{"id":1521,"date":"2013-05-06T13:11:48","date_gmt":"2013-05-06T12:11:48","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=1521"},"modified":"2013-05-06T13:27:11","modified_gmt":"2013-05-06T12:27:11","slug":"4-65a-se-amp-46-filament-supply-tested","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2013\/05\/06\/4-65a-se-amp-46-filament-supply-tested\/","title":{"rendered":"4-65a SE Amp: 46 filament supply tested"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/05\/20130506-131030.jpg\"><img data-recalc-dims=\"1\" decoding=\"async\" class=\"alignnone size-full\" alt=\"20130506-131030.jpg\" src=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/05\/20130506-131030.jpg?w=840\" \/><\/a><\/p>\n<p>Finished the second channel and tested the filament supply. The filament array which is formed by two paralleled pairs of 20W 10\u03a9 wirewound resistors gets hot as expected. The array temperature is about 110-126\u00b0C at an ambient temperature of 24\u00b0C. The anode of the 46 gets to 49\u00b0C after 20 min of use and the heatsink stays at 42\u00b0C whereas the regulator TO-220 transistors are about 45\u00b0C. There is about \u00a030W dissipated on each array. Yes I know, a lot of power but the filament bias is hard to beat in terms of sound in my view.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Finished the second channel and tested the filament supply. The filament array which is formed by two paralleled pairs of 20W 10\u03a9 wirewound resistors gets hot as expected. The array temperature is about 110-126\u00b0C at an ambient temperature of 24\u00b0C. The anode of the 46 gets to 49\u00b0C after 20 min of use and the &hellip; <a href=\"https:\/\/www.bartola.co.uk\/valves\/2013\/05\/06\/4-65a-se-amp-46-filament-supply-tested\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;4-65a SE Amp: 46 filament supply tested&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[150,12,153,158,5],"tags":[137,778,394,272,287],"class_list":["post-1521","post","type-post","status-publish","format-image","hentry","category-4-65a-se-amplifier-2","category-dht-valves","category-driver","category-se-designs","category-valves","tag-4-65a-se-amplifier","tag-778","tag-46-dht","tag-46-driver","tag-filament-bias","post_format-post-format-image"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2r2tK-ox","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/comments?post=1521"}],"version-history":[{"count":2,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1521\/revisions"}],"predecessor-version":[{"id":1522,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1521\/revisions\/1522"}],"wp:attachment":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/media?parent=1521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/categories?post=1521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/tags?post=1521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}