{"id":4310,"date":"2025-09-24T11:12:00","date_gmt":"2025-09-24T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/what-is-a-capacitor\/"},"modified":"2026-06-22T09:04:53","modified_gmt":"2026-06-22T09:04:53","slug":"what-is-a-capacitor","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-a-capacitor","title":{"rendered":"T\u1ee5 \u0111i\u1ec7n Gi\u1ea3i th\u00edch: C\u00e1c lo\u1ea1i, \u1ee8ng d\u1ee5ng &amp; Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt Ch\u00ednh"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38d57585aba446d9a7c547b1c231b101.webp\" alt=\"What is a Capacitor?\" class=\"wp-image-4307\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38d57585aba446d9a7c547b1c231b101.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38d57585aba446d9a7c547b1c231b101-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38d57585aba446d9a7c547b1c231b101-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38d57585aba446d9a7c547b1c231b101-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/38d57585aba446d9a7c547b1c231b101-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>1\ufe0f\u20e3 <\/strong>Gi\u1edbi thi\u1ec7u: T\u1ee5 \u0111i\u1ec7n l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>t\u1ee5 \u0111i\u1ec7n<\/strong> l\u00e0 m\u1ed9t linh ki\u1ec7n \u0111i\u1ec7n t\u1eed th\u1ee5 \u0111\u1ed9ng l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n trong m\u1ed9t tr\u01b0\u1eddng \u0111i\u1ec7n. Kh\u00e1c v\u1edbi \u0111i\u1ec7n tr\u1edf, v\u1ed1n ti\u00eau t\u00e1n n\u0103ng l\u01b0\u1ee3ng, t\u1ee5 \u0111i\u1ec7n <strong>t\u1ea1m th\u1eddi t\u00edch tr\u1eef v\u00e0 gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng<\/strong>, do \u0111\u00f3 ch\u00fang r\u1ea5t c\u1ea7n thi\u1ebft cho qu\u1ea3n l\u00fd ngu\u1ed3n, l\u1ecdc v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01b0\u1ee3c \u0111o b\u1eb1ng <strong>farad (F)<\/strong>, t\u1ee5 \u0111i\u1ec7n l\u00e0 th\u00e0nh ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong \u0111i\u1ec7n t\u1eed hi\u1ec7n \u0111\u1ea1i, t\u1eeb c\u00e1c <strong>thi\u1ebft b\u1ecb ti\u00eau d\u00f9ng<\/strong> and <strong>industrial automation<\/strong> to <strong>thi\u1ebft b\u1ecb m\u1ea1ng v\u00e0 \u0111i\u1ec7n t\u1eed \u00f4 t\u00f4<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>2\ufe0f\u20e3 <\/strong>T\u1ee5 \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ee5 \u0111i\u1ec7n g\u1ed3m hai b\u1ea3n d\u1eabn \u0111i\u1ec7n \u0111\u01b0\u1ee3c ng\u0103n c\u00e1ch b\u1edfi m\u1ed9t v\u1eadt li\u1ec7u \u0111i\u1ec7n m\u00f4i. Khi \u00e1p d\u1ee5ng \u0111i\u1ec7n \u00e1p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110i\u1ec7n t\u00edch d\u01b0\u01a1ng t\u00edch t\u1ee5 tr\u00ean m\u1ed9t b\u1ea3n.<\/p><\/li><li><p>\u0110i\u1ec7n t\u00edch \u00e2m t\u00edch t\u1ee5 tr\u00ean b\u1ea3n kia.<\/p><\/li><li><p>V\u1eadt li\u1ec7u \u0111i\u1ec7n m\u00f4i ng\u0103n d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) ch\u1ea1y tr\u1ef1c ti\u1ebfp nh\u01b0ng cho ph\u00e9p t\u00edn hi\u1ec7u xoay chi\u1ec1u (AC) v\u00e0 t\u00edch tr\u1eef n\u0103ng l\u01b0\u1ee3ng t\u1ea1m th\u1eddi.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eb7c t\u00ednh n\u00e0y khi\u1ebfn t\u1ee5 \u0111i\u1ec7n hi\u1ec7u qu\u1ea3 trong vi\u1ec7c <strong>san ph\u1eb3ng \u0111i\u1ec7n \u00e1p, gh\u00e9p t\u00edn hi\u1ec7u v\u00e0 cung c\u1ea5p ngu\u1ed3n d\u1ef1 ph\u00f2ng t\u1ea1m th\u1eddi<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>3\ufe0f\u20e3<\/strong>C\u00e1c lo\u1ea1i t\u1ee5 \u0111i\u1ec7n<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"512\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/662cef475aa548268799a42883e152ba.webp\" alt=\"Types of Capacitors\" class=\"wp-image-4308\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/662cef475aa548268799a42883e152ba.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/662cef475aa548268799a42883e152ba-300x128.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/662cef475aa548268799a42883e152ba-1024x437.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/662cef475aa548268799a42883e152ba-768x328.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/662cef475aa548268799a42883e152ba-18x8.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 T\u1ee5 g\u1ed1m<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong <strong>m\u1ea1ch t\u1ea7n s\u1ed1 cao v\u00e0 m\u1ea1ch \u0111a d\u1ee5ng<\/strong>.<\/p><\/li><li><p>C\u00f3 <strong>\u0111\u1ed9 t\u1ef1 c\u1ea3m th\u1ea5p v\u00e0 hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh<\/strong>.<\/p><\/li><li><p>Ph\u1ed5 bi\u1ebfn trong <strong>thi\u1ebft b\u1ecb vi\u1ec5n th\u00f4ng v\u00e0 m\u1ea1ng<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 T\u1ee5 \u0111i\u1ec7n ph\u00e2n<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u00e1 tr\u1ecb \u0111i\u1ec7n dung cao, l\u00fd t\u01b0\u1edfng cho <strong>l\u1ecdc ngu\u1ed3n v\u00e0 t\u00edch tr\u1eef n\u0103ng l\u01b0\u1ee3ng<\/strong>.<\/p><\/li><li><p>Ph\u00e2n c\u1ef1c, ph\u00f9 h\u1ee3p v\u1edbi <strong>\u1ee9ng d\u1ee5ng m\u1ed9t chi\u1ec1u (DC)<\/strong>.<\/p><\/li><li><p>Ph\u1ed5 bi\u1ebfn trong <strong>h\u1ec7 th\u1ed1ng ngu\u1ed3n c\u00f4ng nghi\u1ec7p v\u00e0 \u00f4 t\u00f4<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 T\u1ee5 m\u00e0ng<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ed9 tin c\u1eady tuy\u1ec7t v\u1eddi.<\/p><\/li><li><p>Ph\u00f9 h\u1ee3p v\u1edbi <strong>\u1ee9ng d\u1ee5ng \u0111i\u1ec7n \u00e1p cao v\u00e0 t\u1ea7n s\u1ed1 cao<\/strong>.<\/p><\/li><li><p>\u0110\u01b0\u1ee3c d\u00f9ng trong <strong>\u0111i\u1ec7n t\u1eed c\u00f4ng su\u1ea5t v\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 T\u1ee5 tantalum<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nh\u1ecf g\u1ecdn v\u1edbi t\u1ef7 l\u1ec7 \u0111i\u1ec7n dung tr\u00ean th\u1ec3 t\u00edch cao.<\/p><\/li><li><p>\u1ed4n \u0111\u1ecbnh trong d\u1ea3i nhi\u1ec7t \u0111\u1ed9 r\u1ed9ng.<\/p><\/li><li><p>\u0110\u01b0\u1ee3c \u01b0u ti\u00ean trong <strong>h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, y t\u1ebf v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u1ea7m tay<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 Si\u00eau t\u1ee5 \u0111i\u1ec7n (t\u1ee5 si\u00eau \u0111i\u1ec7n dung)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110i\u1ec7n dung c\u1ef1c cao.<\/p><\/li><li><p>\u0110\u01b0\u1ee3c d\u00f9ng cho <strong>t\u00edch tr\u1eef n\u0103ng l\u01b0\u1ee3ng, ngu\u1ed3n d\u1ef1 ph\u00f2ng v\u00e0 h\u1ec7 th\u1ed1ng phanh t\u00e1i sinh<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u2666 T\u1ee5 \u0111i\u1ec7n g\u1eafn b\u1ec1 m\u1eb7t (SMD)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nh\u1ecf g\u1ecdn, \u0111\u00e1ng tin c\u1eady v\u00e0 t\u1ed1i \u01b0u cho <strong>thi\u1ebft k\u1ebf b\u1ea3ng m\u1ea1ch in (PCB) hi\u1ec7n \u0111\u1ea1i<\/strong>.<\/p><\/li><li><p>Thi\u1ebft y\u1ebfu trong <strong>thi\u1ebft b\u1ecb m\u1ea1ng, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/link-pp-solutions-for-iot-systems\/\"><strong>IoT<\/strong><\/a><strong> ph\u1ea7n c\u1ee9ng v\u00e0 h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>4\ufe0f\u20e3 <\/strong>C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh c\u1ea7n xem x\u00e9t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1ef1a ch\u1ecdn t\u1ee5 \u0111i\u1ec7n, k\u1ef9 s\u01b0 v\u00e0 qu\u1ea3n l\u00fd mua h\u00e0ng ph\u1ea3i \u0111\u00e1nh gi\u00e1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Gi\u00e1 tr\u1ecb \u0111i\u1ec7n dung (F)<\/strong> \u2013 X\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng \u0111i\u1ec7n t\u00edch \u0111\u01b0\u1ee3c t\u00edch tr\u1eef.<\/p><\/li><li><p><strong>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c (V)<\/strong> \u2013 \u0110i\u1ec7n \u00e1p v\u1eadn h\u00e0nh an to\u00e0n t\u1ed1i \u0111a.<\/p><\/li><li><p><strong>\u0110i\u1ec7n tr\u1edf n\u1ed1i ti\u1ebfp t\u01b0\u01a1ng \u0111\u01b0\u01a1ng (ESR)<\/strong> \u2013 \u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 sinh nhi\u1ec7t.<\/p><\/li><li><p><strong>\u0110\u1ed9 dung sai (%)<\/strong> \u2013 \u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a gi\u00e1 tr\u1ecb \u0111i\u1ec7n dung.<\/p><\/li><li><p><strong>H\u1ec7 s\u1ed1 nhi\u1ec7t<\/strong> \u2013 \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n thay \u0111\u1ed5i.<\/p><\/li><li><p><strong>D\u1ea1ng ch\u00e2n (g\u1eafn xuy\u00ean l\u1ed7, <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-surface-mount-device-smd\/\"><strong>SMD<\/strong><\/a><strong>)<\/strong> \u2013 T\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi ph\u01b0\u01a1ng ph\u00e1p l\u1eafp r\u00e1p.<\/p><\/li><li><p><strong>\u0110\u1ed9 tin c\u1eady v\u00e0 ch\u1ee9ng nh\u1eadn<\/strong> \u2013 Y\u1ebfu t\u1ed1 then ch\u1ed1t trong <strong>ng\u00e0nh m\u1ea1ng, vi\u1ec5n th\u00f4ng v\u00e0 \u00f4 t\u00f4<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>5\ufe0f\u20e3 <\/strong>\u1ee8ng d\u1ee5ng c\u1ee7a t\u1ee5 \u0111i\u1ec7n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ee5 \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>L\u1ecdc ngu\u1ed3n<\/strong> \u2013 \u1ed4n \u0111\u1ecbnh \u0111\u1ea7u ra trong thi\u1ebft b\u1ecb m\u1ea1ng v\u00e0 c\u00f4ng nghi\u1ec7p.<\/p><\/li><li><p><strong>Gh\u00e9p v\u00e0 t\u00e1ch t\u00edn hi\u1ec7u<\/strong> \u2013 \u0110\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u truy\u1ec1n th\u00f4ng s\u1ea1ch.<\/p><\/li><li><p><strong>M\u1ea1ch t\u1ea1o th\u1eddi gian<\/strong> \u2013 D\u00f9ng trong b\u1ed9 dao \u0111\u1ed9ng v\u00e0 m\u1ea1ch tr\u1ec5.<\/p><\/li><li><p><strong>T\u00edch tr\u1eef n\u0103ng l\u01b0\u1ee3ng &amp; ngu\u1ed3n d\u1ef1 ph\u00f2ng<\/strong> \u2013 H\u1ed7 tr\u1ee3 nhu c\u1ea7u \u0111i\u1ec7n ng\u1eafn h\u1ea1n trong <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-servers-components-types-functions\/\">, and fiber optic links through interchangeable transceiver modules. Unlike standard RJ45 Ethernet ports, SFP ports can support both fiber optic and copper Ethernet connections depending on the installed module.<\/a> v\u00e0 h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng.<\/p><\/li><li><p><strong>B\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 &amp; bi\u1ebfn t\u1ea7n<\/strong> \u2013 N\u00e2ng cao \u0111\u1ed9 tin c\u1eady trong t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p.<\/p><\/li><li><p><strong>\u0110i\u1ec7n t\u1eed \u00f4 t\u00f4<\/strong> \u2013 H\u1ed7 tr\u1ee3 ECU, c\u1ea3m bi\u1ebfn v\u00e0 h\u1ec7 th\u1ed1ng \u0111\u00e8n LED.<\/p><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u t\u1ee5 \u0111i\u1ec7n l\u00e0 g\u00ec, c\u00e1c lo\u1ea1i t\u1ee5 \u0111i\u1ec7n, \u1ee9ng d\u1ee5ng trong \u0111i\u1ec7n t\u1eed v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quan tr\u1ecdng \u0111\u1ec3 gi\u00fap k\u1ef9 s\u01b0 v\u00e0 ng\u01b0\u1eddi mua \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t.<\/p>","protected":false},"author":1,"featured_media":4309,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[23],"class_list":["post-4310","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-link-pp-lan-transformers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4310","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=4310"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4310\/revisions"}],"predecessor-version":[{"id":11369,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4310\/revisions\/11369"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4309"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}