{"id":13016,"date":"2018-07-23T23:34:21","date_gmt":"2018-07-24T06:34:21","guid":{"rendered":"https:\/\/rustybolt.info\/wordpress\/?p=13016"},"modified":"2018-07-24T06:35:15","modified_gmt":"2018-07-24T13:35:15","slug":"2018-07-24-boys-radio-reflex-schematic-2","status":"publish","type":"post","link":"https:\/\/rustybolt.info\/wordpress\/?p=13016","title":{"rendered":"2018-07-24 &#8220;Boy&#8217;s Radio&#8221; Reflex Schematic"},"content":{"rendered":"<p>From FB group Building Transistor Radios<\/p>\n<p>Willie Barnett<br \/>\nI see from the schematic that this is a reflex regen.  They did something else that is very seldom seen, the volume control acts not as a normal variable voltage divider, but instead as a variable shunt load across the secondary of the driver transformer.  This is to provide a load at audio frequencies to the reflex stage.  It&#8217;s not a good design because the secondary of the driver transformer is nearly shorted at low volume levels.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2018\/07\/FB_IMG_1532439049573.jpg\" class=\"alignnone wp-image-13013 size-full\" width=\"288\" height=\"207\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>From FB group Building Transistor Radios Willie Barnett I see from the schematic that this is a reflex regen. They did something else that is very seldom seen, the volume control acts not as a normal variable voltage divider, but instead as a variable shunt load across the secondary of the driver transformer. This is<a href=\"https:\/\/rustybolt.info\/wordpress\/?p=13016\"> <\/p>\n<p> (Read More&#8230;)<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[311,7,262,342,343,296],"tags":[],"class_list":["post-13016","post","type-post","status-publish","format-standard","hentry","category-am-band","category-radio-frequency","category-receiver","category-reflex","category-regen","category-schematics"],"_links":{"self":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/13016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13016"}],"version-history":[{"count":1,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/13016\/revisions"}],"predecessor-version":[{"id":13017,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/13016\/revisions\/13017"}],"wp:attachment":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}