{"id":8234,"date":"2020-02-10T18:44:23","date_gmt":"2020-02-10T18:44:23","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=8234"},"modified":"2020-02-10T18:44:23","modified_gmt":"2020-02-10T18:44:23","slug":"mini-hybrid-mu-follower-board-test","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2020\/02\/10\/mini-hybrid-mu-follower-board-test\/","title":{"rendered":"Mini Hybrid Mu-follower board test"},"content":{"rendered":"<div>\u00a0I had a \u00a0go first at a mini-gyrator board using SMD. Blimey, it\u2019s hard work to get all these crammed into such a small footprint.<\/div>\n<div>I did a quick test with a D3a and worked fine at 100V\/10mA (low voltage of course). It was +35dB flat up until a couple of Mhz. Even the over-current LED works!<\/div>\n<div><a href=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2020\/02\/IMG_1204.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"8235\" data-permalink=\"https:\/\/www.bartola.co.uk\/valves\/2020\/02\/10\/mini-hybrid-mu-follower-board-test\/img_1204\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2020\/02\/IMG_1204.jpg?fit=1184%2C1280&amp;ssl=1\" data-orig-size=\"1184,1280\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;1.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 8&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1581358985&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;3.99&quot;,&quot;iso&quot;:&quot;25&quot;,&quot;shutter_speed&quot;:&quot;0.0083333333333333&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"IMG_1204\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2020\/02\/IMG_1204.jpg?fit=840%2C908&amp;ssl=1\" class=\"size-large wp-image-8235 aligncenter\" src=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2020\/02\/IMG_1204-947x1024.jpg?resize=840%2C908\" alt=\"\" width=\"840\" height=\"908\" srcset=\"https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2020\/02\/IMG_1204.jpg?resize=947%2C1024&amp;ssl=1 947w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2020\/02\/IMG_1204.jpg?resize=278%2C300&amp;ssl=1 278w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2020\/02\/IMG_1204.jpg?resize=768%2C830&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.bartola.co.uk\/valves\/wp-content\/uploads\/2020\/02\/IMG_1204.jpg?w=1184&amp;ssl=1 1184w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/a><\/div>\n<div>Footprint is as small as you can get: 45mm x 25mm \ud83d\ude42<\/div>\n<div><\/div>\n<div>More to report later!<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0I had a \u00a0go first at a mini-gyrator board using SMD. Blimey, it\u2019s hard work to get all these crammed into such a small footprint. I did a quick test with a D3a and worked fine at 100V\/10mA (low voltage of course). It was +35dB flat up until a couple of Mhz. Even the over-current &hellip; <a href=\"https:\/\/www.bartola.co.uk\/valves\/2020\/02\/10\/mini-hybrid-mu-follower-board-test\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Mini Hybrid Mu-follower board test&#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_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":[12,911,156],"tags":[875,1301,1299,1298,1300],"class_list":["post-8234","post","type-post","status-publish","format-standard","hentry","category-dht-valves","category-gyrator-pcb","category-pre-amplifier-valves","tag-gyrator-pcb","tag-gyrator-smd","tag-mini-hybrid-mu-follower","tag-mini-gyrator-pcb","tag-smd"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2r2tK-28O","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/8234","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=8234"}],"version-history":[{"count":1,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/8234\/revisions"}],"predecessor-version":[{"id":8236,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/8234\/revisions\/8236"}],"wp:attachment":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/media?parent=8234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/categories?post=8234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/tags?post=8234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}