{"id":220,"date":"2015-08-29T15:57:00","date_gmt":"2015-08-29T15:57:00","guid":{"rendered":"http:\/\/machineryequipmentonline.com\/video-equipment\/uncategorized\/video-re-productioncolour-receiver-tubes\/"},"modified":"2015-08-29T15:57:00","modified_gmt":"2015-08-29T15:57:00","slug":"video-re-productioncolour-receiver-tubes","status":"publish","type":"post","link":"http:\/\/machineryequipmentonline.com\/video-equipment\/video-re-productioncolour-receiver-tubes\/","title":{"rendered":"Video re-production:Colour receiver tubes"},"content":{"rendered":"<div class=\"fdgpe6a0dbe39e3ef4\" ><script type=\"text\/javascript\">\n\tatOptions = {\n\t\t'key' : '61e5902552e2353963d8d2f1bd1f4a8f',\n\t\t'format' : 'iframe',\n\t\t'height' : 250,\n\t\t'width' : 300,\n\t\t'params' : {}\n\t};\n<\/script>\n<script type=\"text\/javascript\" src=\"\/\/www.highperformanceformat.com\/61e5902552e2353963d8d2f1bd1f4a8f\/invoke.js\"><\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.fdgpe6a0dbe39e3ef4 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.fdgpe6a0dbe39e3ef4 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.fdgpe6a0dbe39e3ef4 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.fdgpe6a0dbe39e3ef4 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.fdgpe6a0dbe39e3ef4 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<h3 align=\"justify\">Colour receiver tubes<\/h3>\n<p align=\"justify\">CRTs used for colour display have three separate guns, one for each pri- mary colour arranged to bombard a screen which is coated with three different types of phosphors, one for each primary colour. The three phosphors are either grouped in triangular delta (3-colour <i>tria<\/i><i>d<\/i>) or in-line formation. When a group of triads is caused to glow at proportioned colour intensities, the eye is deceived into perceiving that the primary colours occur at the same point and so it discerns a spot or a dot corre- sponding to the mix of the three colour intensities.  <\/p>\n<p align=\"justify\">Typical voltages for colour tubes are considerably higher than their mono- chrome counterparts with the final anode voltage in the region of 30 kV.  <\/p>\n<h3 align=\"justify\">Purity<\/h3>\n<p align=\"justify\">For correct colour reproduction, the red, green and blue beams must strike only their own particular phosphors and no other. This is known as <i>purity<\/i>. Purity adjustment involves changing the magnetic field formed by the  <\/p><div class=\"rvgya6a0dbe39e40c9\" ><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-0778475562755157\"\n     crossorigin=\"anonymous\"><\/script>\n<!-- 300x600 television-and-video -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:300px;height:600px\"\n     data-ad-client=\"ca-pub-0778475562755157\"\n     data-ad-slot=\"6549443290\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.rvgya6a0dbe39e40c9 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.rvgya6a0dbe39e40c9 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.rvgya6a0dbe39e40c9 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.rvgya6a0dbe39e40c9 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.rvgya6a0dbe39e40c9 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"kybiq6a0dbe39e3ff8\" ><script type=\"text\/javascript\">\n\tatOptions = {\n\t\t'key' : '0c1eb4c533eaedb7b996f49a5a4983a9',\n\t\t'format' : 'iframe',\n\t\t'height' : 300,\n\t\t'width' : 160,\n\t\t'params' : {}\n\t};\n<\/script>\n<script type=\"text\/javascript\" src=\"\/\/www.highperformanceformat.com\/0c1eb4c533eaedb7b996f49a5a4983a9\/invoke.js\"><\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.kybiq6a0dbe39e3ff8 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.kybiq6a0dbe39e3ff8 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.kybiq6a0dbe39e3ff8 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.kybiq6a0dbe39e3ff8 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.kybiq6a0dbe39e3ff8 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n\n<p align=\"justify\"><a href=\"http:\/\/lh3.googleusercontent.com\/-pgyzeAsZ7bY\/VeHWGGCBtkI\/AAAAAAAB4EU\/Vz7B-RrR_II\/s1600-h\/Video-re-production-05882.jpg\"><img decoding=\"async\" loading=\"lazy\" style=\"background-image: none; border-right-width: 0px; margin: 0px auto; padding-left: 0px; padding-right: 0px; display: block; float: none; border-top-width: 0px; border-bottom-width: 0px; border-left-width: 0px; padding-top: 0px\" title=\"Video re-production-0588\" border=\"0\" alt=\"Video re-production-0588\" src=\"http:\/\/lh3.googleusercontent.com\/-n4V8dEtoeQg\/VeHWTbGxcmI\/AAAAAAAB4FM\/mvhPSzFCWwA\/Video-re-production-0588_thumb.jpg?imgmax=800\" width=\"391\" height=\"433\" \/><\/a>  <\/p>\n<p align=\"justify\">scan coils both in terms of strength and direction to move the beams so that they strike the correct phosphor coating of the screen. This is achieved by the use of a pair of two-pole ring magnets placed along the neck of the tube and a rotating disk magnet as shown in Figure 9.8.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Colour receiver tubes CRTs used for colour display have three separate guns, one for each pri- mary colour arranged to bombard a screen which is coated with three different types of phosphors, one for each primary colour. The three phosphors are either grouped in triangular delta (3-colour triad) or in-line formation. When a group of [&hellip;]<br \/><a href=\"http:\/\/machineryequipmentonline.com\/video-equipment\/video-re-productioncolour-receiver-tubes\/\" class=\"more-link\" >Continue reading&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"aioseo_notices":[],"views":491,"_links":{"self":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/220"}],"collection":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/comments?post=220"}],"version-history":[{"count":0,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/220\/revisions"}],"wp:attachment":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/media?parent=220"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/categories?post=220"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/tags?post=220"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}