{"id":52,"date":"2019-04-07T18:27:00","date_gmt":"2019-04-07T16:27:00","guid":{"rendered":"https:\/\/www.deeplake.ch\/cms\/?p=52"},"modified":"2020-01-30T10:27:33","modified_gmt":"2020-01-30T09:27:33","slug":"hoefer-ps500xt-lab-psu","status":"publish","type":"post","link":"https:\/\/www.deeplake.ch\/cms\/2019\/04\/hoefer-ps500xt-lab-psu\/","title":{"rendered":"Hoefer PS500XT Lab PSU"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Modifying an electrophoresis generator for lab usage<\/h2>\n\n\n\n<p>Hoefer PS500XT &#8211; Electrophoresis HV power supply modified for tube lab purpose. 500V at 400mA should suffice for many circuit developments.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2020\/01\/hoefer_front_panel.jpg\" alt=\"\" class=\"wp-image-54\"\/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"changes\">Changes :<\/h4>\n\n\n\n<ul><li>replace the large on\/off\/timer switch by an isolated, quick-to-operate, safe switch<\/li><li>added a fan on the back, outside of the chassis, because it\u2019s a  little bit too tight inside, with the large snubber resistors. The 12V  fan is powered with 8V, pulled from the +15V opamp with a 3W\/220\u03a9  resistor in serie.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"upcoming\">Upcoming :<\/h4>\n\n\n\n<ul><li>230\/115V auto-transformer from Toroidy (yes, it\u2019s a US, 115V device)<\/li><li>CLC filter<\/li><\/ul>\n\n\n\n<p><em>Thanks to members of diyAudio, especially smoking-amp, PRR, Bfpca !<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Modifying an electrophoresis generator for lab usage Hoefer PS500XT &#8211; Electrophoresis HV power supply modified for tube lab purpose. 500V at 400mA should suffice for many circuit developments. Changes : replace the large on\/off\/timer switch by an isolated, quick-to-operate, safe switch added a fan on the back, outside of the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":53,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[6,16,15],"_links":{"self":[{"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/posts\/52"}],"collection":[{"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/comments?post=52"}],"version-history":[{"count":4,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/posts\/52\/revisions"}],"predecessor-version":[{"id":58,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/posts\/52\/revisions\/58"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/media\/53"}],"wp:attachment":[{"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/media?parent=52"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/categories?post=52"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/tags?post=52"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}