{"id":57,"date":"2015-09-03T15:44:00","date_gmt":"2015-09-03T15:44:00","guid":{"rendered":"http:\/\/machineryequipmentonline.com\/video-equipment\/uncategorized\/control-systemsir-receiver-and-decoder\/"},"modified":"2015-09-03T15:44:00","modified_gmt":"2015-09-03T15:44:00","slug":"control-systemsir-receiver-and-decoder","status":"publish","type":"post","link":"http:\/\/machineryequipmentonline.com\/video-equipment\/control-systemsir-receiver-and-decoder\/","title":{"rendered":"CONTROL SYSTEMS:IR RECEIVER AND DECODER."},"content":{"rendered":"<div class=\"xrxfl6a0dc76f96ae1\" ><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.xrxfl6a0dc76f96ae1 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.xrxfl6a0dc76f96ae1 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.xrxfl6a0dc76f96ae1 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.xrxfl6a0dc76f96ae1 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.xrxfl6a0dc76f96ae1 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<h3 align=\"justify\">IR RECEIVER AND DECODER<\/h3>\n<p align=\"justify\">The infra-red RC signals are detected by a photodiode whose stand- ing current is modulated by the incoming light pulses. A sharply tuned  <\/p>\n<p align=\"justify\"><a href=\"http:\/\/lh3.googleusercontent.com\/-V4MBN2AnoB0\/Vehq2k_tQQI\/AAAAAAAB7a4\/ITDQ2rbUxq4\/s1600-h\/CONTROL-SYSTEMS-02582.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=\"CONTROL SYSTEMS-0258\" border=\"0\" alt=\"CONTROL SYSTEMS-0258\" src=\"http:\/\/lh3.googleusercontent.com\/-0HPiV6H5TkY\/Vehq5AATY8I\/AAAAAAAB7bI\/GlrTX0vWY-M\/CONTROL-SYSTEMS-0258_thumb.jpg?imgmax=800\" width=\"244\" height=\"233\" \/><\/a>  <\/p><div class=\"hyspm6a0dc76f96c0e\" ><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.hyspm6a0dc76f96c0e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.hyspm6a0dc76f96c0e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.hyspm6a0dc76f96c0e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.hyspm6a0dc76f96c0e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.hyspm6a0dc76f96c0e {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"zwzdw6a0dc76f96b6f\" ><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.zwzdw6a0dc76f96b6f {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.zwzdw6a0dc76f96b6f {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.zwzdw6a0dc76f96b6f {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.zwzdw6a0dc76f96b6f {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.zwzdw6a0dc76f96b6f {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n\n<p align=\"justify\">\ufb01lter immediately follows the diode to reject noise and out-of- band (38 kHz) components. Next comes a preampli\ufb01er whose main characteristic is its very wide a.g.c. range of about 140 dB, required to cope with the large variation of IR signal level which may be encountered.  <\/p>\n<p align=\"justify\">In simple receivers the coded message is simply converted into parallel data and decoded to give a series of output lines, each of which change state when the corresponding button of the remote handset is pressed. Such outputs are used for channel selection; for off- or standby-switching via a solenoid on the mains switch or a \u2018pull-down\u2019 line to the PSU; and for control of such analogue functions as brightness, colour and volume, where the appropriate control line feeds an interface IC whose PWM output is varied in respect of duty-cycle for as long as the command is received, and held constant thereafter. Integration of this PWM pulse train in an RC circuit renders a d.c. control voltage for application to the voltage-controlled attenuators (VCAs) within the signal-processing chips described in earlier chapters, e.g. colour decoder.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>IR RECEIVER AND DECODER The infra-red RC signals are detected by a photodiode whose stand- ing current is modulated by the incoming light pulses. A sharply tuned \ufb01lter immediately follows the diode to reject noise and out-of- band (38 kHz) components. Next comes a preampli\ufb01er whose main characteristic is its very wide a.g.c. range of [&hellip;]<br \/><a href=\"http:\/\/machineryequipmentonline.com\/video-equipment\/control-systemsir-receiver-and-decoder\/\" 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":626,"_links":{"self":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/57"}],"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=57"}],"version-history":[{"count":0,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/57\/revisions"}],"wp:attachment":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/media?parent=57"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/categories?post=57"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/tags?post=57"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}