{"id":668,"date":"2012-09-22T08:36:17","date_gmt":"2012-09-22T08:36:17","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=668"},"modified":"2012-09-22T08:36:17","modified_gmt":"2012-09-22T08:36:17","slug":"4%d0%bf1%d0%bb4p1l-triode-curves-2","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2012\/09\/22\/4%d0%bf1%d0%bb4p1l-triode-curves-2\/","title":{"rendered":"4\u041f1\u041b\/4P1L triode curves 2"},"content":{"rendered":"<p><a title=\"4\u041f1\u041b\/4P1L triode curves\" href=\"http:\/\/www.bartola.co.uk\/valves\/2012\/06\/29\/4%d0%bf1%d0%bb4p1l-triode-curves\/\">Previously<\/a> I publish my 4P1L\/4\u041f1\u041b triode-strapped curves using my curve tracer. <a href=\"http:\/\/www.diyaudio.com\/forums\/tubes-valves\/173255-diy-curve-tracer-26.html\">A forum friend<\/a> who helped me in building my tracer as he was building his own, suggested using two tools for capturing curves (&#8220;<a href=\"http:\/\/www.quintessa.org\/FreeSoftware\/index.html\">Graph Grabber<\/a>&#8220;) and plotting curves, loadlines, etc. (&#8220;<a href=\"http:\/\/www.padowan.dk\/download\/\">Graph<\/a>&#8220;).<\/p>\n<p>Here is an example of the\u00a04P1L\/4\u041f1\u041b triode-strapped curves using both applications to produce the safe operating area based on 7.5W anode dissipation. This can be extended to 9W if we consider the screen dissipation as well.<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/09\/4P1L-curves.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"671\" data-permalink=\"https:\/\/www.bartola.co.uk\/valves\/2012\/09\/22\/4%d0%bf1%d0%bb4p1l-triode-curves-2\/4p1l-curves\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/09\/4P1L-curves.png?fit=750%2C666&amp;ssl=1\" data-orig-size=\"750,666\" data-comments-opened=\"1\" data-image-title=\"4P1L curves\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/09\/4P1L-curves.png?fit=750%2C666&amp;ssl=1\" class=\"alignleft size-full wp-image-671\" title=\"4P1L curves\" src=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/09\/4P1L-curves.png?resize=750%2C666\" alt=\"\" width=\"750\" height=\"666\" srcset=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/09\/4P1L-curves.png?w=750&amp;ssl=1 750w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/09\/4P1L-curves.png?resize=300%2C266&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/09\/4P1L-curves.png?resize=337%2C300&amp;ssl=1 337w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Previously I publish my 4P1L\/4\u041f1\u041b triode-strapped curves using my curve tracer. A forum friend who helped me in building my tracer as he was building his own, suggested using two tools for capturing curves (&#8220;Graph Grabber&#8220;) and plotting curves, loadlines, etc. (&#8220;Graph&#8220;). Here is an example of the\u00a04P1L\/4\u041f1\u041b triode-strapped curves using both applications to produce &hellip; <a href=\"https:\/\/www.bartola.co.uk\/valves\/2012\/09\/22\/4%d0%bf1%d0%bb4p1l-triode-curves-2\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;4\u041f1\u041b\/4P1L triode curves 2&#8221;<\/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":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[12,24,5],"tags":[782,110,781,39,7],"class_list":["post-668","post","type-post","status-publish","format-standard","hentry","category-dht-valves","category-valve-curve-tracer","category-valves","tag-4p1l","tag-4p1l-triode-curves","tag-valve-curve-tracer","tag-valve-tester-2","tag-valves-2"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2r2tK-aM","jetpack_likes_enabled":true,"jetpack-related-posts":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/668","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=668"}],"version-history":[{"count":2,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/668\/revisions"}],"predecessor-version":[{"id":672,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/668\/revisions\/672"}],"wp:attachment":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/media?parent=668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/categories?post=668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/tags?post=668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}