{"id":44320,"date":"2026-02-27T07:15:11","date_gmt":"2026-02-26T23:15:11","guid":{"rendered":"https:\/\/tecolite.com\/?p=44320"},"modified":"2026-09-02T16:27:16","modified_gmt":"2026-09-02T08:27:16","slug":"pwm%e9%a2%91%e7%8e%87-led%e9%97%aa%e7%83%81","status":"publish","type":"post","link":"https:\/\/tecolite.com\/zh\/pwm-frequency-led-flicker\/","title":{"rendered":"PWM Frequency and LED Flicker: What Specifiers Should Check Before Buying"},"content":{"rendered":"<h1>PWM Frequency and LED Flicker: What Specifiers Should Check Before Buying<\/h1>\n<p class=\"teco-article-updated\"><em>Updated: September 3, 2026<\/em><\/p>\n<p><!-- tecolite-seo-refresh-20260903 --><\/p>\n<section class=\"teco-seo-summary\">\n<p><strong>PWM dimming controls LED brightness by switching light output on and off rapidly.<\/strong> If the PWM frequency is too low, users may see flicker, cameras may show banding, and dimmed light can feel unstable. For commercial LED spotlights, the safe choice is not only a high frequency number; engineers should also check dimming depth, driver topology, load compatibility, waveform stability and flicker measurements at low dimming levels.<\/p>\n<table>\n<thead>\n<tr>\n<th>Check item<\/th>\n<th>Why it matters<\/th>\n<th>Procurement note<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>PWM\u9891\u7387<\/td>\n<td>Affects visible flicker and camera banding<\/td>\n<td>Ask for measurement conditions, not only a headline number<\/td>\n<\/tr>\n<tr>\n<td>\u767e\u5206\u6bd4\u95ea\u70c1<\/td>\n<td>Shows modulation depth<\/td>\n<td>Check at full output and deep dimming levels<\/td>\n<\/tr>\n<tr>\n<td>Driver and dimmer match<\/td>\n<td>Determines stability, buzz and low-end dimming<\/td>\n<td>Test with the actual TRIAC, 0-10V, DALI or PWM control system<\/td>\n<\/tr>\n<tr>\n<td>\u5e94\u7528<\/td>\n<td>Retail, hotel, camera and task areas are less tolerant<\/td>\n<td>Use sample testing before volume orders<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Send Tecolite the dimmer model, input voltage, target dimming range and flicker requirement so the spotlight and driver combination can be checked before sample testing.<\/p>\n<\/section>\n<h2>\u5f15\u8a00<\/h2>\n<p>\u201c\u4f55\u79cdPWM\u9891\u7387\u53ef\u5b9e\u73b0\u65e0\u9891\u95ea\uff1f\u201d\u662fLED\u89c4\u683c\u4e2d\u6700\u5e38\u89c1\u7684\u6280\u672f\u95ee\u9898\u4e4b\u4e00\u3002\u5728\u5546\u4e1a\u73af\u5883\u4e2d\u2014\u2014\u9152\u5e97\u3001\u529e\u516c\u5ba4\u3001\u96f6\u552e\u3001\u533b\u7597\u4fdd\u5065\u2014\u2014<strong>PWM\u8c03\u5149\u9891\u7387<\/strong> \u76f4\u63a5\u5f71\u54cd <strong>LED\u95ea\u70c1<\/strong>, <strong>\u9891\u95ea\u53ef\u89c1\u5ea6<\/strong>, \uff0c\u4ee5\u53ca\u957f\u671f\u89c6\u89c9\u8212\u9002\u5ea6\u3002.<\/p>\n<p>\u672c\u6587\u63d0\u4f9b\u5de5\u7a0b\u7cbe\u786e\u7684\u89e3\u91ca\uff1a<\/p>\n<ul>\n<li>\u5982\u4f55 <strong>PWM\u8c03\u5149\u9891\u7387<\/strong> \u5728LED\u9a71\u52a8\u5668\u4e2d\u5de5\u4f5c<\/li>\n<li>LED\u95ea\u70c1\u5728\u4f55\u79cd\u9891\u7387\u4e0b\u53d8\u5f97\u4e0d\u53ef\u611f\u77e5<\/li>\n<li>\u5982\u4f55 <strong>\u767e\u5206\u6bd4\u95ea\u70c1<\/strong> \u548c <strong>\u8c03\u5236\u6df1\u5ea6<\/strong> \u88ab\u8ba1\u7b97<\/li>\n<li>\u4ec0\u4e48 <strong>IEEE Std 1789-2015<\/strong> \u5b9e\u9645\u5efa\u8bae<\/li>\n<li>\u91c7\u8d2d\u8fc7\u7a0b\u4e2d\u5982\u4f55\u8bc4\u4f30\u9a71\u52a8\u5668\u89c4\u683c<\/li>\n<\/ul>\n<p>\u6240\u6709\u6280\u672f\u53c2\u8003\u5747\u6765\u81ea\u6743\u5a01\u6765\u6e90\uff0c\u5305\u62ec <strong>\u7535\u6c14\u4e0e\u7535\u5b50\u5de5\u7a0b\u5e08\u5b66\u4f1a\uff08IEEE\uff09<\/strong>, \uff0c <strong>\u7167\u660e\u5de5\u7a0b\u5b66\u4f1a\uff08IES\uff09<\/strong>, \uff0c <strong>\u56fd\u9645\u7167\u660e\u59d4\u5458\u4f1a\uff08CIE\uff09<\/strong>, \uff0c\u4ee5\u53ca <strong>\u7f8e\u56fd\u80fd\u6e90\u90e8\uff08DOE\uff09<\/strong>.<\/p>\n<hr \/>\n<h2>LED\u9a71\u52a8\u5668\u4e2d\u7684PWM\u8c03\u5149\u9891\u7387\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/tecolite.com\/wp-content\/uploads\/2026\/03\/rigol-oscilloscope-waveform-display.webp\" alt=\"Rigol\u793a\u6ce2\u5668\u5c4f\u5e55\u663e\u793a\u5e26\u6709\u9ec4\u8272\u548c\u7eff\u8272\u8f68\u8ff9\u7684\u53cc\u901a\u9053\u65b9\u6ce2\u4fe1\u53f7\uff0c\u9891\u7387\u4e3a23.58 kHz\uff0c\u5468\u671f\u4e3a42.4\u5fae\u79d2\u3002.\" \/><\/p>\n<p><strong>\u8109\u51b2\u5bbd\u5ea6\u8c03\u5236\uff08PWM\uff09<\/strong> \u901a\u8fc7\u4ee5\u56fa\u5b9a\u9891\u7387\u5b8c\u5168\u5f00\u542f\u548c\u5173\u95edLED\u7535\u6d41\u5e76\u8c03\u6574\u5360\u7a7a\u6bd4\u6765\u63a7\u5236LED\u4eae\u5ea6\u3002\u4eba\u773c\u4f1a\u6574\u5408\u8fd9\u4e9b\u8109\u51b2\u5e76\u611f\u77e5\u5e73\u5747\u4eae\u5ea6\u3002.<\/p>\n<p>\u4e24\u4e2a\u53d8\u91cf\u5b9a\u4e49PWM\u8c03\u5149\u6027\u80fd\uff1a<\/p>\n<ul>\n<li><strong>\u9891\u7387\uff08Hz\uff09<\/strong> \u2013 \u6bcf\u79d2\u5f00\u5173\u5468\u671f\u6570<\/li>\n<li><strong>\u5360\u7a7a\u6bd4 (%)<\/strong> \u2013 \u7535\u6d41\u5904\u4e8e\u5f00\u542f\u72b6\u6001\u7684\u65f6\u95f4\u767e\u5206\u6bd4<\/li>\n<\/ul>\n<p>\u66f4\u9ad8 <strong>PWM\u8c03\u5149\u9891\u7387<\/strong> \u901a\u5e38\u80fd\u51cf\u5c11\u53ef\u89c1\u7684LED\u9891\u95ea\uff0c\u56e0\u4e3a\u5149\u8109\u51b2\u901f\u5ea6\u5feb\u4e8e\u4eba\u773c\u5206\u8fa8\u80fd\u529b\u3002.<\/p>\n<p>\u4e0e\u6a21\u62df\uff08CCR\uff09\u8c03\u5149\u4e0d\u540c\uff0cPWM\u5728\u5f00\u542f\u9636\u6bb5\u4f7fLED\u4fdd\u6301\u989d\u5b9a\u6ee1\u7535\u6d41\uff0c\u4ece\u800c\u7ef4\u6301\u8272\u5f69\u7a33\u5b9a\u6027\u4e0e\u6548\u7387\u3002\u7136\u800c\uff0c\u82e5 <strong>PWM\u9891\u7387<\/strong> \u8fc7\u4f4e\u65f6\uff0c\u65f6\u95f4\u5149\u8c03\u5236\u53d8\u5f97\u53ef\u611f\u77e5\u3002.<\/p>\n<hr \/>\n<h2>LED\u9891\u95ea\u5982\u4f55\u6d4b\u91cf\uff1f<\/h2>\n<p>LED\u9891\u95ea\u4e0d\u4ec5\u7531\u9891\u7387\u5b9a\u4e49\uff0c\u8fd8\u9700\u901a\u8fc7\u8c03\u5236\u6307\u6807\u8fdb\u884c\u91cf\u5316\u3002.<\/p>\n<h3>\u767e\u5206\u6bd4\u95ea\u70c1\uff08\u767e\u5206\u6bd4\u8c03\u5236\uff09<\/h3>\n<p>\u9891\u95ea\u767e\u5206\u6bd4 = (Lmax \u2212 Lmin) \/ (Lmax + Lmin) \u00d7 100%<\/p>\n<ul>\n<li><strong>Lmax<\/strong> = \u6700\u5927\u5149\u8f93\u51fa<\/li>\n<li><strong>Lmin<\/strong> = \u6700\u5c0f\u5149\u8f93\u51fa<\/li>\n<\/ul>\n<p>\u5728100%\u8c03\u5236\uff08\u5e38\u89c1\u4e8e\u4f4e\u9891PWM\uff09\u4e0b\uff0c\u5149\u8f93\u51fa\u6bcf\u5468\u671f\u964d\u81f3\u96f6\u3002.<\/p>\n<p>\u767e\u5206\u6bd4\u95ea\u70c1\u5728\u5317\u7f8e\u7167\u660e\u5b9e\u8df5\u4e2d\u5e38\u7528\uff0c\u5e76\u5728DOE\u6280\u672f\u51fa\u7248\u7269\u4e2d\u5f15\u7528\u3002.<sup id=\"fnref1:1\"><a href=\"\/zh\/1\/\" class=\"footnote-ref\">1<\/a><\/sup><\/p>\n<hr \/>\n<h3>\u9891\u95ea\u6307\u6570<\/h3>\n<p>\u95ea\u70c1\u6307\u6570\uff08IES\u5b9a\u4e49\uff09\u6d4b\u91cf\u6ce2\u5f62\u5f62\u72b6\u548c\u5360\u7a7a\u5206\u5e03\u3002\u5b83\u63d0\u4f9b\u4e86\u6bd4\u5355\u72ec\u767e\u5206\u6bd4\u95ea\u70c1\u66f4\u5b8c\u6574\u7684\u7279\u6027\u63cf\u8ff0\u3002.<sup id=\"fnref1:2\"><a href=\"\/zh\/2\/\" class=\"footnote-ref\">2<\/a><\/sup><\/p>\n<p>\u8bb8\u591a\u5546\u7528LED\u9a71\u52a8\u5668\u4f1a\u6ce8\u660e\u9891\u95ea\u767e\u5206\u6bd4\uff0c\u5374\u5ffd\u7565\u9891\u95ea\u6307\u6570\uff0c\u8fd9\u5728\u91c7\u8d2d\u5ba1\u6838\u4e2d\u662f\u4e00\u4e2a\u5371\u9669\u4fe1\u53f7\u3002.<\/p>\n<hr \/>\n<h3>\u65f6\u95f4\u5149\u8c03\u5236\uff08TLM\uff09<\/h3>\n<p>\u8be5 <strong>CIE TN 006:2016<\/strong> \u5f15\u5165\u4e86\u65f6\u95f4\u5149\u8c03\u5236\u7684\u66f4\u5e7f\u6cdb\u672f\u8bed\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u9891\u95ea\u767e\u5206\u6bd4<\/li>\n<li>\u9891\u95ea\u6307\u6570<\/li>\n<li>\u9891\u95ea\u53ef\u89c1\u5ea6\u6d4b\u91cf\uff08SVM\uff09<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u6307\u6807\u5728\u8fd0\u52a8\u4e30\u5bcc\u7684\u73af\u5883\u4e2d\u5c24\u5176\u91cd\u8981\uff0c\u4f8b\u5982\u96f6\u552e\u548c\u4ea4\u901a\u7a7a\u95f4\u3002.<sup id=\"fnref1:3\"><a href=\"\/zh\/3\/\" class=\"footnote-ref\">3<\/a><\/sup><\/p>\n<hr \/>\n<h2>PWM\u9891\u7387\u8fbe\u5230\u591a\u5c11\u65f6\u9891\u95ea\u4f1a\u53d8\u5f97\u4e0d\u53ef\u89c1\uff1f<\/h2>\n<p>\u4eba\u7c7b\u5bf9\u95ea\u70c1\u7684\u654f\u611f\u5ea6\u53d6\u51b3\u4e8e\uff1a<\/p>\n<ul>\n<li>\u9891\u7387<\/li>\n<li>\u8c03\u5236\u6df1\u5ea6<\/li>\n<li>\u89c2\u5bdf\u6761\u4ef6<\/li>\n<li>\u5468\u8fb9\u89c6\u89c9<\/li>\n<\/ul>\n<p>\u8be5 <strong>\u4e34\u754c\u9891\u95ea\u878d\u5408\uff08CFF\uff09<\/strong> \u9608\u503c\u901a\u5e38\u5728\u660e\u89c6\u6761\u4ef6\u4e0b\u9ad8\u4e8e60\u201390 Hz\uff0c\u4f46\u8fd9\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u5b8c\u5168\u6d88\u9664\u9891\u95ea\u6548\u5e94\u3002.<\/p>\n<p>IEEE\u603b\u7ed3\u7684\u7814\u7a76\u8868\u660e\uff0c\u98ce\u9669\u533a\u57df\u53d6\u51b3\u4e8e\u9891\u7387\u8c03\u5236\uff0c\u800c\u975e\u7edd\u5bf9\u503c\u3002.<sup id=\"fnref1:4\"><a href=\"\/zh\/4\/\" class=\"footnote-ref\">4<\/a><\/sup><\/p>\n<hr \/>\n<h2>IEEE 1789-2015\u5b9e\u9645\u63a8\u8350\u4ec0\u4e48\uff1f<\/h2>\n<p>\u8be5 <strong>IEEE Std 1789-2015<\/strong> \u4e3a\u9ad8\u4eae\u5ea6LED\u7684\u7535\u6d41\u8c03\u5236\u63d0\u4f9b\u6307\u5bfc\u3002.<\/p>\n<p>\u5b83\u5b9a\u4e49\u4e86\u4e24\u4e2a\u91cd\u8981\u533a\u57df\uff1a<\/p>\n<ul>\n<li><strong>\u65e0\u53ef\u89c1\u6548\u5e94\u6c34\u5e73\uff08NOEL\uff09<\/strong><\/li>\n<li><strong>\u4f4e\u98ce\u9669\u7b49\u7ea7<\/strong><\/li>\n<\/ul>\n<p>IEEE\u5e76\u672a\u58f0\u79f0\u201c3 kHz\u662f\u5b89\u5168\u7684\u201d\uff0c\u800c\u662f\u63d0\u4f9b\u4e86\u4f9d\u8d56\u4e8e\u8c03\u5236\u7684\u8fb9\u754c\u3002.<\/p>\n<p>\u7b80\u5316\u7684\u4f4e\u98ce\u9669\u6761\u4ef6\u53ef\u8868\u8ff0\u4e3a\uff1a<\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li><strong>f<\/strong> = \u9891\u7387\uff08\u5355\u4f4d\uff1aHz\uff09<\/li>\n<li><strong>\u8c03\u5236\u767e\u5206\u6bd4<\/strong> = \u8c03\u5236\u6df1\u5ea6<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e100%\u8c03\u5236\uff08\u5982\u5168PWM\uff09\uff0c\u8fd9\u610f\u5473\u7740\uff1a<\/p>\n<blockquote>\n<p>f &gt; 8 Hz\uff08\u4f4e\u98ce\u9669\u8fb9\u754c\uff09<\/p>\n<\/blockquote>\n<p>\u7136\u800c\uff0cIEEE\u8fdb\u4e00\u6b65\u6307\u51fa\uff0c\u8f83\u9ad8\u9891\u7387\u80fd\u663e\u8457\u964d\u4f4e\u9891\u95ea\u98ce\u9669\uff0c\u7279\u522b\u662f\u5728\u9ad8\u52a8\u6001\u4efb\u52a1\u4e2d\u3002.<\/p>\n<h3>\u5b9e\u9645\u5de5\u7a0b\u89e3\u8bfb<\/h3>\n<table>\n<thead>\n<tr>\n<th>PWM\u9891\u7387<\/th>\n<th>\u611f\u77e5\u98ce\u9669<\/th>\n<th>\u5546\u4e1a\u9002\u7528\u6027<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>&lt;100 Hz<\/td>\n<td>\u53ef\u89c1\u95ea\u70c1<\/td>\n<td>\u4e0d\u53ef\u63a5\u53d7<\/td>\n<\/tr>\n<tr>\n<td>100\u2013500 Hz<\/td>\n<td>\u53ef\u80fd\u4ea7\u751f\u9891\u95ea\u6548\u5e94<\/td>\n<td>\u8fd0\u52a8\u533a\u57df\u98ce\u9669<\/td>\n<\/tr>\n<tr>\n<td>500 Hz\u20132 kHz<\/td>\n<td>\u4f4e\u53ef\u89c1\u95ea\u70c1<\/td>\n<td>\u4e00\u822c\u4f7f\u7528\u53ef\u63a5\u53d7<\/td>\n<\/tr>\n<tr>\n<td>&gt;3 kHz<\/td>\n<td>\u6700\u5c0f\u53ef\u611f\u77e5\u98ce\u9669<\/td>\n<td>\u5546\u4e1a\u8c03\u5149\u9996\u9009<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8bb8\u591a\u9ad8\u8d28\u91cf\u5546\u7528LED\u9a71\u52a8\u5668\u5de5\u4f5c\u5728 <strong>2\u201320 kHz<\/strong>.<\/p>\n<hr \/>\n<h2>\u5b9e\u9645\u5b89\u88c5\u4e2d\u7684\u4f4e\u9891\u4e0e\u9ad8\u9891PWM\u5bf9\u6bd4<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/tecolite.com\/wp-content\/uploads\/2026\/02\/low-vs-high-pwm-frequency.webp\" alt=\"\u5206\u5c4f\u5bf9\u6bd4\u56fe\uff1a\u5de6\u4fa7\u4e3a\u4f4e\u9891PWM\u7167\u660e\u7684\u6a21\u7cca\u4ed3\u5e93\u573a\u666f\uff08\u542b\u7a7f\u9632\u62a4\u670d\u7684\u5de5\u4eba\uff09\uff0c\u53f3\u4fa7\u4e3a\u9ad8\u9891PWM\u7167\u660e\u7684\u6e05\u6670\u73b0\u4ee3\u529e\u516c\u5ba4\u573a\u666f\uff08\u542b\u529e\u516c\u684c\u4e0e\u7eff\u690d\uff09\u3002.\" \/><\/p>\n<p><em>\u5bf9\u6bd4\u56fe\u5c55\u793a\u4e86\u4f4e\u9891PWM\u5982\u4f55\u5728\u5de5\u4e1a\u4ed3\u5e93\u73af\u5883\u4e2d\u5bfc\u81f4\u53ef\u89c1\u9891\u95ea\uff0c\u800c\u9ad8\u9891PWM\u5728\u73b0\u4ee3\u529e\u516c\u73af\u5883\u4e2d\u63d0\u4f9b\u7a33\u5b9a\u65e0\u9891\u95ea\u7684\u7167\u660e\u3002.<\/em><\/p>\n<h3>\u4f4e\u4e8e500 Hz<\/h3>\n<ul>\n<li>\u66f4\u9ad8\u7684\u53ef\u89c1\u8c03\u5236<\/li>\n<li>\u66f4\u5f3a\u7684\u9891\u95ea\u6548\u5e94<\/li>\n<li>\u53ef\u80fd\u5e72\u6270\u89c6\u9891\u5f55\u5236<\/li>\n<\/ul>\n<p>\u4f4e\u9891PWM\u5728DOE\u5b9e\u5730\u8c03\u67e5\u4e2d\u5df2\u88ab\u8bc1\u5b9e\u4f1a\u5bfc\u81f4\u53ef\u89c2\u6d4b\u7684\u9891\u95ea\u3002.<sup id=\"fnref2:1\"><a href=\"\/zh\/1\/\" class=\"footnote-ref\">1<\/a><\/sup><\/p>\n<hr \/>\n<h3>1 kHz\u8303\u56f4<\/h3>\n<p>\u5728\u7ea61 kHz\u65f6\uff0c\u5927\u591a\u6570\u76f4\u63a5\u95ea\u70c1\u611f\u77e5\u6d88\u5931\u3002\u7136\u800c\uff1a<\/p>\n<ul>\n<li>\u9ad8\u901f\u8fd0\u52a8\u53ef\u80fd\u63ed\u793a\u9891\u95ea\u4f2a\u5f71<\/li>\n<li>\u6162\u52a8\u4f5c\u89c6\u9891\u53ef\u80fd\u66b4\u9732\u9891\u5e26\u6761\u7eb9<\/li>\n<\/ul>\n<hr \/>\n<h3>3\u5343\u8d6b\u53ca\u4ee5\u4e0a<\/h3>\n<p>\u9ad8\u4e8e 3 kHz\uff1a<\/p>\n<ul>\n<li>\u9891\u95ea\u53ef\u89c1\u6027\u663e\u8457\u964d\u4f4e<\/li>\n<li>\u78c1\u6027\u5143\u4ef6\u4ea7\u751f\u7684\u53ef\u542c\u566a\u58f0\u6700\u5c0f\u5316<\/li>\n<li>EMI\u6ee4\u6ce2\u66f4\u6613\u4e8e\u7ba1\u7406<\/li>\n<\/ul>\n<p>\u56e0\u6b64\uff0c\u8bb8\u591a\u5efa\u7b51\u8c03\u5149\u7cfb\u7edf\u8981\u6c42\u9891\u7387\u22652 kHz\u3002.<\/p>\n<hr \/>\n<h2>PWM\u4e0e\u6a21\u62df\uff08CCR\uff09\u8c03\u5149\u53ca\u9891\u95ea<\/h2>\n<p>\u641c\u7d22\u67e5\u8be2\u5e38\u6bd4\u8f83 PWM \u4e0e\u6a21\u62df\u8c03\u5149\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u53c2\u6570<\/th>\n<th>PWM\u8c03\u5149<\/th>\n<th>\u6a21\u62df\uff08CCR\uff09\u8c03\u5149<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7535\u6d41\u6ce2\u5f62<\/td>\n<td>\u5168\u5f00\/\u5168\u5173<\/td>\n<td>\u632f\u5e45\u964d\u4f4e<\/td>\n<\/tr>\n<tr>\n<td>\u8272\u5f69\u504f\u79fb<\/td>\n<td>\u6700\u5c0f<\/td>\n<td>\u4f4e\u7535\u6d41\u4e0b\u53ef\u80fd\u5b9e\u73b0<\/td>\n<\/tr>\n<tr>\n<td>\u95ea\u70c1\u884c\u4e3a<\/td>\n<td>\u9891\u7387\u76f8\u5173<\/td>\n<td>\u7eb9\u6ce2\u4f9d\u8d56<\/td>\n<\/tr>\n<tr>\n<td>\u6548\u7387<\/td>\n<td>\u9ad8<\/td>\n<td>\u4f4e\u4eae\u5ea6\u65f6\u7565\u6709\u964d\u4f4e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>PWM \u8c03\u5149\u9891\u7387\u5fc5\u987b\u8db3\u591f\u9ad8\u4ee5\u907f\u514d LED \u95ea\u70c1\uff0c\u800c\u6a21\u62df\u8c03\u5149\u5fc5\u987b\u63a7\u5236\u7eb9\u6ce2\u4ee5\u907f\u514d\u8c03\u5236\u3002.<\/p>\n<p>\u6df7\u5408\u9a71\u52a8\u5668\u6709\u65f6\u4f1a\u7ed3\u5408\u4e24\u79cd\u65b9\u6cd5\u3002.<\/p>\n<hr \/>\n<h2>\u767e\u5206\u6bd4\u95ea\u70c1\u4e0e\u95ea\u70c1\u6307\u6570\uff1a\u5e76\u975e\u540c\u4e00\u5ea6\u91cf\u6807\u51c6<\/h2>\n<p>\u8bb8\u591a\u5728\u7ebf\u8d44\u6599\u6df7\u6dc6\u4e86\u8fd9\u4e24\u8005\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u516c\u5236<\/th>\n<th>\u6d4b\u91cf<\/th>\n<th>\u9650\u5236<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u9891\u95ea\u767e\u5206\u6bd4<\/td>\n<td>\u8c03\u5236\u5e45\u5ea6<\/td>\n<td>\u5ffd\u7565\u6ce2\u5f62\u5f62\u72b6<\/td>\n<\/tr>\n<tr>\n<td>\u9891\u95ea\u6307\u6570<\/td>\n<td>\u57fa\u4e8e\u9762\u79ef\u7684\u6ce2\u5f62\u6d4b\u91cf<\/td>\n<td>\u8f83\u4e0d\u76f4\u89c2<\/td>\n<\/tr>\n<tr>\n<td>SVM\uff08CIE\uff09<\/td>\n<td>\u57fa\u4e8e\u8fd0\u52a8\u7684\u53ef\u89c1\u6027<\/td>\n<td>\u9700\u8981\u9ad8\u7ea7\u6d4b\u91cf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e3a\u63d0\u5347AI\u5f15\u7528\u4e0e\u5de5\u7a0b\u51c6\u786e\u6027\uff0c\u4f7f\u7528\u6b63\u786e\u672f\u8bed\u53ef\u589e\u5f3a\u6280\u672f\u53ef\u4fe1\u5ea6\u3002.<\/p>\n<hr \/>\n<h2>\u5982\u4f55\u8bc4\u4f30LED\u9a71\u52a8\u5668\u6570\u636e\u8868\u4e2d\u7684PWM\u9891\u7387<\/h2>\n<p>\u5ba1\u9605LED\u9a71\u52a8\u5668\u89c4\u683c\u65f6\uff1a<\/p>\n<h3>\u6700\u4f4e\u53ef\u63a5\u53d7\u6807\u51c6<\/h3>\n<ul>\n<li>PWM\u9891\u7387 \u2265 1\u5343\u8d6b\uff08\u6700\u4f4e\u8981\u6c42\uff09<\/li>\n<li>\u5546\u4e1a\u5e94\u7528\u9996\u9009 \u2265 2\u20133 kHz<\/li>\n<li>\u5728\u4e2d\u7b49\u8c03\u5149\u6c34\u5e73\u4e0b\uff0c\u9891\u95ea\u767e\u5206\u6bd4 &lt; 10%<\/li>\n<li>\u7b26\u5408 IEEE 1789 \u6307\u5357<\/li>\n<\/ul>\n<h3>\u9644\u52a0\u6307\u6807<\/h3>\n<ul>\n<li>THD &lt; 20%<\/li>\n<li>EMC\u5408\u89c4\u6027<\/li>\n<li>\u5df2\u53d1\u5e03\u7684\u95ea\u70c1\u6570\u636e\uff08\u975e\u201c\u65e0\u95ea\u70c1\u201d\u8425\u9500\u5ba3\u4f20\uff09<\/li>\n<\/ul>\n<p>\u7f8e\u56fd\u80fd\u6e90\u90e8\u8b66\u544a\uff0c\u82e5\u65e0\u5b9a\u91cf\u6570\u636e\uff0c\u4e0d\u5e94\u4ec5\u4f9d\u8d56\u201c\u65e0\u9891\u95ea\u201d\u6807\u7b7e\u3002.<sup id=\"fnref3:1\"><a href=\"\/zh\/1\/\" class=\"footnote-ref\">1<\/a><\/sup><\/p>\n<hr \/>\n<h2>\u4e3a\u4f55PWM\u9891\u7387\u5bf9\u5546\u4e1a\u9879\u76ee\u81f3\u5173\u91cd\u8981<\/h2>\n<p>\u5728\u591a\u533a\u57df\u9152\u5e97\u6216\u529e\u516c\u5ba4\u7167\u660e\u4e2d\uff1a<\/p>\n<ul>\n<li>\u4f4e PWM \u8c03\u5149\u9891\u7387\u53ef\u80fd\u5bfc\u81f4\u533a\u57df\u95f4\u611f\u77e5\u4e0d\u4e00\u81f4<\/li>\n<li>\u89c6\u9891\u5f55\u5236\u73af\u5883\u4f1a\u653e\u5927\u9891\u95ea\u95ee\u9898<\/li>\n<li>\u9ad8\u52a8\u6001\u96f6\u552e\u663e\u793a\u5c4f\u63ed\u793a\u9891\u95ea\u4f2a\u5f71<\/li>\n<\/ul>\n<p>\u786e\u4fdd\u9002\u5f53\u7684PWM\u8c03\u5149\u9891\u7387\u53ef\u964d\u4f4e\u8c03\u8bd5\u98ce\u9669\u5e76\u63d0\u9ad8\u957f\u671f\u7528\u6237\u6ee1\u610f\u5ea6\u3002.<\/p>\n<hr \/>\n<h2>\u5e38\u89c1\u6280\u672f\u95ee\u9898\u89e3\u7b54<\/h2>\n<p><strong>\u95ee\u98981\uff1a1 kHz PWM\u662f\u5426\u65e0\u95ea\u70c1\uff1f<\/strong><br \/>\n\u5bf9\u4e8e\u5927\u591a\u6570\u9759\u6001\u5e94\u7528\u573a\u666f\u901a\u5e38\u53ef\u63a5\u53d7\uff0c\u4f46\u5728\u8fd0\u52a8\u654f\u611f\u533a\u57df2\u20133 kHz\u66f4\u4e3a\u5b89\u5168\u3002.<\/p>\n<p><strong>\u95ee\u98982\uff1a100 Hz\u662f\u5426\u53ef\u63a5\u53d7\uff1f<\/strong><br \/>\n\u5426\u3002100 Hz\u5904\u4e8e\u53ef\u89c1\u8c03\u5236\u8303\u56f4\u5185\uff0c\u53ef\u80fd\u5bfc\u81f4\u9891\u95ea\u6548\u5e94\u3002.<\/p>\n<p><strong>Q3\uff1a\u9891\u7387\u8d8a\u9ad8\u5c31\u4e00\u5b9a\u8d8a\u597d\u5417\uff1f<\/strong><br \/>\n\u5e76\u975e\u65e0\u9650\u63d0\u5347\u3002\u6781\u9ad8\u9891\u7387\uff08&gt;50 kHz\uff09\u53ef\u80fd\u5e26\u6765\u5f00\u5173\u635f\u8017\u548c\u7535\u78c1\u5e72\u6270\u6311\u6218\u3002.<\/p>\n<p><strong>\u95ee\u98984\uff1aIEEE\u662f\u5426\u8981\u6c423 kHz\uff1f<\/strong><br \/>\nIEEE\u63d0\u4f9b\u8c03\u5236\u76f8\u5173\u7684\u6307\u5bfc\uff0c\u800c\u975e\u5355\u4e00\u5f3a\u5236\u9891\u7387\u3002.<\/p>\n<hr \/>\n<h2>\u7ed3\u8bba\uff1a\u5de5\u7a0b\u5efa\u8bae<\/h2>\n<p>\u9009\u62e9\u5408\u9002\u7684 <strong>PWM\u8c03\u5149\u9891\u7387<\/strong> \u5bf9\u4e8e\u51cf\u5c11LED\u95ea\u70c1\u3001\u786e\u4fdd\u89c6\u89c9\u8212\u9002\u5ea6\u81f3\u5173\u91cd\u8981\u3002.<\/p>\n<p>\u6838\u5fc3\u8981\u70b9\uff1a<\/p>\n<ul>\n<li>\u540c\u65f6\u8bc4\u4f30\u4e24\u8005 <strong>\u9891\u7387\u4e0e\u95ea\u70c1\u767e\u5206\u6bd4<\/strong><\/li>\n<li>\u53c2\u8003 <strong>IEEE 1789-2015<\/strong> \u98ce\u9669\u533a\u57df<\/li>\n<li>\u5546\u4e1a\u5e94\u7528\u5efa\u8bae\u91c7\u7528\u22652\u20133 kHz\u7684PWM\u9891\u7387<\/li>\n<li>\u9a8c\u8bc1\u91cf\u5316\u95ea\u70c1\u6570\u636e\u2014\u2014\u800c\u975e\u8425\u9500\u5ba3\u4f20<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e\u6d89\u53ca\u8c03\u5149\u63a7\u5236\u7cfb\u7edf\u7684\u5927\u578b\u7167\u660e\u9879\u76ee\uff0c\u5f3a\u70c8\u5efa\u8bae\u5728\u89c4\u8303\u9636\u6bb5\u5ba1\u67e5\u9a71\u52a8\u5668\u6ce2\u5f62\u548c\u95ea\u70c1\u6307\u6807\u3002.<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u8bc4\u4f30\u7528\u4e8e\u9152\u5e97\u3001\u96f6\u552e\u6216\u529e\u516c\u5ba4\u5b89\u88c5\u7684LED\u9a71\u52a8\u5668\uff0c\u6211\u4eec\u7684\u5de5\u7a0b\u56e2\u961f\u53ef\u4ee5\u5728\u91c7\u8d2d\u524d\u534f\u52a9\u8fdb\u884c\u95ea\u70c1\u6307\u6807\u5ba1\u67e5\u548cIEEE\u5408\u89c4\u6027\u9a8c\u8bc1\u3002.<\/p>\n<hr \/>\n<h2>\u53c2\u8003\u6587\u732e<\/h2>\n<div class=\"footnotes\">\n<hr \/>\n<ol>\n<li id=\"fn:1\">\n<p>\u7f8e\u56fd\u80fd\u6e90\u90e8\uff082015\u5e74\uff09\u3002. <em>\u95ea\u70c1\uff1a\u7406\u89e3\u65b0\u7684IEEE\u63a8\u8350\u5b9e\u8df5<\/em>.<br \/>\n<a href=\"https:\/\/www.energy.gov\/sites\/default\/files\/2022-11\/ssl-miller-lehman_flicker_lightfair2015.pdf\">https:\/\/www.energy.gov\/sites\/default\/files\/2022-11\/ssl-miller-lehman_flicker_lightfair2015.pdf<\/a>&#160;<a href=\"\/zh\/1\/\" rev=\"footnote\" class=\"footnote-backref\">\u21a9<\/a> <a href=\"\/zh\/1\/\" rev=\"footnote\" class=\"footnote-backref\">\u21a9<\/a> <a href=\"\/zh\/1\/\" rev=\"footnote\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:2\">\n<p>\u5317\u7f8e\u7167\u660e\u5de5\u7a0b\u5b66\u4f1a\u3002. <em>IES\u7167\u660e\u624b\u518c\u53ca\u95ea\u70c1\u6307\u6570\u5b9a\u4e49\u3002.<\/em><br \/>\n<a href=\"https:\/\/ies.org\/definitions\/flicker-index\/\">https:\/\/ies.org\/definitions\/flicker-index\/<\/a>&#160;<a href=\"\/zh\/2\/\" rev=\"footnote\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:3\">\n<p>\u56fd\u9645\u7167\u660e\u59d4\u5458\u4f1a\uff08CIE\uff09\u3002. <em>CIE TN 006:2016 \u2013 \u65f6\u95f4\u8c03\u5236\u7167\u660e\u7cfb\u7edf\u7684\u89c6\u89c9\u7279\u6027\u3002.<\/em><br \/>\n<a href=\"https:\/\/cie.co.at\/publications\/visual-aspects-time-modulated-lighting-systems\">https:\/\/cie.co.at\/publications\/visual-aspects-time-modulated-lighting-systems<\/a>&#160;<a href=\"\/zh\/3\/\" rev=\"footnote\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:4\">\n<p>\u7535\u6c14\u7535\u5b50\u5de5\u7a0b\u5e08\u5b66\u4f1a\u3002. <em>IEEE\u6807\u51c61789-2015 \u2013 \u9ad8\u4eae\u5ea6LED\u7535\u6d41\u8c03\u5236\u63a8\u8350\u5b9e\u8df5\u3002.<\/em><br \/>\n<a href=\"https:\/\/standards.ieee.org\/standard\/1789-2015.html\">https:\/\/standards.ieee.org\/standard\/1789-2015.html<\/a>&#160;<a href=\"\/zh\/4\/\" rev=\"footnote\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<\/ol>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>PWM frequency is only one part of flicker risk. Specifiers should also check dimming depth, driver topology, load compatibility and real flicker measurements.<\/p>","protected":false},"author":3,"featured_media":44334,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"PWM Frequency and LED Flicker: What Specifiers Should Check Before Buying","_seopress_titles_desc":"Learn how PWM frequency affects LED flicker, camera banding, dimming comfort, and driver selection for GU10, MR16, and commercial LED spotlights.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"PWM Frequency and LED Flicker: What Specifiers Should Check Before Buying","_seopress_social_fb_desc":"Learn how PWM frequency affects LED flicker, camera banding, dimming comfort, and driver selection for GU10, MR16, and commercial LED spotlights.","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"PWM Frequency and LED Flicker: What Specifiers Should Check Before Buying","_seopress_social_twitter_desc":"Learn how PWM frequency affects LED flicker, camera banding, dimming comfort, and driver selection for GU10, MR16, and commercial LED spotlights.","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[{"url":"","title":"","desc":"","thumbnail":"","duration":"","rating":"","view_count":"","tag":""}],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[12],"tags":[],"class_list":["post-44320","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/posts\/44320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/comments?post=44320"}],"version-history":[{"count":2,"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/posts\/44320\/revisions"}],"predecessor-version":[{"id":62558,"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/posts\/44320\/revisions\/62558"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/media\/44334"}],"wp:attachment":[{"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/media?parent=44320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/categories?post=44320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tecolite.com\/zh\/wp-json\/wp\/v2\/tags?post=44320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}