{"id":80,"date":"2012-01-18T23:34:50","date_gmt":"2012-01-18T23:34:50","guid":{"rendered":"http:\/\/www.filippeters.com\/?page_id=80"},"modified":"2012-04-02T17:08:20","modified_gmt":"2012-04-02T17:08:20","slug":"headphone-amp-2","status":"publish","type":"page","link":"https:\/\/www.filippeters.com\/?page_id=80","title":{"rendered":"headphone amp 2"},"content":{"rendered":"<p>Another little headphone amp.<\/p>\n<p>This time the tube is run on a very low voltage, so I could use a 24V power supply.<\/p>\n<p>tube is an ecc82 as the voltage stage, followed by a mosfet as a cathode follower.<\/p>\n<p>the cathode follower dumps into an lm317 as a constant current sink, that also supplies the  filament. ( everything interconnected \ud83d\ude42 ) To get rid of the dc offset, a cap is needed at the output.<\/p>\n<p>works well, sounds good, looks nice next to my computer.<\/p>\n<p> ;<\/p>\n<p> ;<\/p>\n<p> ;<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.filippeters.com\/wp-content\/uploads\/2012\/04\/20120402-100807.jpg\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.filippeters.com\/wp-content\/uploads\/2012\/04\/20120402-100807.jpg?w=474\" alt=\"20120402-100807.jpg\" class=\"alignnone size-full\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Another little headphone amp. This time the tube is run on a very low voltage, so I could use a 24V power supply. tube is an ecc82 as the voltage stage, followed by a mosfet as a cathode follower. the cathode follower dumps into an lm317 as a constant current sink, that also supplies the &hellip; <a href=\"https:\/\/www.filippeters.com\/?page_id=80\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">headphone amp 2<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":26,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"sidebar-page.php","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-80","page","type-page","status-publish","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/P292Q1-1i","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.filippeters.com\/index.php?rest_route=\/wp\/v2\/pages\/80","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.filippeters.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.filippeters.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.filippeters.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.filippeters.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=80"}],"version-history":[{"count":4,"href":"https:\/\/www.filippeters.com\/index.php?rest_route=\/wp\/v2\/pages\/80\/revisions"}],"predecessor-version":[{"id":129,"href":"https:\/\/www.filippeters.com\/index.php?rest_route=\/wp\/v2\/pages\/80\/revisions\/129"}],"up":[{"embeddable":true,"href":"https:\/\/www.filippeters.com\/index.php?rest_route=\/wp\/v2\/pages\/26"}],"wp:attachment":[{"href":"https:\/\/www.filippeters.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=80"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}