{"id":281,"date":"2015-02-16T09:15:15","date_gmt":"2015-02-16T09:15:15","guid":{"rendered":"http:\/\/crisistech.com\/blog\/?p=281"},"modified":"2019-04-05T17:46:58","modified_gmt":"2019-04-05T17:46:58","slug":"power-supply-automation-board-for-ceramic-power-tetrodes","status":"publish","type":"post","link":"https:\/\/www.crisistech.com\/blog\/?p=281","title":{"rendered":"Power Supply &#038; Automation Board For Ceramic Power Tetrodes"},"content":{"rendered":"<p>Power Supply &amp; Automation Board For Ceramic Power Tetrodes<\/p>\n<p>This article describes a modern stabilized screen-grid power supply<br \/>\nwith MCU that provides adjustable voltage and a good regulation.<br \/>\nIt also includes very effective circuits to protect the tube and<br \/>\nthe rest of the amplifier.<br \/>\nWith some changes to meet specific requirements for screen &#8211; grid voltage and current,<br \/>\nthey can be used as an upgrade for almost any existing tetrode Power Amplifier.<\/p>\n<p>This project protect the tube and amplifier against faults.<br \/>\nIt has been tested in sevarals power amplifiers including<br \/>\nceramic tetroders 4X150 &amp; 4CX250 4CX1500 mid power amplifiers.<\/p>\n<p>Variable Screen power supply Mosfet based with a standard range<br \/>\nbetween 200 to 500Vdc &amp; current at least 80-200Ma<br \/>\nwhich can be limited from 30-200mA VDR Protection included.<br \/>\nVariable Grid power supply with a standard range<br \/>\nfrom 1.5-140Vdc &amp; current over 200mA VDR Protection included.<br \/>\nFilaments Auto range selector between 6V &amp; 26.5V with current sensor.<br \/>\nSWR Protection for Reflective Power Protection.<br \/>\nOver voltage or zero voltage Protection for both Screen &amp; Grid, (High Voltage Cut Off Mode)<br \/>\nBuzzer for acoustic multiple warnings different for each failure.<br \/>\nOptical fault indicators.<br \/>\nReset Button.<br \/>\nService Mode Function for repair, calibration &amp; final test.<br \/>\nFully isolated MCU Circuit from any other tube voltage.<br \/>\nLow Profile Modular PCB with dimensions 249 x 80 x 35mm or 9.80 x 3.15 x 1.38inch<br \/>\n<a href=\"http:\/\/crisistech.com\/blog\/wp-content\/uploads\/2015\/02\/HVPSUSMALL.jpg\"><img loading=\"lazy\" class=\"aligncenter size-thumbnail wp-image-282\" src=\"http:\/\/crisistech.com\/blog\/wp-content\/uploads\/2015\/02\/HVPSUSMALL-150x150.jpg\" alt=\"HVPSUSMALL\" width=\"150\" height=\"150\" \/><\/a><br \/>\nProtype PCB Automation<br \/>\n<a href=\"http:\/\/www.crisistech.com\/blog\/wp-content\/uploads\/2015\/02\/DSC03173.jpg\"><img loading=\"lazy\" class=\"aligncenter size-thumbnail wp-image-466\" src=\"http:\/\/www.crisistech.com\/blog\/wp-content\/uploads\/2015\/02\/DSC03173-150x150.jpg\" alt=\"DSC03173\" width=\"150\" height=\"150\" \/><\/a><br \/>\nThe Automation Inside A Medium Power 50-150Mhz 4X150\/4CX250\/4CX350\/8930 Based VHF Amplifier<\/p>\n<p>This project is for sale, available for manufactures only.<\/p>\n<p>Schematics, Gerbers And BOM List Are Available<\/p>\n<p>This project is for sale, available for manufactures only.<br \/>\nRegards<br \/>\nAkisT &#8211; George Kentar<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Power Supply &amp; Automation Board For Ceramic Power Tetrodes This article describes a modern stabilized screen-grid power supply with MCU that provides adjustable voltage and a good regulation. It also includes very effective circuits to protect the tube and the rest of the amplifier. With some changes to meet specific requirements for screen &#8211; grid [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[9],"tags":[34],"_links":{"self":[{"href":"https:\/\/www.crisistech.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/281"}],"collection":[{"href":"https:\/\/www.crisistech.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.crisistech.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.crisistech.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.crisistech.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=281"}],"version-history":[{"count":19,"href":"https:\/\/www.crisistech.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/281\/revisions"}],"predecessor-version":[{"id":820,"href":"https:\/\/www.crisistech.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/281\/revisions\/820"}],"wp:attachment":[{"href":"https:\/\/www.crisistech.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.crisistech.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.crisistech.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}