{"id":804,"date":"2012-11-10T17:53:49","date_gmt":"2012-11-10T17:53:49","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=804"},"modified":"2012-11-10T17:53:49","modified_gmt":"2012-11-10T17:53:49","slug":"6p21s-tetrode","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2012\/11\/10\/6p21s-tetrode\/","title":{"rendered":"6P21S tetrode"},"content":{"rendered":"<h1>Testing a directly heated tetrode<\/h1>\n<p><a href=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/11\/6P21S-tetrode-Vg2100V.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"800\" data-permalink=\"https:\/\/www.bartola.co.uk\/valves\/valve-curves\/6p21s\/6p21s-tetrode-vg2100v\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/11\/6P21S-tetrode-Vg2100V.jpg?fit=3110%2C2361&amp;ssl=1\" data-orig-size=\"3110,2361\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;Canon PowerShot G10&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1352566452&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;6.1&quot;,&quot;iso&quot;:&quot;200&quot;,&quot;shutter_speed&quot;:&quot;1&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"6P21S tetrode Vg2=100V\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/11\/6P21S-tetrode-Vg2100V.jpg?fit=840%2C637&amp;ssl=1\" class=\"alignleft size-medium wp-image-800\" title=\"6P21S tetrode Vg2=100V\" src=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/11\/6P21S-tetrode-Vg2100V-300x227.jpg?resize=300%2C227\" alt=\"\" width=\"300\" height=\"227\" srcset=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/11\/6P21S-tetrode-Vg2100V.jpg?resize=300%2C227&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/11\/6P21S-tetrode-Vg2100V.jpg?resize=1024%2C777&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/11\/6P21S-tetrode-Vg2100V.jpg?resize=395%2C300&amp;ssl=1 395w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/11\/6P21S-tetrode-Vg2100V.jpg?w=1680&amp;ssl=1 1680w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2012\/11\/6P21S-tetrode-Vg2100V.jpg?w=2520&amp;ssl=1 2520w\" sizes=\"auto, (max-width: 300px) 85vw, 300px\" \/><\/a>\u00a0With a screen supply for the curve tracer, now it was time to get some 6P21S tested under various screen voltages. I need to increase anode sweep to provide further visibility!<\/p>\n<p><a title=\"6P21S\" href=\"http:\/\/www.bartola.co.uk\/valves\/valve-curves\/6p21s\/\">More curves<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Testing a directly heated tetrode \u00a0With a screen supply for the curve tracer, now it was time to get some 6P21S tested under various screen voltages. I need to increase anode sweep to provide further visibility! More curves<\/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_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":[24,5],"tags":[143,145],"class_list":["post-804","post","type-post","status-publish","format-standard","hentry","category-valve-curve-tracer","category-valves","tag-6p21s","tag-6p21s-curves"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2r2tK-cY","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/804","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=804"}],"version-history":[{"count":1,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/804\/revisions"}],"predecessor-version":[{"id":805,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/804\/revisions\/805"}],"wp:attachment":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/media?parent=804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/categories?post=804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/tags?post=804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}