{"id":359,"date":"2013-06-30T21:39:17","date_gmt":"2013-06-30T18:39:17","guid":{"rendered":"http:\/\/devrearsiv.com\/?p=359"},"modified":"2013-09-14T21:04:56","modified_gmt":"2013-09-14T18:04:56","slug":"12v-dimmer-devresi","status":"publish","type":"post","link":"https:\/\/devrearsivi.com\/12v-dimmer-devresi\/","title":{"rendered":"12V Dimmer Devresi"},"content":{"rendered":"

 <\/p>\n

12V lambalar i\u00e7in bir dimmer devresi.<\/span><\/strong><\/p>\n

Devre dizayn\u0131nda eleman say\u0131s\u0131n\u0131 olabildi\u011fince az tutmak istedim. Devre, 555 Timer ile yap\u0131lm\u0131\u015f, basit bir PWM – Pulse Width Modulation) Darbe Geni\u015flik Mod\u00fclasyonu devresidir. yap\u0131lmas\u0131 son derece kolayd\u0131r.<\/span><\/span><\/p>\n

B<\/span>en kokpit ayd\u0131nlatmas\u0131nda 10W halojen ampul ile kullan\u0131yorum. 100 Watt’a kadar ampullerin, \u0131\u015f\u0131k \u015fiddetini tam s\u00f6n\u00fckten, en parla\u011fa kadar kesintisiz olarak ayarlaman\u0131z\u0131 sa\u011flar. I\u015f\u0131k \u015fiddetini 50K de\u011ferindeki P1 potansiyometresini ayarl\u0131yarak de\u011fi\u015ftirebilirsiniz. 10W’dan \u00e7ok daha g\u00fc\u00e7l\u00fc bir ampul ile kulanacaksan\u0131z FET’i (IRFZ44’\u00fc) bir so\u011futucuya ba\u011flaman\u0131z gerekir. Bu durumda, ayr\u0131ca Ak\u00fc (+) dan Voltaj reg\u00fclat\u00f6r\u00fcne (LM7809), lambaya ve FET’e (IRFZ44), Ak\u00fc-‘den yine FET’e giden ba\u011flant\u0131larda \u00e7ok ince kablo kullanmaman\u0131z gerekir.<\/span><\/span><\/p>\n

A<\/span>\u015fa\u011f\u0131da, devre \u015femas\u0131n\u0131 ve kritik elemanlar\u0131n bacak ba\u011flant\u0131lar\u0131n\u0131 g\u00f6rmektesiniz.<\/span><\/span><\/strong><\/em><\/p>\n

\"dimmer\"<\/span><\/a><\/span><\/p>\n

D<\/span><\/strong>evre olabildi\u011fince basitir. 555 timer entegresi kare dalga \u00fcreteci olarak kullan\u0131lm\u0131\u015ft\u0131r. P1 potasiyometresi ile darbe geni\u015fliklerini de\u011fi\u015ftirme olana\u011f\u0131 sa\u011flar ve \u00e7\u0131k\u0131\u015f FET’in gate’ine verilerek, darbe s\u00fcresine ba\u011fl\u0131 olarak anahtarlama yapmas\u0131 olas\u0131 k\u0131l\u0131nm\u0131\u015ft\u0131r.<\/span><\/span><\/p>\n

PWM (darbe geni\u015flik modulasyonu) hakk\u0131nda genel bilgi: \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\"kare\"<\/span><\/em><\/strong><\/span><\/p>\n

S<\/strong>a\u011fdaki \u015fekilde kare dalgan\u0131n Voltaj-Zaman e\u011frisini g\u00f6rmektesiniz.<\/span><\/p>\n

Dalga periyodu (P<\/strong>) y\u00fcksek voltaj ve s\u0131f\u0131r voltaj s\u00fcrelerini toplam\u0131d\u0131r.<\/span><\/p>\n

Darbe geni\u015fli\u011fi (pw<\/strong>) ise sadece y\u00fcksek voltaj s\u00fcresidir ve\u00a0pw<\/strong>‘nin\u00a0P<\/strong>‘ye y\u00fczde oran\u0131 olarak ifade edilir (\u015fekilde kabaca %40 gibi g\u00f6z\u00fckmekte). Devremizdeki potansiyometre (D1 diodunun da deste\u011fiyle) periyodu sabit tutarak darbe geni\u015fli\u011fini de\u011fi\u015ftirebilmemize olanak verir. Dalgan\u0131n toplam voltaj\u0131\u00a0pw<\/strong>\u00a0ile do\u011fru orant\u0131l\u0131d\u0131r. B\u00f6ylece lambaya uygulanan toplam voltaj de\u011fi\u015ftirilmi\u015f olur. Lamban\u0131n darbelerle yan\u0131p darbe aralar\u0131nda s\u00f6nmesi beklenir. Flamanl\u0131 lambalarda flaman aralarda yeterince so\u011fuyamayaca\u011f\u0131ndan bu m\u00fcmk\u00fcn olmaz. Lamba yerinde bir LED olsa yan\u0131p s\u00f6necektir ama frekans o kadar y\u00fcksektir ki g\u00f6z bunu farkedemez.\u00a0<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\"pwm\"<\/span><\/span><\/p>\n

 <\/p>\n

PWM Devreleri sadece dimmer ama\u00e7l\u0131 kullan\u0131lmaz. DC Motor h\u0131z kontrolu, DC-DC g\u00fc\u00e7 konvert\u00f6rleri, Seri data transferleri gibi pek \u00e7ok alanda yer al\u0131rlar. 555 yan\u0131nda transist\u00f6r, TTL ve CMOS entegrelerle de pek \u00e7ok PWM devresi ger\u00e7ekle\u015ftirdik.<\/span><\/strong><\/em><\/p>\n

 <\/p>\n

\u0130yi \u00c7al\u0131\u015fmalar \ud83d\ude42<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

  12V lambalar i\u00e7in bir dimmer devresi. Devre dizayn\u0131nda eleman say\u0131s\u0131n\u0131 olabildi\u011fince az tutmak istedim….<\/p>\n","protected":false},"author":1,"featured_media":360,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18,12],"tags":[92,30,93],"aioseo_notices":[],"featured_image_urls":{"full":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer.gif",416,620,false],"thumbnail":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer-150x150.gif",150,150,true],"medium":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer-201x300.gif",201,300,true],"medium_large":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer.gif",416,620,false],"large":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer.gif",416,620,false],"1536x1536":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer.gif",416,620,false],"2048x2048":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer.gif",416,620,false],"covernews-slider-full":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer.gif",416,620,false],"covernews-slider-center":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer.gif",335,500,false],"covernews-featured":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer.gif",416,620,false],"covernews-medium":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer.gif",228,340,false],"covernews-medium-square":["https:\/\/devrearsivi.com\/wp-content\/uploads\/2013\/06\/dimmer.gif",168,250,false]},"author_info":{"display_name":"Ferhat \u00c7elik","author_link":"https:\/\/devrearsivi.com\/author\/94ferhat\/"},"category_info":"Basit Elektronik Devreler<\/a> Elektronik Devreler<\/a>","tag_info":"Elektronik Devreler","comment_count":"1","_links":{"self":[{"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/posts\/359"}],"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=359"}],"version-history":[{"count":5,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/posts\/359\/revisions"}],"predecessor-version":[{"id":1040,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/posts\/359\/revisions\/1040"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/media\/360"}],"wp:attachment":[{"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/media?parent=359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/categories?post=359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devrearsivi.com\/wp-json\/wp\/v2\/tags?post=359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}