{"id":11430,"date":"2016-09-20T20:12:42","date_gmt":"2016-09-21T03:12:42","guid":{"rendered":"http:\/\/rustybolt.info\/wordpress\/?p=11430"},"modified":"2016-11-19T08:50:38","modified_gmt":"2016-11-19T16:50:38","slug":"2016-05-20-tbd","status":"publish","type":"post","link":"https:\/\/rustybolt.info\/wordpress\/?p=11430","title":{"rendered":"2016-09-20 tbd"},"content":{"rendered":"<p>from a comment I added to this YouTube video<br \/>\n<a href=\"https:\/\/youtu.be\/GCh2LVHUavQ\">https:\/\/youtu.be\/GCh2LVHUavQ<\/a><\/p>\n<p>The main difference between a power transformer and an audio transformer is the way the E and I laminations of the core are arranged.  The power transformer has an E on the left and I on the right of the first layer, then an I on the left and an E on the right of the second layer and so on, so alternating layers have E or I on the left.  This makes the core almost like a solid block and the transformer is optimized for 60 or 50 Hz.<\/p>\n<p>The audio transformer has all E&#8217;s bundled together, and all I&#8217;s bundled together, and they are assembled and held together with a piece of thick paper between the E&#8217;s and I&#8217;s. This air gap created by the paper optimizes the transformer for a wide band of audio frequencies.<\/p>\n<p>You should try to take one of the power transformers apart.  The first E and I laminations is very hard to get out, but after that it&#8217;s easier.  A rubber mallet helps a lot but don&#8217;t break the windings.  Then you can put it back together with the paper and now you have a wider band transformer.  But the way you have been doing it works, for noncritical use.<\/p>\n<p>The big MOT has too much core loss.  Save it to make a spot welder.  \ud83d\ude42<br \/>\nGreat video.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>from a comment I added to this YouTube video https:\/\/youtu.be\/GCh2LVHUavQ The main difference between a power transformer and an audio transformer is the way the E and I laminations of the core are arranged. The power transformer has an E on the left and I on the right of the first layer, then an I<a href=\"https:\/\/rustybolt.info\/wordpress\/?p=11430\"> <\/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":[251],"tags":[258,259,260,54],"class_list":["post-11430","post","type-post","status-publish","format-standard","hentry","category-transformer-transformers","tag-crystal-radio","tag-earphones","tag-impedance-matching","tag-transformer"],"_links":{"self":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/11430","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=11430"}],"version-history":[{"count":3,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/11430\/revisions"}],"predecessor-version":[{"id":11655,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/11430\/revisions\/11655"}],"wp:attachment":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11430"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11430"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11430"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}