671"},"modified":"2012-04-05T15:11:59","modified_gmt":"2012-04-05T22:11:59","slug":"2012-03-19","status":"publish","type":"post","link":"https:\/\/rustybolt.info\/wordpress\/?p=1671","title":{"rendered":"2012-03-19 Ancient Dressen Barnes Power Supply"},"content":{"rendered":"<p><a href=\"http:\/\/rustybolt.info\/wordpress\/?attachment_id=2062\" rel=\"attachment wp-att-2062\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-2062\" title=\"DSC_0298S\" src=\"http:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/03\/DSC_0298S-300x226.jpg\" alt=\"\" width=\"300\" height=\"226\" srcset=\"https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/03\/DSC_0298S-300x226.jpg 300w, https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/03\/DSC_0298S.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>This is a photo of an ancient Dressen Barnes power supply from the 1950s.\u00a0 It uses germanium transistors throughout.\u00a0 Some of them are located on the other side of the board, and the only thing that can be seen are the nuts holding them down and the two holes where the leads pass through.\u00a0 Some others are held to the board with fuse clips, presumably so that they can be removed.\u00a0 The wiring was typical of commercial grade equipment for that day.\u00a0 Each component was soldered into the brass studs that were mounted in rows on the board.\u00a0 When the final inspection was done, the inspector painted a red dot of paint on every solder point to tell that it had been checked.\u00a0 The components could be unsoldered to do a repair but the paint would be removed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This is a photo of an ancient Dressen Barnes power supply from the 1950s.\u00a0 It uses germanium transistors throughout.\u00a0 Some of them are located on the other side of the board, and the only thing that can be seen are the nuts holding them down and the two holes where the leads pass through.\u00a0 Some<a href=\"https:\/\/rustybolt.info\/wordpress\/?p=1671\"> <\/p>\n<p> (Read More&#8230;)<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,17,25],"tags":[],"class_list":["post-1671","post","type-post","status-publish","format-standard","hentry","category-electronics","category-meters-and-test-equipment","category-power-supplies"],"_links":{"self":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1671","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=1671"}],"version-history":[{"count":9,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1671\/revisions"}],"predecessor-version":[{"id":2068,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1671\/revisions\/2068"}],"wp:attachment":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}