{"id":237,"date":"2023-11-25T15:23:16","date_gmt":"2023-11-25T14:23:16","guid":{"rendered":"https:\/\/www.deeplake.ch\/cms\/?p=237"},"modified":"2023-11-25T15:27:20","modified_gmt":"2023-11-25T14:27:20","slug":"linear-power-supply-for-technics-sl-1200","status":"publish","type":"post","link":"https:\/\/www.deeplake.ch\/cms\/2023\/11\/linear-power-supply-for-technics-sl-1200\/","title":{"rendered":"Linear Power Supply for Technics SL-1200"},"content":{"rendered":"\n<p>Precisely, my model is a SL-1210MK2. After reading an interesting article on diyaudio.com on AC-noise inducted by the internal power-supply, I decided to modify my turntable to include a DC power supply, and so take the original transformer out of the chassis.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.kabusa.com\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"762\" src=\"https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2023\/11\/tt_psu_modifications.jpg\" alt=\"\" class=\"wp-image-239\" srcset=\"https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2023\/11\/tt_psu_modifications.jpg 1024w, https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2023\/11\/tt_psu_modifications-300x223.jpg 300w, https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2023\/11\/tt_psu_modifications-768x572.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>The modified internals, while I was at it, I added a proper DC-regulator and strobe switcher, both modules from <a href=\"https:\/\/www.kabusa.com\">KAB USA<\/a>.<\/figcaption><\/figure>\n\n\n\n<p>Based on the design of the 6L6 user of diyaudio forum, I designed my own PCB.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"903\" src=\"https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2023\/11\/tt_psu_module.jpg\" alt=\"\" class=\"wp-image-240\" srcset=\"https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2023\/11\/tt_psu_module.jpg 768w, https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2023\/11\/tt_psu_module-255x300.jpg 255w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption>Rectifier, snubbers, CRCRC filtering, bleeder and LED resistor, all on the PCB.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"611\" height=\"711\" src=\"https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2023\/11\/tt_psu_closed-1.jpg\" alt=\"\" class=\"wp-image-242\" srcset=\"https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2023\/11\/tt_psu_closed-1.jpg 611w, https:\/\/www.deeplake.ch\/cms\/wp-content\/uploads\/2023\/11\/tt_psu_closed-1-258x300.jpg 258w\" sizes=\"(max-width: 611px) 100vw, 611px\" \/><figcaption>Illuminated switch, official Technics logo.<\/figcaption><\/figure>\n\n\n\n<p>The result is clearly excellent, the turntable when not playing is &#8220;black&#8221;, meaning absolutely no noise whatsoever. During playing, the sound is deeper, more present, finer details are revealed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Precisely, my model is a SL-1210MK2. After reading an interesting article on diyaudio.com on AC-noise inducted by the internal power-supply, I decided to modify my turntable to include a DC power supply, and so take the original transformer out of the chassis. Based on the design of the 6L6 user [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":245,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,28],"tags":[],"_links":{"self":[{"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/posts\/237"}],"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=237"}],"version-history":[{"count":5,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/posts\/237\/revisions"}],"predecessor-version":[{"id":250,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/posts\/237\/revisions\/250"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/media\/245"}],"wp:attachment":[{"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/media?parent=237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/categories?post=237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deeplake.ch\/cms\/wp-json\/wp\/v2\/tags?post=237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}