{"id":1401,"date":"2013-03-30T19:31:41","date_gmt":"2013-03-30T19:31:41","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=1401"},"modified":"2013-03-30T19:31:41","modified_gmt":"2013-03-30T19:31:41","slug":"4-65a-se-amplifier-testing-filament-regulators","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2013\/03\/30\/4-65a-se-amplifier-testing-filament-regulators\/","title":{"rendered":"4-65a SE Amplifier: testing filament regulators"},"content":{"rendered":"<p>The Rod Coleman Filament Regulators were already tested in the New Year. It seems a long time indeed. Here is a selection of pictures after\u00a0fitting\u00a0the regulators in their\u00a0heat-sinks\u00a0and doing a final test before assembly:<\/p>\n<div class=\"tiled-gallery type-rectangular tiled-gallery-unresized\" data-original-width=\"840\" data-carousel-extra='{&quot;blog_id&quot;:1,&quot;permalink&quot;:&quot;https:\\\/\\\/www.bartola.co.uk\\\/valves\\\/2013\\\/03\\\/30\\\/4-65a-se-amplifier-testing-filament-regulators\\\/&quot;,&quot;likes_blog_id&quot;:35997060}' itemscope itemtype=\"http:\/\/schema.org\/ImageGallery\" > <div class=\"gallery-row\" style=\"width: 840px; height: 388px;\" data-original-width=\"840\" data-original-height=\"388\" > <div class=\"gallery-group images-1\" style=\"width: 580px; height: 388px;\" data-original-width=\"580\" data-original-height=\"388\" > <div class=\"tiled-gallery-item tiled-gallery-item-large\" itemprop=\"associatedMedia\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"> <a href=\"https:\/\/www.bartola.co.uk\/valves\/2013\/03\/30\/4-65a-se-amplifier-testing-filament-regulators\/img_0371\/\" border=\"0\" itemprop=\"url\"> <meta itemprop=\"width\" content=\"576\"> <meta itemprop=\"height\" content=\"384\"> <img decoding=\"async\" class=\"\" data-attachment-id=\"1402\" data-orig-file=\"https:\/\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0371.jpg\" data-orig-size=\"800,533\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;5.6&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;Canon EOS 600D&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1364670706&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;46&quot;,&quot;iso&quot;:&quot;125&quot;,&quot;shutter_speed&quot;:&quot;0.16666666666667&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"IMG_0371\" data-image-description=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0371.jpg?fit=300%2C199&#038;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0371.jpg?fit=800%2C533&#038;ssl=1\" src=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0371.jpg?w=576&#038;h=384&#038;ssl=1\" srcset=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0371.jpg?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0371.jpg?resize=300%2C199&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0371.jpg?resize=450%2C300&amp;ssl=1 450w\" width=\"576\" height=\"384\" loading=\"lazy\" data-original-width=\"576\" data-original-height=\"384\" itemprop=\"http:\/\/schema.org\/image\" title=\"IMG_0371\" alt=\"4-65a\" style=\"width: 576px; height: 384px;\" \/> <\/a> <div class=\"tiled-gallery-caption\" itemprop=\"caption description\"> 4-65a <\/div> <\/div> <\/div> <!-- close group --> <div class=\"gallery-group images-1\" style=\"width: 260px; height: 388px;\" data-original-width=\"260\" data-original-height=\"388\" > <div class=\"tiled-gallery-item tiled-gallery-item-large\" itemprop=\"associatedMedia\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"> <a href=\"https:\/\/www.bartola.co.uk\/valves\/2013\/03\/30\/4-65a-se-amplifier-testing-filament-regulators\/img_0372\/\" border=\"0\" itemprop=\"url\"> <meta itemprop=\"width\" content=\"256\"> <meta itemprop=\"height\" content=\"384\"> <img decoding=\"async\" class=\"\" data-attachment-id=\"1403\" data-orig-file=\"https:\/\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0372.jpg\" data-orig-size=\"533,800\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;4&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;Canon EOS 600D&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1364670730&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;25&quot;,&quot;iso&quot;:&quot;500&quot;,&quot;shutter_speed&quot;:&quot;0.16666666666667&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"IMG_0372\" data-image-description=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0372.jpg?fit=199%2C300&#038;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0372.jpg?fit=533%2C800&#038;ssl=1\" src=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0372.jpg?w=256&#038;h=384&#038;ssl=1\" srcset=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0372.jpg?w=533&amp;ssl=1 533w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0372.jpg?resize=199%2C300&amp;ssl=1 199w\" width=\"256\" height=\"384\" loading=\"lazy\" data-original-width=\"256\" data-original-height=\"384\" itemprop=\"http:\/\/schema.org\/image\" title=\"IMG_0372\" alt=\"Testing the 4-65a filament regulators\" style=\"width: 256px; height: 384px;\" \/> <\/a> <div class=\"tiled-gallery-caption\" itemprop=\"caption description\"> Testing the 4-65a filament regulators <\/div> <\/div> <\/div> <!-- close group --> <\/div> <!-- close row --> <div class=\"gallery-row\" style=\"width: 840px; height: 194px;\" data-original-width=\"840\" data-original-height=\"194\" > <div class=\"gallery-group images-1\" style=\"width: 289px; height: 194px;\" data-original-width=\"289\" data-original-height=\"194\" > <div class=\"tiled-gallery-item tiled-gallery-item-large\" itemprop=\"associatedMedia\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"> <a href=\"https:\/\/www.bartola.co.uk\/valves\/2013\/03\/30\/4-65a-se-amplifier-testing-filament-regulators\/img_0375\/\" border=\"0\" itemprop=\"url\"> <meta itemprop=\"width\" content=\"285\"> <meta itemprop=\"height\" content=\"190\"> <img decoding=\"async\" class=\"\" data-attachment-id=\"1404\" data-orig-file=\"https:\/\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0375.jpg\" data-orig-size=\"800,533\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;5.6&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;Canon EOS 600D&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1364670842&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;55&quot;,&quot;iso&quot;:&quot;125&quot;,&quot;shutter_speed&quot;:&quot;0.16666666666667&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"IMG_0375\" data-image-description=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0375.jpg?fit=300%2C199&#038;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0375.jpg?fit=800%2C533&#038;ssl=1\" src=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0375.jpg?w=285&#038;h=190&#038;ssl=1\" srcset=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0375.jpg?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0375.jpg?resize=300%2C199&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0375.jpg?resize=450%2C300&amp;ssl=1 450w\" width=\"285\" height=\"190\" loading=\"lazy\" data-original-width=\"285\" data-original-height=\"190\" itemprop=\"http:\/\/schema.org\/image\" title=\"IMG_0375\" alt=\"4-65a filaments are lovely\" style=\"width: 285px; height: 190px;\" \/> <\/a> <div class=\"tiled-gallery-caption\" itemprop=\"caption description\"> 4-65a filaments are lovely <\/div> <\/div> <\/div> <!-- close group --> <div class=\"gallery-group images-1\" style=\"width: 131px; height: 194px;\" data-original-width=\"131\" data-original-height=\"194\" > <div class=\"tiled-gallery-item tiled-gallery-item-small\" itemprop=\"associatedMedia\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"> <a href=\"https:\/\/www.bartola.co.uk\/valves\/2013\/03\/30\/4-65a-se-amplifier-testing-filament-regulators\/img_0377\/\" border=\"0\" itemprop=\"url\"> <meta itemprop=\"width\" content=\"127\"> <meta itemprop=\"height\" content=\"190\"> <img decoding=\"async\" class=\"\" data-attachment-id=\"1405\" data-orig-file=\"https:\/\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0377.jpg\" data-orig-size=\"533,800\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;5.6&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;Canon EOS 600D&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1364670870&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;41&quot;,&quot;iso&quot;:&quot;100&quot;,&quot;shutter_speed&quot;:&quot;0.16666666666667&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"IMG_0377\" data-image-description=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0377.jpg?fit=199%2C300&#038;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0377.jpg?fit=533%2C800&#038;ssl=1\" src=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0377.jpg?w=127&#038;h=190&#038;ssl=1\" srcset=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0377.jpg?w=533&amp;ssl=1 533w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0377.jpg?resize=199%2C300&amp;ssl=1 199w\" width=\"127\" height=\"190\" loading=\"lazy\" data-original-width=\"127\" data-original-height=\"190\" itemprop=\"http:\/\/schema.org\/image\" title=\"IMG_0377\" alt=\"IMG_0377\" style=\"width: 127px; height: 190px;\" \/> <\/a> <\/div> <\/div> <!-- close group --> <div class=\"gallery-group images-1\" style=\"width: 289px; height: 194px;\" data-original-width=\"289\" data-original-height=\"194\" > <div class=\"tiled-gallery-item tiled-gallery-item-large\" itemprop=\"associatedMedia\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"> <a href=\"https:\/\/www.bartola.co.uk\/valves\/2013\/03\/30\/4-65a-se-amplifier-testing-filament-regulators\/img_0384\/\" border=\"0\" itemprop=\"url\"> <meta itemprop=\"width\" content=\"285\"> <meta itemprop=\"height\" content=\"190\"> <img decoding=\"async\" class=\"\" data-attachment-id=\"1406\" data-orig-file=\"https:\/\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0384.jpg\" data-orig-size=\"800,533\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;3.5&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;Canon EOS 600D&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1364671507&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;18&quot;,&quot;iso&quot;:&quot;320&quot;,&quot;shutter_speed&quot;:&quot;0.16666666666667&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"IMG_0384\" data-image-description=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0384.jpg?fit=300%2C199&#038;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0384.jpg?fit=800%2C533&#038;ssl=1\" src=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0384.jpg?w=285&#038;h=190&#038;ssl=1\" srcset=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0384.jpg?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0384.jpg?resize=300%2C199&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0384.jpg?resize=450%2C300&amp;ssl=1 450w\" width=\"285\" height=\"190\" loading=\"lazy\" data-original-width=\"285\" data-original-height=\"190\" itemprop=\"http:\/\/schema.org\/image\" title=\"IMG_0384\" alt=\"46 filament bias and the regulator\" style=\"width: 285px; height: 190px;\" \/> <\/a> <div class=\"tiled-gallery-caption\" itemprop=\"caption description\"> 46 filament bias and the regulator <\/div> <\/div> <\/div> <!-- close group --> <div class=\"gallery-group images-1\" style=\"width: 131px; height: 194px;\" data-original-width=\"131\" data-original-height=\"194\" > <div class=\"tiled-gallery-item tiled-gallery-item-small\" itemprop=\"associatedMedia\" itemscope itemtype=\"http:\/\/schema.org\/ImageObject\"> <a href=\"https:\/\/www.bartola.co.uk\/valves\/2013\/03\/30\/4-65a-se-amplifier-testing-filament-regulators\/img_0387\/\" border=\"0\" itemprop=\"url\"> <meta itemprop=\"width\" content=\"127\"> <meta itemprop=\"height\" content=\"190\"> <img decoding=\"async\" class=\"\" data-attachment-id=\"1407\" data-orig-file=\"https:\/\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0387.jpg\" data-orig-size=\"533,800\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;4&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;Canon EOS 600D&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1364671533&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;18&quot;,&quot;iso&quot;:&quot;400&quot;,&quot;shutter_speed&quot;:&quot;0.16666666666667&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"IMG_0387\" data-image-description=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0387.jpg?fit=199%2C300&#038;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0387.jpg?fit=533%2C800&#038;ssl=1\" src=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0387.jpg?w=127&#038;h=190&#038;ssl=1\" srcset=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0387.jpg?w=533&amp;ssl=1 533w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2013\/03\/IMG_0387.jpg?resize=199%2C300&amp;ssl=1 199w\" width=\"127\" height=\"190\" loading=\"lazy\" data-original-width=\"127\" data-original-height=\"190\" itemprop=\"http:\/\/schema.org\/image\" title=\"IMG_0387\" alt=\"46 Driver regulator\" style=\"width: 127px; height: 190px;\" \/> <\/a> <div class=\"tiled-gallery-caption\" itemprop=\"caption description\"> 46 Driver regulator <\/div> <\/div> <\/div> <!-- close group --> <\/div> <!-- close row --> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>The Rod Coleman Filament Regulators were already tested in the New Year. It seems a long time indeed. Here is a selection of pictures after\u00a0fitting\u00a0the regulators in their\u00a0heat-sinks\u00a0and doing a final test before assembly:<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","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":[150,153,154,152,5],"tags":[780,137,6,370,78],"class_list":["post-1401","post","type-post","status-publish","format-standard","hentry","category-4-65a-se-amplifier-2","category-driver","category-output-stage","category-power-supply","category-valves","tag-4-65a","tag-4-65a-se-amplifier","tag-dht","tag-filament-regulator","tag-rod-coleman-regulator"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2r2tK-mB","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1401","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=1401"}],"version-history":[{"count":2,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1401\/revisions"}],"predecessor-version":[{"id":1409,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/1401\/revisions\/1409"}],"wp:attachment":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/media?parent=1401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/categories?post=1401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/tags?post=1401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}