{"id":2587,"date":"2014-06-04T18:21:49","date_gmt":"2014-06-04T15:21:49","guid":{"rendered":"http:\/\/www.Devrearsivi.com\/?p=2587"},"modified":"2014-06-04T18:23:21","modified_gmt":"2014-06-04T15:23:21","slug":"led-lerin-ac-calismalari","status":"publish","type":"post","link":"https:\/\/devrearsivi.com\/led-lerin-ac-calismalari\/","title":{"rendered":"Led &#8216;lerin AC \u00c7al\u0131\u015fmalar\u0131"},"content":{"rendered":"<p style=\"color: #000000;\"><img decoding=\"async\" class=\" wp-image-2590 alignleft\" src=\"http:\/\/www.Devrearsivi.com\/wp-content\/uploads\/2014\/06\/ac_led-300x292.jpg\" alt=\"ac_led\" width=\"175\" height=\"171\" srcset=\"https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/ac_led-300x292.jpg 300w, https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/ac_led-55x55.jpg 55w, https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/ac_led.jpg 385w\" sizes=\"(max-width: 175px) 100vw, 175px\" \/>Led &#8216;ler, AC ile \u00e7al\u0131\u015fan devrelerdeki ikaz lambalar\u0131n\u0131n bile yerini alabilmektedirler. AC sinyalin bir sayk\u0131l\u0131nda iletimde olan Led, ikinci sayk\u0131l\u0131nda ters y\u00f6nde polarlan\u0131r ve off durumuna ge\u00e7er.<\/p>\n<p style=\"color: #000000;\">Bu durumda Led \u00fczerinde olu\u015fan ters y\u00f6ndeki gerilimin Led &#8216;in ters dayanma geriliminden fazla olmas\u0131 halinde Led tahrip olaca\u011f\u0131ndan gerekli \u00f6nlemler al\u0131nmal\u0131d\u0131r. Bunun i\u00e7in Led &#8216;e paralel olarak ters y\u00f6nde normal bir diyot ba\u011flanmas\u0131 kafidir. \u015eekil 6.a &#8216;da bu ba\u011flant\u0131 \u015fekli g\u00f6sterilmi\u015ftir.<\/p>\n<p style=\"color: #000000;\">Negatif yar\u0131m sayk\u0131l\u0131nda bu diyot iletime ge\u00e7erek \u00fczerinde olu\u015facak 0,7 Voltluk iletim gerilimi, Led &#8216;in emniyetle kullan\u0131lmas\u0131n\u0131 sa\u011flayacakt\u0131r.<\/p>\n<table style=\"color: #000000;\" border=\"0\" width=\"65%\" align=\"left\">\n<tbody>\n<tr>\n<td width=\"50%\" height=\"251\"><img decoding=\"async\" class=\"alignnone size-full wp-image-2588\" src=\"http:\/\/www.Devrearsivi.com\/wp-content\/uploads\/2014\/06\/sekil6b.jpg\" alt=\"sekil6b\" width=\"192\" height=\"175\" \/><br \/>\n\u015eekil 6b<\/td>\n<td width=\"50%\"><img decoding=\"async\" class=\"alignnone size-full wp-image-2589\" src=\"http:\/\/www.Devrearsivi.com\/wp-content\/uploads\/2014\/06\/sekil6a.jpg\" alt=\"sekil6a\" width=\"160\" height=\"175\" \/><br \/>\n\u015eekil 6a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"color: #000000;\">Led &#8216;leri korumak i\u00e7in kullan\u0131lan di\u011fer bir y\u00f6ntemde, Led ile seri olarak ters dayanma gerilimi kaynak geriliminden daha b\u00fcy\u00fck olan bir diyot ba\u011flamakt\u0131r. Bu durmda \u015eekil 6.b &#8216;de g\u00f6sterilmektedir.<\/p>\n<p style=\"color: #000000;\">\u0130lk metodun avantaj\u0131, Led \u00fczerine 0,7 Volttan daha fazla ters gerilim d\u00fc\u015fememesi nedeniyle Led &#8216;in a\u015f\u0131r\u0131 ters gerilimden dolay\u0131 bir tehlikeye maruz kalmas\u0131n\u0131n s\u00f6z konusu olmamas\u0131d\u0131r. Ancak seri direncin iki misli g\u00fc\u00e7 harcamas\u0131 gerekmektedir.<\/p>\n<p style=\"color: #000000;\">Her iki durumda da, Led sadece bir sayk\u0131l boyunca iletimde kalaca\u011f\u0131 i\u00e7in averaj Led ak\u0131m\u0131, hesaplanan diren\u00e7 de\u011feriyle bulunan\u0131n yar\u0131s\u0131 kadar olacakt\u0131r. Bu durumu g\u00f6z\u00f6n\u00fcne alarak gerekli diren\u00e7 de\u011feri, a\u015fa\u011f\u0131daki form\u00fclden hesaplanabilir.<\/p>\n<p style=\"color: #000000;\">R = U<sub>RMS<\/sub>\u00a0&#8211; U<sub>f<\/sub>\u00a0\/ 2I<\/p>\n<p><span style=\"color: #000000;\">U<\/span><sub style=\"color: #000000;\">RMS\u00a0<\/sub><span style=\"color: #000000;\">: AC \u015febeke gerilimi<\/span><br style=\"color: #000000;\" \/><span style=\"color: #000000;\">U<\/span><sub style=\"color: #000000;\">f\u00a0<\/sub><span style=\"color: #000000;\">: Diyot iletim gerilimi<\/span><br style=\"color: #000000;\" \/><span style=\"color: #000000;\">I : \u0130stenen averaj ak\u0131m de\u011feri<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Led &#8216;ler, AC ile \u00e7al\u0131\u015fan devrelerdeki ikaz lambalar\u0131n\u0131n bile yerini alabilmektedirler. AC sinyalin bir sayk\u0131l\u0131nda&#8230;<\/p>\n","protected":false},"author":1,"featured_media":2591,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[842,1013],"aioseo_notices":[],"featured_image_urls":{"full":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false],"thumbnail":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1-150x150.jpg",150,150,true],"medium":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false],"medium_large":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false],"large":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false],"1536x1536":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false],"2048x2048":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false],"covernews-slider-full":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false],"covernews-slider-center":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false],"covernews-featured":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false],"covernews-medium":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false],"covernews-medium-square":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2014\/06\/images-1.jpg",272,185,false]},"author_info":{"display_name":"Ferhat \u00c7elik","author_link":"https:\/\/devrearsivi.com\/author\/94ferhat\/"},"category_info":"<a href=\"https:\/\/devrearsivi.com\/category\/malzeme-bilgisi\/\" rel=\"category tag\">Malzeme Bilgisi<\/a>","tag_info":"Malzeme Bilgisi","comment_count":"2","_links":{"self":[{"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/posts\/2587"}],"collection":[{"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/comments?post=2587"}],"version-history":[{"count":2,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/posts\/2587\/revisions"}],"predecessor-version":[{"id":2593,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/posts\/2587\/revisions\/2593"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/media\/2591"}],"wp:attachment":[{"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/media?parent=2587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/categories?post=2587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/tags?post=2587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}