{"id":19645,"date":"2025-07-07T08:45:06","date_gmt":"2025-07-07T01:45:06","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=19645"},"modified":"2025-07-07T08:45:06","modified_gmt":"2025-07-07T01:45:06","slug":"y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/","title":{"rendered":"\u00dd ngh\u0129a c\u00f4ng su\u1ea5t \u0111i\u1ec7n v\u00e0 c\u00e1ch t\u00ednh c\u00f4ng su\u1ea5t \u0111i\u1ec7n ti\u00eau th\u1ee5 chi ti\u1ebft nh\u1ea5t"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/#Kha_nang_dien_la_gi\" >Kh\u1ea3 n\u0103ng \u0111i\u1ec7n l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/#Gia_tri_cua_nang_luong_dien_the_hien_bao_nhieu\" >Gi\u00e1 tr\u1ecb c\u1ee7a n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u1ec3 hi\u1ec7n bao nhi\u00eau?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/#Suc_manh_cua_cac_cong_cu_dien\" >S\u1ee9c m\u1ea1nh c\u1ee7a c\u00e1c c\u00f4ng c\u1ee5 \u0111i\u1ec7n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/#Volt_va_so_luong_mun_coc_tren_cac_cong_cu_dien\" >Volt v\u00e0 s\u1ed1 l\u01b0\u1ee3ng m\u1ee5n c\u00f3c tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 \u0111i\u1ec7n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/#Y_nghia_cua_nang_luong_duoc_neu_tren_moi_cong_cu_dien\" >\u00dd ngh\u0129a c\u1ee7a n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c n\u00eau tr\u00ean m\u1ed7i c\u00f4ng c\u1ee5 \u0111i\u1ec7n<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/#Cong_thuc_tinh_toan_nang_luong_dien\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/#Cong_thuc_tinh_toan_tieu_thu_dien_nang_cua_thiet_bi_dien\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/#Cong_thuc_tinh_toan_cong_suat_cua_dong_dien_xen_ke\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u00f4ng su\u1ea5t c\u1ee7a d\u00f2ng \u0111i\u1ec7n xen k\u1ebd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/#Cong_thuc_tinh_toan_nang_luong_dien_3_-phase\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n 3 -phase<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/y-nghia-cong-suat-dien-va-cach-tinh-cong-suat-dien-tieu-thu-chi-tiet-nhat\/#Mot_so_bai_tap_dung_luong_dien\" >M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp dung l\u01b0\u1ee3ng \u0111i\u1ec7n<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">N\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 n\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng, l\u00e0 m\u1ed9t s\u1ef1 xu\u1ea5t hi\u1ec7n kh\u00e1 ph\u1ed5 bi\u1ebfn trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u1ee7a con ng\u01b0\u1eddi, \u0111\u1eb7c bi\u1ec7t th\u01b0\u1eddng quan t\u00e2m khi ch\u1ecdn mua thi\u1ebft b\u1ecb \u0111i\u1ec7n. Tuy nhi\u00ean, h\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi ch\u1ec9 hi\u1ec3u \u0111\u01a1n gi\u1ea3n v\u1ec1 c\u00f4ng su\u1ea5t \u0111i\u1ec7n nh\u01b0ng kh\u00f4ng bi\u1ebft \u00fd ngh\u0129a c\u1ee7a \u0111i\u1ec7n l\u00e0 g\u00ec? Trong b\u00e0i vi\u1ebft h\u00f4m nay, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef s\u1ebd chia s\u1ebb v\u1edbi b\u1ea1n \u0111\u1ecbnh ngh\u0129a, ngh\u0129a l\u00e0 c\u0169ng nh\u01b0 c\u00e1ch t\u00ednh to\u00e1n m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng chi ti\u1ebft nh\u1ea5t. <\/p>\n<\/p>\n<p>                                                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img_default\/monkey3.png\" alt=\"\"><\/p>\n<p class=\"title\">H\u00e0ng tri\u1ec7u tr\u1ebb em \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c k\u1ef9 n\u0103ng ng\u00f4n ng\u1eef c\u1ee7a ch\u00fang th\u00f4ng qua c\u00e1c \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp c\u1ee7a kh\u1ec9<\/p>\n<p class=\"description\">\u0110\u0103ng k\u00fd ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u1ec1 c\u00e1c s\u1ea3n ph\u1ea9m v\u00e0 tuy\u1ebfn h\u1ecdc h\u1ecdc cho tr\u1ebb em.<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra t\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a b\u1ea1n *Vui l\u00f2ng ki\u1ec3m tra s\u1ed1 \u0111i\u1ec7n tho\u1ea1i h\u01a1n 2.000 t\u1eeb &amp; 6.000 c\u00e2u ti\u1ebfng Anh \u0111\u1ec3 ph\u00e1t tri\u1ec3n to\u00e0n di\u1ec7n 4 k\u1ef9 n\u0103ng ti\u1ebfng Anh t\u1ed1t &#8211; ti\u1ebfng Anh theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n \u0111\u1ea1i ph\u00e1t tri\u1ec3n kh\u1ea3 n\u0103ng EQ &amp; Vi\u1ec7t Nam *B\u1ea1n ch\u01b0a ch\u1ecdn b\u1ea5t k\u1ef3 m\u1ee5c n\u00e0o! \u0110\u0103ng k\u00fd t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Kha_nang_dien_la_gi\"><\/span>Kh\u1ea3 n\u0103ng \u0111i\u1ec7n l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\"><em>Kh\u1ea3 n\u0103ng \u0111i\u1ec7n l\u00e0 g\u00ec?<\/em> C\u00f4ng su\u1ea5t c\u1ee7a m\u1ed9t m\u1ea1ch l\u00e0 s\u1ee9c m\u1ea1nh m\u00e0 m\u1ea1ch ti\u00eau th\u1ee5 trong m\u1ed9t \u0111\u01a1n v\u1ecb th\u1eddi gian.<\/p>\n<p dir=\"ltr\">Ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng c\u00f3 gi\u00e1 tr\u1ecb \u0111i\u1ec7n m\u00e0 m\u1ea1ch ti\u00eau th\u1ee5 tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb th\u1eddi gian. Ngo\u00e0i ra, m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u0169ng \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng th\u1ec3 t\u00edch c\u1ee7a \u0111i\u1ec7n \u00e1p gi\u1eefa hai \u0111\u1ea7u c\u1ee7a m\u1ea1ch v\u00e0 d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua m\u1ea1ch \u0111\u00f3.<\/p>\n<p dir=\"ltr\">C\u00f4ng su\u1ea5t \u0111\u01b0\u1ee3c k\u00fd hi\u1ec7u l\u00e0 P v\u00e0 c\u00f3 \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u00e0 W.<\/p>\n<p dir=\"ltr\">Ngo\u00e0i \u0111\u01a1n v\u1ecb W -Measing, c\u00f4ng su\u1ea5t c\u0169ng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng c\u00e1c \u0111\u01a1n v\u1ecb KW v\u00e0 KVA. C\u1ea3 hai \u0111\u1ec1u l\u00e0 \u0111\u01a1n v\u1ecb \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u0103ng l\u1ef1c, nh\u01b0ng trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, ch\u00fang s\u1ebd kh\u00f4ng gi\u1ed1ng nhau. <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">KW (Kilo): L\u00e0 \u0111\u01a1n v\u1ecb t\u00ednh to\u00e1n c\u00f4ng su\u1ea5t c\u1ee7a m\u00e1y. S\u1ee9c m\u1ea1nh n\u00e0y cho th\u1ea5y s\u1ef1 thay \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh v\u00e0 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n theo c\u00f4ng th\u1ee9c: p = ui<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">KVA (Amme Volt Volt): Trong m\u1ea1ch DC ho\u1eb7c m\u1ea1ch l\u00fd t\u01b0\u1edfng, KVA t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi KW. Nh\u01b0ng \u0111\u1ed1i v\u1edbi m\u1ed9t m\u1ea1ch hi\u1ec7n t\u1ea1i xen k\u1ebd s\u1ebd xu\u1ea5t hi\u1ec7n c\u00f4ng su\u1ea5t ph\u1ea3n \u1ee9ng, ch\u1ec9 c\u1ea7n hi\u1ec3u ngay b\u00e2y gi\u1edd: kva = kW + c\u00f4ng su\u1ea5t ph\u1ea3n \u1ee9ng.<\/p>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bs-cong-suat-dien.jpg\" alt=\"N\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Gia_tri_cua_nang_luong_dien_the_hien_bao_nhieu\"><\/span>Gi\u00e1 tr\u1ecb c\u1ee7a n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u1ec3 hi\u1ec7n bao nhi\u00eau?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Gi\u00e1 tr\u1ecb c\u1ee7a n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n \u0111\u1ea1i di\u1ec7n cho t\u1ed1c \u0111\u1ed9 ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb \u0111i\u1ec7n. C\u1ee5 th\u1ec3, c\u00f4ng su\u1ea5t c\u00e0ng l\u1edbn, thi\u1ebft b\u1ecb c\u00e0ng ti\u00eau th\u1ee5.<\/p>\n<p>H\u01a1n n\u1eefa, gi\u00e1 tr\u1ecb c\u1ee7a c\u00f4ng su\u1ea5t \u0111i\u1ec7n r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c s\u1eed d\u1ee5ng v\u00e0 qu\u1ea3n l\u00fd \u0111i\u1ec7n. B\u1eb1ng c\u00e1ch bi\u1ebft c\u00f4ng su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n, ch\u00fang ta c\u00f3 th\u1ec3 t\u00ednh to\u00e1n l\u01b0\u1ee3ng ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111\u00f3 trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y cho ch\u00fang t\u00f4i s\u1eed d\u1ee5ng h\u1ee3p l\u00fd \u0111i\u1ec7n, ti\u1ebft ki\u1ec7m \u0111i\u1ec7n v\u00e0 chi ph\u00ed \u0111i\u1ec7n.<\/p>\n<p>Ngo\u00e0i ra, gi\u00e1 tr\u1ecb c\u1ee7a n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n c\u0169ng r\u1ea5t c\u00f3 \u00fd ngh\u0129a trong vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 l\u1eafp \u0111\u1eb7t c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n. Khi thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n, c\u1ea7n ph\u1ea3i t\u00ednh to\u00e1n c\u00f4ng su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u \u0111i\u1ec7n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111\u00f3.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Suc_manh_cua_cac_cong_cu_dien\"><\/span>S\u1ee9c m\u1ea1nh c\u1ee7a c\u00e1c c\u00f4ng c\u1ee5 \u0111i\u1ec7n <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">C\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c l\u00e0 s\u1ed1 l\u01b0\u1ee3ng \u00e1p \u0111\u1ea3o \u0111\u01b0\u1ee3c n\u00eau tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 ho\u1eb7c thi\u1ebft b\u1ecb \u0111i\u1ec7n.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Volt_va_so_luong_mun_coc_tren_cac_cong_cu_dien\"><\/span>Volt v\u00e0 s\u1ed1 l\u01b0\u1ee3ng m\u1ee5n c\u00f3c tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 \u0111i\u1ec7n <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Trong m\u1ed7i thi\u1ebft b\u1ecb \u0111i\u1ec7n gia \u0111\u00ecnh h\u00e0ng ng\u00e0y, b\u1ea1n s\u1ebd d\u1ec5 d\u00e0ng nh\u00ecn th\u1ea5y tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb c\u00f3 s\u1ed1 l\u01b0\u1ee3ng \u0111i\u1ec7n \u00e1p v\u00e0 m\u1ee5n c\u00f3c. <\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5, tr\u00ean b\u00f3ng \u0111\u00e8n \u0111i\u1ec7n, c\u00f3 220v &#8211; 25W, c\u00f3 ngh\u0129a l\u00e0, khi d\u00f2ng \u0111i\u1ec7n c\u00f3 \u0111i\u1ec7n \u00e1p 220V \u0111i qua b\u00f3ng \u0111\u00e8n, m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a b\u00f3ng \u0111\u00e8n l\u00e0 25W.<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-suat-dien-2.jpg\" alt=\"Tr\u00ean c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n nh\u01b0 b\u00f3ng \u0111\u00e8n s\u1ebd ghi l\u1ea1i c\u00e1c ch\u1ec9 s\u1ed1 n\u0103ng l\u01b0\u1ee3ng v\u00e0 \u0111i\u1ec7n \u00e1p. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Y_nghia_cua_nang_luong_duoc_neu_tren_moi_cong_cu_dien\"><\/span>\u00dd ngh\u0129a c\u1ee7a n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c n\u00eau tr\u00ean m\u1ed7i c\u00f4ng c\u1ee5 \u0111i\u1ec7n <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M\u1ed7i thi\u1ebft b\u1ecb v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n Khi \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c, m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a c\u00f4ng su\u1ea5t (ho\u1eb7c c\u00f4ng su\u1ea5t th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00f4ng su\u1ea5t) s\u1ebd b\u1eb1ng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng OTS \u0111\u01b0\u1ee3c n\u00eau tr\u00ean c\u00f4ng c\u1ee5 \u0111\u00f3.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u1ed7i c\u00f4ng c\u1ee5 \u0111i\u1ec7n cho th\u1ea5y c\u00f4ng su\u1ea5t m\u00e0 thi\u1ebft b\u1ecb ti\u00eau th\u1ee5 khi v\u1eadn h\u00e0nh b\u00ecnh th\u01b0\u1eddng.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-suat-dien-3.jpg\" alt=\"Kh\u1ea3 n\u0103ng \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u1ed9t s\u1ed1 c\u00f4ng c\u1ee5 \u0111i\u1ec7n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_nang_luong_dien\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Sau \u0111\u00e2y l\u00e0 c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u00f4ng su\u1ea5t trong ba tr\u01b0\u1eddng h\u1ee3p kh\u00e1c nhau, bao g\u1ed3m m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n, d\u00f2ng \u0111i\u1ec7n xen k\u1ebd v\u00e0 \u0111i\u1ec7n 3 -phase.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_tieu_thu_dien_nang_cua_thiet_bi_dien\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Th\u00f4ng th\u01b0\u1eddng, c\u00f4ng su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n s\u1ebd \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n \u0111\u1ea7y \u0111\u1ee7 tr\u00ean tem ho\u1eb7c nh\u00e3n n\u0103ng l\u01b0\u1ee3ng. Tuy nhi\u00ean, c\u00f4ng su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb s\u1ebd \u0111\u01b0\u1ee3c thay \u0111\u1ed5i trong kho\u1ea3ng th\u1eddi gian s\u1eed d\u1ee5ng do hi\u1ec7u su\u1ea5t gi\u1ea3m c\u1ee7a n\u00f3. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh dung l\u01b0\u1ee3ng thi\u1ebft b\u1ecb t\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n sau:<\/p>\n<table style=\"border-collapse: collapse;width: 100.019%\" border=\"1\">\n<tr>\n<td style=\"width: 98.9117%;background-color: #fff4f5;text-align: center\">\n<p>P = a\/t = ui<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P: Ti\u00eau th\u1ee5 m\u00e1y (W)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">A: Ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng (S\/H)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">T: Th\u1eddi gian s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb (S\/H)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">U: \u0110i\u1ec7n \u00e1p gi\u1eefa hai \u0111\u1ea7u c\u1ee7a m\u1ea1ch (V)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">I: Amperage ch\u1ea1y qua m\u1ea1ch (a)<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">T\u1eeb c\u00f4ng th\u1ee9c tr\u00ean, ch\u00fang ta c\u00f3 th\u1ec3 c\u00f3 bao nhi\u00eau thi\u1ebft b\u1ecb \u0111i\u1ec7n ti\u00eau th\u1ee5 \u0111i\u1ec7n. Do \u0111\u00f3, th\u1eadt d\u1ec5 d\u00e0ng \u0111\u1ec3 ch\u1ecdn thi\u1ebft b\u1ecb \u0111i\u1ec7n ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a gia \u0111\u00ecnh b\u1ea1n v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed. B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e1c nh\u00e0 m\u00e1y v\u00e0 nh\u00e0 m\u00e1y s\u1ebd c\u00f3 m\u1ed9t c\u00f4ng d\u1ee5ng h\u1ee3p l\u00fd. <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_cong_suat_cua_dong_dien_xen_ke\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u00f4ng su\u1ea5t c\u1ee7a d\u00f2ng \u0111i\u1ec7n xen k\u1ebd <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">T\u00ednh to\u00e1n m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a d\u00f2ng \u0111i\u1ec7n s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u \u0111\u01b0\u1ee3c m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n kh\u00e1c nhau. Trong tr\u01b0\u1eddng h\u1ee3p:<\/p>\n<table style=\"border-collapse: collapse;width: 100.019%\" border=\"1\">\n<tr>\n<td style=\"width: 98.9117%;background-color: #fff4f5\">\n<p style=\"text-align: center\">P = U.ICOS (\u03c6u &#8211; \u03c6i) = UICOS\u03c6<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P l\u00e0 c\u00f4ng su\u1ea5t c\u1ee7a m\u1ea1ch AC, thi\u1ebft b\u1ecb l\u00e0 W<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">U l\u00e0 \u0111i\u1ec7n \u00e1p hi\u1ec7u qu\u1ea3 gi\u1eefa hai \u0111\u1ea7u c\u1ee7a m\u1ea1ch xen k\u1ebd, thi\u1ebft b\u1ecb l\u00e0 V<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">T\u00f4i l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7u qu\u1ea3 gi\u1eefa hai \u0111\u1ea7u c\u1ee7a m\u1ea1ch xen k\u1ebd, thi\u1ebft b\u1ecb l\u00e0 V<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">COS: H\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t c\u1ee7a \u0111o\u1ea1n m\u1ea1ch AC.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">T\u00ednh to\u00e1n m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a m\u1ea1ch d\u00f2ng xen k\u1ebd s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh gi\u1ed1ng nh\u01b0 m\u1ea1ch c\u1ee7a d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i: <\/p>\n<table style=\"border-collapse: collapse;width: 100.019%\" border=\"1\">\n<tr>\n<td style=\"width: 98.9117%;background-color: #fff4f5\">\n<p style=\"text-align: center\">W = p*t<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">W: Ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng (m\u1ea1ch \u0111i\u1ec7n) (J)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P: C\u00f4ng su\u1ea5t m\u1ea1ch \u0111i\u1ec7n (W)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">T: Th\u1eddi gian s\u1eed d\u1ee5ng \u0111i\u1ec7n<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Hi\u1ec7n t\u1ea1i, \u0111\u1ec3 \u0111o m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n trong m\u1ea1ch AC, m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng s\u1eed d\u1ee5ng m\u00e1y \u0111o \u0111i\u1ec7n. T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n b\u1edfi thi\u1ebft b\u1ecb l\u00e0 KWH (\u0111i\u1ec7n):<\/p>\n<p dir=\"ltr\">1 \u0110i\u1ec7n = 1KWH = 1000 (W) .3600 (s) = 3.600.000 (j).<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_nang_luong_dien_3_-phase\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n 3 -phase <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u00e2y l\u00e0 m\u1ed9t hi\u1ec7n t\u1ea1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c nh\u00e0 m\u00e1y v\u00e0 nh\u00e0 m\u00e1y, \u0111\u00f2i h\u1ecfi ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y m\u00f3c v\u00e0 thi\u1ebft b\u1ecb c\u1ef1c k\u1ef3 ph\u1ee9c t\u1ea1p. D\u00f2ng \u0111i\u1ec7n 3 -phase cho hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng cao h\u01a1n v\u00e0 m\u1ea1nh h\u01a1n so v\u1edbi d\u00f2ng \u0111i\u1ec7n chung \u1edf nh\u00e0.<\/p>\n<p dir=\"ltr\">C\u00f3 2 c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n 3 -phase, bao g\u1ed3m:<\/p>\n<p dir=\"ltr\">Ph\u01b0\u01a1ng ph\u00e1p 1:<\/p>\n<table style=\"border-collapse: collapse;width: 100.019%\" border=\"1\">\n<tr>\n<td style=\"width: 98.9117%;background-color: #fff4f5\">\n<p style=\"text-align: center\">P = U.ICOS\u03c6<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">T\u00f4i l\u00e0 d\u00f2ng \u0111i\u1ec7n hi\u1ec7u qu\u1ea3 cho m\u1ed7i t\u1ea3i (a)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Cos\u03c6 l\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t cho m\u1ed7i t\u1ea3i.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c n\u00e0y t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00f4ng th\u1ee9c n\u0103ng l\u01b0\u1ee3ng c\u1ee7a m\u1ea1ch, nh\u01b0ng n\u00f3 v\u1eabn thay \u0111\u1ed5i m\u1ed9t ch\u00fat. S\u1ef1 kh\u00e1c bi\u1ec7t n\u1eb1m \u1edf gi\u00e1 tr\u1ecb I l\u00e0 d\u00f2ng \u0111i\u1ec7n qua m\u1ed7i t\u1ea3i v\u00e0 cos\u03c6 l\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t th\u00f4ng qua m\u1ed7i t\u1ea3i.<\/p>\n<p dir=\"ltr\">Ph\u01b0\u01a1ng ph\u00e1p 2:<\/p>\n<p dir=\"ltr\">Trong c\u00f4ng th\u1ee9c n\u00e0y, c\u00f3 m\u1ed9t s\u1ef1 kh\u00e1c bi\u1ec7t v\u00ec c\u00f3 m\u1ed9t y\u1ebfu t\u1ed1 b\u1ed5 sung c\u1ee7a d\u00f2ng \u0111i\u1ec7n th\u00f4ng qua t\u1ea3i. <\/p>\n<table style=\"border-collapse: collapse;width: 100.019%\" border=\"1\">\n<tr>\n<td style=\"width: 98.9117%;background-color: #fff4f5;text-align: center\">\n<p>P = (u1*i1 + u2*i2 + u3*i3)*h<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">U1, U2, U3: \u0110i\u1ec7n \u00e1p \u0111i qua t\u1eebng pha (V)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">I1, i2, i3: c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a d\u00f2ng \u0111i\u1ec7n \u0111i qua t\u1eebng giai \u0111o\u1ea1n (a)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">H: Th\u1eddi gian \u0111\u1ec3 t\u00ednh d\u00f2ng \u0111i\u1ec7n qua m\u1ea1ch (h)<\/p>\n<\/li>\n<\/ul>\n<p>Xem th\u00eam:<\/p>\n<ol>\n<li>L\u00fd thuy\u1ebft &amp; t\u1eadp th\u1ec3 d\u1ee5c t\u1eeb s\u1eaft v\u00e0 th\u00e9p &#8211; Ch\u1ea5t \u0111i\u1ec7n nh\u1ea5t t\u1ed1t nh\u1ea5t (LY 9 B\u00e0i 25)<\/li>\n<li>N\u0103ng l\u1ef1c l\u00e0 g\u00ec? T\u00f3m t\u1eaft c\u00e1c b\u00e0i t\u1eadp l\u00fd thuy\u1ebft v\u00e0 th\u1ef1c h\u00e0nh v\u1ec1 n\u0103ng l\u1ef1c<\/li>\n<\/ol>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_bai_tap_dung_luong_dien\"><\/span>M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp dung l\u01b0\u1ee3ng \u0111i\u1ec7n <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp \u0111\u1ec3 \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o v\u00e0 th\u1ef1c h\u00e0nh t\u1ea1i nh\u00e0:<\/p>\n<p dir=\"ltr\">B\u00e0i 1: \u0110i\u1ec1u n\u00e0o sau \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n m\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng P c\u1ee7a \u0111o\u1ea1n m\u1ea1ch \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi \u0111i\u1ec7n \u00e1p u, d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua \u0111\u00f3 c\u01b0\u1eddng \u0111\u1ed9 I v\u00e0 \u0111i\u1ec7n tr\u1edf l\u00e0 r?<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P = ui<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P = u\/i <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P = u^2\/r<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P = i^2.r<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">=&gt; Ch\u1ecdn B. P = U\/I v\u00ec c\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng p = ui = i^2.r = u^2\/r n\u00ean tr\u1ea3 l\u1eddi B sai.<\/p>\n<p dir=\"ltr\">B\u00e0i 2: Ch\u1ecdn \u0111\u00fang c\u00e2u. <\/p>\n<p dir=\"ltr\">H\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t trong m\u1ea1ch AC bao g\u1ed3m R, L, C n\u1ed1i ti\u1ebfp v\u1edbi ZL = ZC:<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">b\u1eb1ng 0<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">b\u1eb1ng 1<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">ph\u1ee5 thu\u1ed9c v\u00e0o r<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Ph\u1ee5 thu\u1ed9c v\u00e0o ZC\/ZL<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">M\u1ea1ch RLC \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i n\u1ed1i ti\u1ebfp v\u1edbi ZL = ZC<\/p>\n<p dir=\"ltr\">M\u1ea1ch c\u1ed9ng h\u01b0\u1edfng n\u00ean cos\u2205 = r\/z = r\/r = 1<\/p>\n<p dir=\"ltr\">=&gt; Ch\u1ecdn c\u00e2u tr\u1ea3 l\u1eddi b<\/p>\n<p dir=\"ltr\">B\u00e0i 3: Tr\u00ean m\u1ed9t b\u00f3ng \u0111\u00e8n v\u1edbi 12V &#8211; 6W<\/p>\n<p dir=\"ltr\">a) \u0111\u01b0a ra t\u1ea7m quan tr\u1ecdng c\u1ee7a nh\u1eefng con s\u1ed1 n\u00e0y<\/p>\n<p dir=\"ltr\">b) T\u00ednh c\u01b0\u1eddng \u0111\u1ed9 \u0111\u1ecbnh m\u1ee9c c\u1ee7a d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u00e8n<\/p>\n<p dir=\"ltr\">c) T\u00ednh \u0111i\u1ec7n tr\u1edf c\u1ee7a \u0111\u00e8n sau \u0111\u00f3<\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">a) S\u1ed1 12V ch\u1ec9 ra \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf hai \u0111\u1ea7u c\u1ee7a b\u00f3ng \u0111\u00e8n cho \u00e1nh s\u00e1ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n<p dir=\"ltr\">S\u1ed1 6W ch\u1ec9 ra s\u1ee9c m\u1ea1nh \u0111\u1ecbnh m\u1ee9c c\u1ee7a \u0111\u00e8n.<\/p>\n<p dir=\"ltr\">b) C\u01b0\u1eddng \u0111\u1ed9 \u0111\u1ecbnh m\u1ee9c c\u1ee7a d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua \u0111\u00e8n l\u00e0:<\/p>\n<p dir=\"ltr\">Ch\u00fang ta c\u00f3: p = ui \u21d2 i = p\/u = 6\/12 = 0,5a<\/p>\n<p dir=\"ltr\">c) \u0110i\u1ec7n tr\u1edf c\u1ee7a \u0111\u00e8n sau \u0111\u00f3: r = u^2\/p = 12^2\/6 = 24\u03a9<\/p>\n<p dir=\"ltr\">B\u00e0i h\u1ecdc 4: C\u00f3 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p, khi b\u00f3ng \u0111\u00e8n ph\u00e1 v\u1ee1 t\u00f3c, ch\u00fang ta c\u00f3 th\u1ec3 l\u1eafc hai \u0111\u1ea7u c\u1ee7a s\u1ee3i d\u00e2y b\u1ecb g\u00e3y \u1edf ch\u1ed7 n\u00f3 b\u1ecb g\u00e3y v\u1edbi nhau v\u00e0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u00f3ng \u0111\u00e8n n\u00e0y trong m\u1ed9t th\u1eddi gian d\u00e0i h\u01a1n. H\u1ecfi sau \u0111\u00f3 s\u1ee9c m\u1ea1nh v\u00e0 \u0111\u1ed9 s\u00e1ng c\u1ee7a b\u00f3ng \u0111\u00e8n l\u1edbn h\u01a1n ho\u1eb7c nh\u1ecf h\u01a1n tr\u01b0\u1edbc khi t\u00f3c v\u1ee1? T\u1ea1i sao?<\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">Khi b\u1ecb h\u1ecfng v\u00e0 k\u1ebft n\u1ed1i, d\u00e2y c\u1ee7a \u0111\u00e8n ng\u1eafn h\u01a1n tr\u01b0\u1edbc, do \u0111\u00f3, \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y t\u00f3c nh\u1ecf h\u01a1n tr\u01b0\u1edbc. Trong khi \u0111\u00f3, \u0111i\u1ec7n \u00e1p gi\u1eefa hai \u0111\u1ea7u c\u1ee7a d\u00e2y v\u1eabn gi\u1ed1ng nhau, v\u00ec v\u1eady c\u00f4ng su\u1ea5t p = u^2\/r s\u1ebd l\u1edbn h\u01a1n. V\u00ec v\u1eady, \u0111\u00e8n s\u1ebd s\u00e1ng h\u01a1n tr\u01b0\u1edbc.<\/p>\n<p dir=\"ltr\">B\u00e0i h\u1ecdc 5: Tr\u00ean b\u1ebfp g\u1ea1o v\u1edbi 220V &#8211; 528W<\/p>\n<p dir=\"ltr\">a) T\u00ednh c\u01b0\u1eddng \u0111\u1ed9 \u0111\u1ecbnh m\u1ee9c c\u1ee7a d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua n\u1ed3i <\/p>\n<p dir=\"ltr\">b) T\u00ednh \u0111i\u1ec7n tr\u1edf c\u1ee7a n\u1ed3i khi n\u1ed3i ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng<\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">a) C\u01b0\u1eddng \u0111\u1ed9 \u0111\u1ecbnh m\u1ee9c c\u1ee7a d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua ch\u1ea3o c\u1ee7a n\u1ed3i l\u00e0:<\/p>\n<p dir=\"ltr\">Ch\u00fang ta c\u00f3: p = ui \u21d2 i = p\/u = 528\/220 = 2.4a<\/p>\n<p dir=\"ltr\">b) \u0110i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y b\u1eafn khi n\u1ed3i ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng l\u00e0:<\/p>\n<p dir=\"ltr\">R = u\/i = 220\/2.4 = 91.7\u03a9<\/p>\n<p dir=\"ltr\">B\u00e0i vi\u1ebft tr\u00ean \u0111\u00e3 t\u00f3m t\u1eaft c\u00e1c \u0111\u1ecbnh ngh\u0129a, \u00fd ngh\u0129a c\u0169ng nh\u01b0 c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u0111i\u1ec7n. Hy v\u1ecdng, th\u00f4ng qua ki\u1ebfn \u200b\u200bth\u1ee9c trong b\u00e0i vi\u1ebft, b\u1ea1n c\u00f3 th\u1ec3 hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng r\u1ea5t nhi\u1ec1u trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u1ee7a b\u1ea1n. Kh\u1ec9 c\u1ea3m \u01a1n b\u1ea1n \u0111\u00e3 \u0111\u1ecdc b\u00e0i b\u00e1o.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>N\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 n\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng, l\u00e0 m\u1ed9t s\u1ef1 xu\u1ea5t hi\u1ec7n kh\u00e1 ph\u1ed5 bi\u1ebfn trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u1ee7a con ng\u01b0\u1eddi, \u0111\u1eb7c bi\u1ec7t th\u01b0\u1eddng quan t\u00e2m khi ch\u1ecdn mua thi\u1ebft b\u1ecb \u0111i\u1ec7n. Tuy nhi\u00ean, h\u1ea7u h\u1ebft m\u1ecdi ng\u01b0\u1eddi ch\u1ec9 hi\u1ec3u \u0111\u01a1n gi\u1ea3n v\u1ec1 c\u00f4ng su\u1ea5t \u0111i\u1ec7n nh\u01b0ng&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-19645","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19645","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=19645"}],"version-history":[{"count":1,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19645\/revisions"}],"predecessor-version":[{"id":24397,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19645\/revisions\/24397"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=19645"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=19645"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=19645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}