{"id":12797,"date":"2023-08-30T06:17:30","date_gmt":"2023-08-30T06:17:30","guid":{"rendered":"https:\/\/www2.iled-lights.com\/?p=12797"},"modified":"2023-08-30T09:58:03","modified_gmt":"2023-08-30T09:58:03","slug":"contrast-to-explain-two-dimming-ways-of-white-led","status":"publish","type":"post","link":"https:\/\/www.iled-lights.com\/ms\/contrast-to-explain-two-dimming-ways-of-white-led-a67.html","title":{"rendered":"Kontras Untuk Memaklumkan Dua Cara Peredaran Cahaya LED Putih"},"content":{"rendered":"<p>LED putih boleh diredakan menggunakan dua kaedah utama: pemedaman analog dan modulasi lebar denyut (PWM).<\/p>\n<p><strong>1. Pemedaman Analog:<\/strong> Pemedaman analog melaras kecerahan LED dengan mengubah arus berterusan yang mengalir melaluinya. Kaedah ini melibatkan pengurangan arus untuk menurunkan kecerahan atau meningkatkan arus untuk menaikkan kecerahan. Pemedaman analog berfungsi dengan menyesuaikan voltan merentasi LED atau menggunakan perintang pembatas arus yang berseri dengan LED. Dengan mengubah nilai rintangan atau tahap voltan, arus yang mengalir melalui LED disesuaikan, menghasilkan perubahan kecerahan yang sepadan. Pemedaman analog memberikan kesan pemedaman yang lancar dan berterusan tanpa berkelip yang ketara.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-12799\" src=\"https:\/\/www2.iled-lights.com\/http:\/\/www2.iled-lights.com\/wp-content\/uploads\/2023\/08\/85-1024x563.jpg\" alt=\"&lt;protect-1&gt;Contrast to Explain Two Dimming Ways of White LED&lt;protect-2&gt;\" width=\"1024\" height=\"563\" srcset=\"https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/85-1024x563.jpg 1024w, https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/85-1200x660.jpg 1200w, https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/85-300x165.jpg 300w, https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/85-768x422.jpg 768w, https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/85-1536x844.jpg 1536w, https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/85-18x10.jpg 18w, https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/85.jpg 2016w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p><strong>2. Modulasi Lebar Denyut (PWM):<\/strong> Pemedaman PWM ialah teknik pemedaman digital yang menukar LED secara pantas antara keadaan ON dan OFF pada frekuensi tinggi. Tahap kecerahan dikawal dengan menyesuaikan nisbah masa ON (kitaran tugas) terhadap masa OFF. Sebagai contoh, kitaran tugas yang lebih tinggi (lebih banyak masa ON) menghasilkan keluaran yang lebih cerah, manakala kitaran tugas yang lebih rendah (lebih banyak masa OFF) menghasilkan keluaran yang lebih malap. Frekuensi penukaran biasanya sangat tinggi, selalunya dalam julat kiloherz atau megaheza, menjadikan peralihan ON-OFF tidak dapat dikesan oleh mata manusia. Pemedaman PWM biasa digunakan dalam sistem pencahayaan LED kerana kecekapannya dan membolehkan kawalan yang tepat ke atas tahap kecerahan. Walau bagaimanapun, sesetengah orang mungkin dapat melihat berkelip pada tahap pemedaman rendah atau jika frekuensi PWM terlalu rendah.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-12800\" src=\"https:\/\/www2.iled-lights.com\/http:\/\/www2.iled-lights.com\/wp-content\/uploads\/2023\/08\/86.jpg\" alt=\"&lt;protect-1&gt;Contrast to Explain Two Dimming Ways of White LED&lt;protect-2&gt;\" width=\"804\" height=\"445\" srcset=\"https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/86.jpg 804w, https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/86-300x166.jpg 300w, https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/86-768x425.jpg 768w, https:\/\/www.iled-lights.com\/wp-content\/uploads\/2023\/08\/86-18x10.jpg 18w\" sizes=\"auto, (max-width: 804px) 100vw, 804px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>White LEDs can be dimmed using two main methods: analog dimming and pulse-width modulation (PWM) dimming. 1. Analog Dimming: Analog dimming adjusts the brightness of the LED by varying the continuous current flowing through it. This method involves reducing the current to lower the brightness or increasing it to raise the brightness. Analog dimming works [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":12798,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-12797","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-and-blog"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/posts\/12797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/comments?post=12797"}],"version-history":[{"count":2,"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/posts\/12797\/revisions"}],"predecessor-version":[{"id":12802,"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/posts\/12797\/revisions\/12802"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/media\/12798"}],"wp:attachment":[{"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/media?parent=12797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/categories?post=12797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iled-lights.com\/ms\/wp-json\/wp\/v2\/tags?post=12797"}],"curies":[{"name":"wp &lt; &#039; &#039; &gt; &lt; &gt;","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}