{"id":3996,"date":"2025-10-14T11:12:00","date_gmt":"2025-10-14T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/poe-pd-powered-device-guide\/"},"modified":"2026-06-22T06:21:36","modified_gmt":"2026-06-22T06:21:36","slug":"poe-pd-powered-device-guide","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/poe-pd-powered-device-guide","title":{"rendered":"Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n (PD) trong m\u1ea1ng PoE l\u00e0 g\u00ec?"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0ff72cddd5ba42c5bf1c0728d99250ed.png\" alt=\"What Is a Powered Device (PD)\" class=\"wp-image-3992\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0ff72cddd5ba42c5bf1c0728d99250ed.png 1536w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0ff72cddd5ba42c5bf1c0728d99250ed-300x200.png 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0ff72cddd5ba42c5bf1c0728d99250ed-1024x683.png 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0ff72cddd5ba42c5bf1c0728d99250ed-768x512.png 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0ff72cddd5ba42c5bf1c0728d99250ed-18x12.png 18w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd39<strong> <\/strong>Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00f4ng ngh\u1ec7 C\u1ea5p ngu\u1ed3n qua Ethernet (PoE), <strong>Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n (PD)<\/strong> \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t. \u0110\u00e2y l\u00e0 \u0111i\u1ec3m cu\u1ed1i nh\u1eadn <strong>c\u1ea3 d\u1eef li\u1ec7u v\u00e0 \u0111i\u1ec7n n\u0103ng<\/strong> th\u00f4ng qua m\u1ed9t c\u00e1p Ethernet duy nh\u1ea5t t\u1eeb <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/poe-pse-power-sourcing-equipment-guide\/\"><strong>Thi\u1ebft b\u1ecb cung c\u1ea5p \u0111i\u1ec7n (PSE)<\/strong><\/a> \u2014 th\u01b0\u1eddng l\u00e0 b\u1ed9 chuy\u1ec3n m\u1ea1ch PoE ho\u1eb7c b\u1ed9 ti\u00eam ngu\u1ed3n PoE (injector).<br\/>T\u1eeb camera an ninh \u0111\u1ebfn \u0111i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y v\u00e0 \u0111i\u1ec7n tho\u1ea1i VoIP, c\u00e1c thi\u1ebft b\u1ecb PD gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c tri\u1ec3n khai, gi\u1ea3m b\u1edbt s\u1ef1 l\u1ed9n x\u1ed9n v\u00e0 n\u00e2ng cao t\u00ednh linh ho\u1ea1t c\u1ee7a m\u1ea1ng trong c\u00e1c t\u00f2a nh\u00e0 th\u00f4ng minh v\u00e0 h\u1ec7 th\u1ed1ng doanh nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd39<strong> <\/strong>Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n (PD) l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n (PD)<\/strong> l\u00e0 b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb m\u1ea1ng n\u00e0o <strong>l\u1ea5y \u0111i\u1ec7n n\u0103ng t\u1eeb k\u1ebft n\u1ed1i Ethernet<\/strong> theo c\u00e1c ti\u00eau chu\u1ea9n PoE c\u1ee7a IEEE.<br\/>Thay v\u00ec ph\u1ee5 thu\u1ed9c v\u00e0o b\u1ed9 \u0111\u1ed5i ngu\u1ed3n b\u00ean ngo\u00e0i, m\u1ed9t thi\u1ebft b\u1ecb PD s\u1eed d\u1ee5ng ch\u00ednh c\u00e1p truy\u1ec1n t\u00edn hi\u1ec7u Ethernet \u0111\u1ec3 l\u1ea5y \u0111i\u1ec7n m\u1ed9t c\u00e1ch an to\u00e0n t\u1eeb thi\u1ebft b\u1ecb cung c\u1ea5p ngu\u1ed3n (PSE).<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/25ed618bd34347db81927a5afcefe98a.webp\" alt=\"PoE PD\" class=\"wp-image-3993\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/25ed618bd34347db81927a5afcefe98a.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/25ed618bd34347db81927a5afcefe98a-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/25ed618bd34347db81927a5afcefe98a-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/25ed618bd34347db81927a5afcefe98a-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/25ed618bd34347db81927a5afcefe98a-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u00ed d\u1ee5 ph\u1ed5 bi\u1ebfn v\u1ec1 thi\u1ebft b\u1ecb PD bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-a-wireless-access-point-wap\/\">\u0110i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y (WAP)<\/a><\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ip-internet-protocol-cameras-overview\/\">Camera IP<\/a> v\u00e0 camera PTZ<\/p><\/li><li><p>\u0110i\u1ec7n tho\u1ea1i VoIP<\/p><\/li><li><p>B\u1ed9 t\u1eadp trung m\u1ea1ng (Hub) ho\u1eb7c b\u1ed9 chuy\u1ec3n m\u1ea1ch mini<\/p><\/li><li><p>C\u1ea3m bi\u1ebfn IoT v\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n th\u00f4ng minh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch t\u00edch h\u1ee3p vi\u1ec7c c\u1ea5p ngu\u1ed3n v\u1edbi truy\u1ec1n d\u1eef li\u1ec7u, c\u00e1c thi\u1ebft b\u1ecb PD l\u00e0m gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p khi l\u1eafp \u0111\u1eb7t v\u00e0 t\u0103ng \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd39<strong> <\/strong>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb PD trong h\u1ec7 th\u1ed1ng PoE<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh c\u1ea5p ngu\u1ed3n PoE tu\u00e2n theo m\u1ed9t giao th\u1ee9c b\u1eaft tay ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh b\u1edfi ti\u00eau chu\u1ea9n <strong>IEEE 802.3<\/strong> nh\u1eb1m \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 an to\u00e0n:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>Ph\u00e1t hi\u1ec7n<\/strong> \u2013 Thi\u1ebft b\u1ecb PSE ph\u00e1t hi\u1ec7n thi\u1ebft b\u1ecb PD h\u1ee3p l\u1ec7 b\u1eb1ng c\u00e1ch \u0111o \u0111i\u1ec7n tr\u1edf \u0111\u1eb7c tr\u01b0ng c\u1ee7a n\u00f3 (kho\u1ea3ng 25 k\u03a9).<\/p><\/li><li><p><strong>Ph\u00e2n l\u1edbp<\/strong> \u2013 Thi\u1ebft b\u1ecb PD th\u00f4ng b\u00e1o l\u1edbp c\u00f4ng su\u1ea5t c\u1ee7a m\u00ecnh (t\u1eeb L\u1edbp 0 \u0111\u1ebfn L\u1edbp 8), cho bi\u1ebft m\u1ee9c c\u00f4ng su\u1ea5t m\u00e0 n\u00f3 c\u1ea7n.<\/p><\/li><li><p><strong>C\u1ea5p ngu\u1ed3n<\/strong> \u2013 Thi\u1ebft b\u1ecb <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/poe-pse-power-sourcing-equipment-guide\/\">PSE<\/a> \u00e1p \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u (DC) l\u00ean c\u00e1p; thi\u1ebft b\u1ecb PD b\u1eaft \u0111\u1ea7u nh\u1eadn \u0111i\u1ec7n.<\/p><\/li><li><p><strong>Duy tr\u00ec c\u1ea5p ngu\u1ed3n<\/strong> \u2013 Thi\u1ebft b\u1ecb PD ti\u00eau th\u1ee5 m\u1ed9t d\u00f2ng \u0111i\u1ec7n t\u1ed1i thi\u1ec3u \u0111\u1ec3 b\u00e1o hi\u1ec7u r\u1eb1ng n\u00f3 v\u1eabn \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/p><\/li><li><p><strong>Ng\u1eaft k\u1ebft n\u1ed1i<\/strong> \u2013 Khi b\u1ecb r\u00fat c\u00e1p ho\u1eb7c t\u1eaft ngu\u1ed3n, thi\u1ebft b\u1ecb PSE t\u1ef1 \u0111\u1ed9ng ng\u1eebng c\u1ea5p \u0111i\u1ec7n.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Quy tr\u00ecnh chu\u1ea9n h\u00f3a n\u00e0y \u0111\u1ea3m b\u1ea3o ch\u1ec9 c\u00e1c thi\u1ebft b\u1ecb PD tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n m\u1edbi \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n, ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng \u0111i\u1ec7n \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng h\u1ed7 tr\u1ee3 PoE.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd39<strong> <\/strong>C\u00e1c l\u1edbp c\u00f4ng su\u1ea5t PD v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n PoE<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PoE \u0111\u00e3 ph\u00e1t tri\u1ec3n \u0111\u1ec3 h\u1ed7 tr\u1ee3 nhi\u1ec1u m\u1ee9c c\u00f4ng su\u1ea5t v\u00e0 danh m\u1ee5c thi\u1ebft b\u1ecb kh\u00e1c nhau:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 128px;\"\/><col style=\"width: 122px;\"\/><col style=\"width: 134px;\"\/><col style=\"width: 119px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"128\"><p>Ti\u00eau chu\u1ea9n IEEE<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"122\"><p>Lo\u1ea1i<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"134\"><p>C\u00f4ng su\u1ea5t c\u1ee7a PSE<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"119\"><p>C\u00f4ng su\u1ea5t c\u1ee7a PD<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>C\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec3n h\u00ecnh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"128\"><p><strong>3af <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3af-poe-standard-explained\/\"><strong>(PoE)<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"122\"><p>Lo\u1ea1i 1<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"134\"><p>15,4 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"119\"><p>12,95 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110i\u1ec7n tho\u1ea1i IP, \u0111i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y (WAP)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"128\"><p><strong>802.3at <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3at-power-over-ethernet-plus-standard\/\"><strong>(PoE+)<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"122\"><p>Lo\u1ea1i 2<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"134\"><p>30 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"119\"><p>25,5 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Camera, \u0111i\u1ec3m truy c\u1eadp (AP)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"128\"><p><strong>3bt <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-ieee-802-3-bt-poe-standard\/\"><strong>(PoE++)<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"122\"><p>Lo\u1ea1i 3 \/ 4<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"134\"><p>60\u2013100 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"119\"><p>51\u201390 W<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Camera PTZ, \u0111\u00e8n LED, m\u00e0n h\u00ecnh hi\u1ec3n th\u1ecb<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c thi\u1ebft b\u1ecb PD hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng c\u00f3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c, cho ph\u00e9p v\u1eadn h\u00e0nh an to\u00e0n v\u1edbi c\u00e1c thi\u1ebft b\u1ecb PSE c\u0169 h\u01a1n, d\u00f9 m\u1ee9c c\u00f4ng su\u1ea5t s\u1eb5n c\u00f3 s\u1ebd th\u1ea5p h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd39<strong> <\/strong>C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc trong thi\u1ebft k\u1ebf ph\u1ea7n c\u1ee9ng PD<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ean trong m\u1ed7i thi\u1ebft b\u1ecb PD \u0111\u1ec1u c\u00f3 m\u1ed9t <strong>m\u1ea1ch \u0111\u1ea7u v\u00e0o PoE<\/strong> ch\u1ecbu tr\u00e1ch nhi\u1ec7m qu\u1ea3n l\u00fd vi\u1ec7c th\u01b0\u01a1ng l\u01b0\u1ee3ng ngu\u1ed3n v\u00e0 c\u00e1ch ly \u0111i\u1ec7n.<br\/>M\u1ed9t th\u00e0nh ph\u1ea7n then ch\u1ed1t l\u00e0 <strong>bi\u1ebfn \u00e1p LAN (magnetics)<\/strong> \u2014 n\u00f3 t\u00e1ch bi\u1ec7t \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n v\u00e0 \u0111\u01b0\u1eddng d\u1eabn d\u1eef li\u1ec7u \u0111\u1ed3ng th\u1eddi duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u.<br\/>C\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf PD c\u0169ng ph\u1ea3i xem x\u00e9t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110i\u1ec7n \u00e1p c\u00e1ch ly ph\u00f9 h\u1ee3p (th\u01b0\u1eddng l\u00e0 1500 Vrms ho\u1eb7c cao h\u01a1n)<\/p><\/li><li><p>T\u1ea3n nhi\u1ec7t khi ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t t\u1ed1i \u0111a<\/p><\/li><li><p>\u0110i\u1ec7n tr\u1edf \u0111\u1eb7c tr\u01b0ng PoE v\u00e0 m\u1ea1ch ph\u00e2n l\u1edbp<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi ch\u1ebf \u0111\u1ed9 A\/B ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng tr\u00ean 4 c\u1eb7p d\u00e2y<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ef1a ch\u1ecdn \u0111\u00fang <strong>\u0110\u1ea7u n\u1ed1i RJ45 t\u00edch h\u1ee3p PoE<\/strong> and <strong>bi\u1ebfn \u00e1p magnetics<\/strong> gi\u00fap \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c c\u1ea5p ngu\u1ed3n \u1ed5n \u0111\u1ecbnh v\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-electromagnetic-interference\/\">EMI<\/a> hi\u1ec7u n\u0103ng.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02546867f4f74b07b286934e8e37c9e9.webp\" alt=\"LINK-PP PD Solutions\" class=\"wp-image-3994\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02546867f4f74b07b286934e8e37c9e9.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02546867f4f74b07b286934e8e37c9e9-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02546867f4f74b07b286934e8e37c9e9-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02546867f4f74b07b286934e8e37c9e9-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/02546867f4f74b07b286934e8e37c9e9-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb g\u1ed1c (OEM) thi\u1ebft k\u1ebf giao di\u1ec7n PD, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\"><strong>LINK-PP<\/strong><\/a> cung c\u1ea5p lo\u1ea1t linh ki\u1ec7n t\u01b0\u01a1ng th\u00edch PoE \u0111a d\u1ea1ng \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra theo ti\u00eau chu\u1ea9n IEEE 802.3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/474069.htm\"><strong>LPJK6072AONL<\/strong><\/a> \u2013 \u0110\u1ea7u n\u1ed1i RJ45 t\u00edch h\u1ee3p h\u1ed7 tr\u1ee3 PoE v\u00e0 Ethernet Gigabit. L\u00fd t\u01b0\u1edfng cho c\u00e1c thi\u1ebft k\u1ebf PD nh\u1ecf g\u1ecdn nh\u01b0 camera IP v\u00e0 \u0111i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y (WAP).<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/452769.htm\"><strong>LP41223NL<\/strong><\/a> \u2013 Bi\u1ebfn \u00e1p magnetics PoE+ \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho thi\u1ebft b\u1ecb PD Ethernet 10\/100 Base-T, \u0111\u1ea3m b\u1ea3o c\u00e1ch ly m\u1ea1nh m\u1ebd v\u00e0 d\u00f2ng \u0111i\u1ec7n c\u00e2n b\u1eb1ng.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c linh ki\u1ec7n \u0111\u1ea1t chu\u1ea9n PoE \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng t\u1eeb LINK-PP gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n ngu\u1ed3n, gi\u1ea3m nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI) v\u00e0 \u0111\u01a1n gi\u1ea3n h\u00f3a b\u1ed1 tr\u00ed m\u1ea1ch in (PCB).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd39<strong> <\/strong>V\u00ec sao thi\u1ebft b\u1ecb PD quan tr\u1ecdng trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/iot-internet-of-things-definition-and-real-world-examples\/\">IoT<\/a> v\u00e0 c\u00e1c thi\u1ebft b\u1ecb th\u00f4ng minh \u1edf bi\u00ean ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn, c\u00e1c thi\u1ebft b\u1ecb PD \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n qua PoE mang l\u1ea1i gi\u1ea3i ph\u00e1p m\u1edf r\u1ed9ng quy m\u00f4 hi\u1ec7u qu\u1ea3 \u0111\u1ec3 tri\u1ec3n khai c\u00e1c h\u1ec7 th\u1ed1ng k\u1ebft n\u1ed1i.<br\/>Ch\u00fang cho ph\u00e9p qu\u1ea3n l\u00fd ngu\u1ed3n t\u1eadp trung, kh\u1ea3 n\u0103ng kh\u1edfi \u0111\u1ed9ng l\u1ea1i t\u1eeb xa v\u00e0 b\u1ed1 tr\u00ed thi\u1ebft b\u1ecb linh ho\u1ea1t \u2014 t\u1ea5t c\u1ea3 ch\u1ec9 th\u00f4ng qua m\u1ed9t c\u00e1p Ethernet duy nh\u1ea5t.<br\/>Hi\u1ec7u qu\u1ea3 n\u00e0y \u0111\u00e3 khi\u1ebfn c\u00e1c thi\u1ebft b\u1ecb PD tr\u1edf th\u00e0nh x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a <strong>c\u00e1c t\u00f2a nh\u00e0 th\u00f4ng minh, t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng kh\u00f4ng d\u00e2y doanh nghi\u1ec7p<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd39<strong> <\/strong>K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n (PD)<\/strong> kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t \u0111i\u1ec3m cu\u1ed1i PoE \u2014 m\u00e0 c\u00f2n l\u00e0 th\u00e0nh ph\u1ea7n then ch\u1ed1t gi\u00fap ph\u00e2n ph\u1ed1i ngu\u1ed3n \u0111i\u1ec7n hi\u1ec7u qu\u1ea3, an to\u00e0n v\u00e0 th\u00f4ng minh tr\u00ean to\u00e0n b\u1ed9 m\u1ea1ng IP.<br\/>D\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m m\u1edbi hay n\u00e2ng c\u1ea5p c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng, vi\u1ec7c \u0111\u1ea3m b\u1ea3o c\u00e1c th\u00e0nh ph\u1ea7n PD c\u1ee7a b\u1ea1n tu\u00e2n th\u1ee7 <strong>IEEE 802.3 af\/at\/bt<\/strong> l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 t\u00ecm hi\u1ec3u c\u00e1c \u0111\u1ea7u n\u1ed1i v\u00e0 bi\u1ebfn \u00e1p magnetics s\u1eb5n s\u00e0ng cho PoE ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng, h\u00e3y kh\u00e1m ph\u00e1 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\">d\u1ea3i s\u1ea3n ph\u1ea9m c\u1ee7a LINK-PP<\/a> \u2014 bao g\u1ed3m c\u00e1c gi\u1ea3i ph\u00e1p nh\u01b0 <strong>LPJK6072AONL<\/strong> and <strong>LP41223NL<\/strong> \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho vi\u1ec7c t\u00edch h\u1ee3p v\u00e0o thi\u1ebft b\u1ecb PD.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n (PD) l\u00e0 g\u00ec trong c\u00e1c m\u1ea1ng PoE, c\u00e1ch n\u00f3 nh\u1eadn \u0111i\u1ec7n t\u1eeb Thi\u1ebft b\u1ecb cung c\u1ea5p ngu\u1ed3n (PSE), v\u00e0 kh\u00e1m ph\u00e1 c\u00e1c th\u00e0nh ph\u1ea7n s\u1eb5n s\u00e0ng cho PoE c\u1ee7a LINK-PP nh\u01b0 LPJK6072AONL v\u00e0 LP41223NL.<\/p>","protected":false},"author":1,"featured_media":3995,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[22,23],"class_list":["post-3996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-integrated-rj45-connectors","tag-link-pp-lan-transformers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3996","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=3996"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3996\/revisions"}],"predecessor-version":[{"id":11016,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3996\/revisions\/11016"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/3995"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=3996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=3996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=3996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}