{"id":1514,"date":"2013-05-05T19:44:51","date_gmt":"2013-05-05T18:44:51","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=1514"},"modified":"2013-05-05T20:28:21","modified_gmt":"2013-05-05T19:28:21","slug":"push-pull-fascination-part-4","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2013\/05\/05\/push-pull-fascination-part-4\/","title":{"rendered":"Push-Pull fascination (Part 4)"},"content":{"rendered":"

Continuing with this series of blog posts around the 6C4C push-pull design. As suggested my 45 in my previous blog entry<\/a>, here is the 4P1L-4P1L version:<\/p>\n

\"6C4C<\/a>The first 4P1L driver stage remains unchanged, as does the output stage. The addition of the 4P1L differential pair with CCS tail and LL1660\/pp IT is the main change of this design. The LL1660<\/a> is configured in ALT M or 2.25+2.25:2+2. \u00a0I guess that a different IT could be used instead to get a lower output impedance on the diff pair and improve the performance in A2. The amp has more gain that I need in this configuration as it delivers its maximum power (circa 8W) when input is 1.2V peak.<\/p>\n

So how does it performs?<\/p>\n

\"6C4C<\/a>\u00a0Very low distortion indeed. About 0.06% up to 8W. Mainly odd harmonics dominating the sound of this amp.<\/p>\n

Interesting findings…<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Continuing with this series of blog posts around the 6C4C push-pull design. As suggested my 45 in my previous blog entry, here is the 4P1L-4P1L version: The first 4P1L driver stage remains unchanged, as does the output stage. The addition of the 4P1L differential pair with CCS tail and LL1660\/pp IT is the main change … Continue reading “Push-Pull fascination (Part 4)”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_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},"jetpack_post_was_ever_published":false},"categories":[12,157,67],"tags":[782,286,382,383,387,388,392],"class_list":["post-1514","post","type-post","status-publish","format-standard","hentry","category-dht-valves","category-push-pull-designs","category-thd","tag-4p1l","tag-4p1l-driver","tag-6c4c-pp","tag-6c4c-push-pull","tag-ll1660","tag-ll1660pp","tag-push-pull-fascination"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2r2tK-oq","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1514","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=1514"}],"version-history":[{"count":2,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1514\/revisions"}],"predecessor-version":[{"id":1518,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1514\/revisions\/1518"}],"wp:attachment":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/media?parent=1514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/categories?post=1514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/tags?post=1514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}