{"id":111,"date":"2015-01-30T21:33:51","date_gmt":"2015-01-30T21:33:51","guid":{"rendered":"http:\/\/dc2wk.schwab-intra.net\/?page_id=111"},"modified":"2015-01-31T12:18:32","modified_gmt":"2015-01-31T11:18:32","slug":"my-second-linear-with-two-gi7b","status":"publish","type":"page","link":"https:\/\/dc2wk.schwab-intra.net\/?page_id=111","title":{"rendered":"My second selfmade linear with two GI7B"},"content":{"rendered":"<p>In February 2013 I start with my second linear with two GI7B. I was finish in May 2013.<\/p>\n<p>I made experiments with microwave oven transformers. The problem is the overheating of this transformers. This transformers was build for impulse usage, and not for a permanent use. So I find a circuit in the internet from a other OM. He control this transformer with a LM393 IC. But you need a big transformer from a Moulinex Microwave oven.<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1922.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-58\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1922-300x200.jpg\" alt=\"IMG_1922\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1922-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1922-1024x683.jpg 1024w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1922.jpg 1536w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>I\u00a0build a cooling case for the two tubes<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1923.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-59\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1923-300x200.jpg\" alt=\"IMG_1923\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1923-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1923-1024x683.jpg 1024w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1923.jpg 1536w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>The back side with the fan on the cooling case<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1924.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-60\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1924-300x200.jpg\" alt=\"IMG_1924\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1924-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1924-1024x683.jpg 1024w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1924.jpg 1536w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>The under side with the input circurit<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1920.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-61\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1920-300x200.jpg\" alt=\"IMG_1920\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1920-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1920-1024x683.jpg 1024w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_1920.jpg 1536w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>The front side with the two tubes and Plexiglas<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2047.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-62\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2047-300x200.jpg\" alt=\"IMG_2047\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2047-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2047-1024x683.jpg 1024w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2047.jpg 1536w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>Inside the linear. The roller induct-or is under the metal slide with the PI-Filter.<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2010_k.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-63\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2010_k-300x200.jpg\" alt=\"IMG_2010_k\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2010_k-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2010_k.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>The front of this linear<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2011.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-64\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2011-300x200.jpg\" alt=\"IMG_2011\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2011-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2011-1024x683.jpg 1024w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2011.jpg 1536w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>The power and header switch<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2013.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-65\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2013-300x200.jpg\" alt=\"IMG_2013\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2013-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2013-1024x683.jpg 1024w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2013.jpg 1536w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>The roller induct-or with counter<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2026.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-66\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2026-300x200.jpg\" alt=\"IMG_2026\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2026-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2026-1024x683.jpg 1024w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2026.jpg 1536w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>The external power supply<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2032.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-67\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2032-300x200.jpg\" alt=\"IMG_2032\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2032-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2032-1024x683.jpg 1024w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2032.jpg 1536w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>Inside the power supply. This is a microwave oven transformer. \u00a0He is controlled by a integrated circuit.<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/SSB-Max.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-68\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/SSB-Max-300x200.jpg\" alt=\"SSB Max\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/SSB-Max-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/SSB-Max.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>The maximum output on 80m SSB.<\/p>\n<p>You can make 800 Watts with this linear on 80m SSB. It works fine for a long time.<\/p>\n<p>Here you can download the schematics for the power supply:\u00a0<a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/netzteil-2GI7.sch_.pdf\">netzteil-2GI7.sch<\/a><\/p>\n<p>Here you can download the schematics\u00a0for the RF part:\u00a0<a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/HF-Teil.-2GI7.pdf\">HF Teil. 2GI7<\/a><\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/Lastrelais-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-71\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/Lastrelais-2-300x230.jpg\" alt=\"Lastrelais 2\" width=\"300\" height=\"230\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/Lastrelais-2-300x230.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/Lastrelais-2.jpg 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>This is the connection plan for the regulated microwave power supply<\/p>\n<p><a href=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/Lastrelais.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-72\" src=\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/Lastrelais-300x200.jpg\" alt=\"Lastrelais\" width=\"300\" height=\"200\" srcset=\"https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/Lastrelais-300x200.jpg 300w, https:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/Lastrelais.jpg 900w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br \/>\n<\/a>This is the control schematics\u00a0for the regulated microwave power supply<\/p>\n<p>It works with a microwave oven transformer, but the power supply make a noise like a beating heard, when he is regulated the voltage \ud83d\ude42<\/p>\n<p><iframe loading=\"lazy\" width=\"584\" height=\"329\" src=\"https:\/\/www.youtube.com\/embed\/pRXm8mZt2uQ?feature=oembed\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p>I sold this linear, after a longer usage.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In February 2013 I start with my second linear with two GI7B. I was finish in May 2013. I made experiments with microwave oven transformers. The problem is the overheating of this transformers. This transformers was build for impulse usage, &hellip; <a href=\"https:\/\/dc2wk.schwab-intra.net\/?page_id=111\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/dc2wk.schwab-intra.net\/index.php?rest_route=\/wp\/v2\/pages\/111"}],"collection":[{"href":"https:\/\/dc2wk.schwab-intra.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dc2wk.schwab-intra.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dc2wk.schwab-intra.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dc2wk.schwab-intra.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=111"}],"version-history":[{"count":5,"href":"https:\/\/dc2wk.schwab-intra.net\/index.php?rest_route=\/wp\/v2\/pages\/111\/revisions"}],"predecessor-version":[{"id":249,"href":"https:\/\/dc2wk.schwab-intra.net\/index.php?rest_route=\/wp\/v2\/pages\/111\/revisions\/249"}],"wp:attachment":[{"href":"https:\/\/dc2wk.schwab-intra.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}