{"id":19995,"date":"2025-07-07T12:45:05","date_gmt":"2025-07-07T05:45:05","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=19995"},"modified":"2025-07-07T13:05:08","modified_gmt":"2025-07-07T06:05:08","slug":"tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/","title":{"rendered":"T\u1ed5ng h\u1ee3p ki\u1ebfn th\u1ee9c li\u00ean quan \u0111\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n d\u1ec5 hi\u1ec3u"},"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\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Cuong_do_hien_tai_la_gi\" >C\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7n t\u1ea1i l\u00e0 g\u00ec<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Dinh_nghia_cua_cuong_do_hien_tai\" >\u0110\u1ecbnh ngh\u0129a c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7n t\u1ea1i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Don_vi_do_cuong_do_hien_tai\" >\u0110\u01a1n v\u1ecb \u0111o c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7n t\u1ea1i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Thiet_bi_do_cuong_do\" >Thi\u1ebft b\u1ecb \u0111o c\u01b0\u1eddng \u0111\u1ed9<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Phan_loai_cuong_do_hien_tai\" >Ph\u00e2n lo\u1ea1i c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7n t\u1ea1i<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#DC_cuong_do\" >DC c\u01b0\u1eddng \u0111\u1ed9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#AC_Trung\" >AC Trung<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Tom_tat_cong_thuc_tinh_toan_cuong_do\" >T\u00f3m t\u1eaft c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Cong_thuc_tinh_toan_dong_trung_binh\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n d\u00f2ng trung b\u00ecnh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Cong_thuc_tinh_toan_dong_dien_tuc_thoi\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n t\u1ee9c th\u1eddi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Cong_thuc_tinh_toan_cuong_do_thong_qua_luat_om\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 th\u00f4ng qua lu\u1eadt \u00f4m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Tinh_toan_cuong_do_trong_mach_theo_luat_om\" >T\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 trong m\u1ea1ch theo lu\u1eadt \u00f4m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Cong_thuc_tinh_toan_dong_dien_hieu_qua\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n hi\u1ec7u qu\u1ea3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Cong_thuc_tinh_toan_dong_dien_dinh_muc\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Cong_thuc_tinh_toan_dong_toi_da\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n d\u00f2ng t\u1ed1i \u0111a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Cong_thuc_tinh_toan_cuong_do_dong_chay_bao_hoa\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng ch\u1ea3y b\u00e3o h\u00f2a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Cong_thuc_tinh_toan_cuong_do_3_-phase\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 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-18\" href=\"https:\/\/www.ckconitsha.com\/vn\/tong-hop-kien-thuc-lien-quan-den-cuong-do-dong-dien-de-hieu\/#Y_nghia_ung_dung_dong_dien_trong_cuoc_song\" >\u00dd ngh\u0129a &amp; \u1ee9ng d\u1ee5ng d\u00f2ng \u0111i\u1ec7n trong cu\u1ed9c s\u1ed1ng<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">Ki\u1ebfn th\u1ee9c v\u1ec1 d\u00f2ng \u0111i\u1ec7n kh\u00f4ng kh\u00f3 nh\u01b0 c\u00e1c ch\u01b0\u01a1ng kh\u00e1c, nh\u01b0ng n\u00f3 c\u1ef1c k\u1ef3 quan tr\u1ecdng b\u1edfi v\u00ec \u0111\u00e2y l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a v\u1eadt l\u00fd 7. Th\u00f4ng qua c\u01b0\u1eddng \u0111\u1ed9, ch\u00fang ta c\u00f3 th\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c \u0111i\u1ec3m m\u1ea1nh ho\u1eb7c \u0111i\u1ec3m y\u1ebfu c\u1ee7a d\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch. V\u00e0 \u0111\u1ec3 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 hi\u1ec7n t\u1ea1i l\u00e0 g\u00ec v\u00e0 c\u00f4ng th\u1ee9c hi\u1ec7n t\u1ea1i t\u00ednh to\u00e1n hi\u1ec7n t\u1ea1i, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef mu\u1ed1n chia s\u1ebb b\u1ea3n t\u00f3m t\u1eaft b\u00e0i vi\u1ebft v\u1ec1 ki\u1ebfn \u200b\u200bth\u1ee9c li\u00ean quan \u0111\u1ebfn d\u00f2ng \u0111i\u1ec7n d\u1ec5 hi\u1ec3u trong n\u1ed9i dung c\u1ee7a b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/image\/600x480.png\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cuong_do_hien_tai_la_gi\"><\/span>C\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7n t\u1ea1i l\u00e0 g\u00ec <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">T\u00ecm hi\u1ec3u \u0111\u1ecbnh ngh\u0129a, \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng v\u00e0 thi\u1ebft b\u1ecb \u0111o c\u01b0\u1eddng \u0111\u1ed9 <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dinh_nghia_cua_cuong_do_hien_tai\"><\/span>\u0110\u1ecbnh ngh\u0129a c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7n t\u1ea1i <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">C\u01b0\u1eddng \u0111\u1ed9 l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng \u0111i\u1ec3n h\u00ecnh cho c\u01b0\u1eddng \u0111\u1ed9 ho\u1eb7c \u0111i\u1ec3m y\u1ebfu c\u1ee7a d\u00f2ng \u0111i\u1ec7n, s\u1ed1 l\u01b0\u1ee3ng s\u1ed1 \u0111i\u1ec7n t\u1eed \u0111i qua d\u00e2y d\u1eabn c\u1ee7a d\u00e2y d\u1eabn trong \u0111\u01a1n v\u1ecb th\u1eddi gian. N\u1ebfu d\u00f2ng \u0111i\u1ec7n c\u00e0ng m\u1ea1nh, ampe v\u00e0 ng\u01b0\u1ee3c l\u1ea1i c\u00e0ng l\u1edbn.<\/p>\n<p dir=\"ltr\">Bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 l\u00e0 t\u00f4i<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cuong-do-dong-dien-1.jpg\" alt=\"H\u00ecnh \u1ea3nh minh h\u1ecda ampe. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Don_vi_do_cuong_do_hien_tai\"><\/span>\u0110\u01a1n v\u1ecb \u0111o c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7n t\u1ea1i <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng c\u01b0\u1eddng \u0111\u1ed9 l\u00e0 AMPE (A), Miliampe (MA) ho\u1eb7c Microamp (\u03bcA). \u0110\u00e2y l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng c\u01b0\u1eddng \u0111\u1ed9 ti\u00eau chu\u1ea9n theo h\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng qu\u1ed1c t\u1ebf v\u00e0 n\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t theo t\u00ean c\u1ee7a nh\u00e0 v\u1eadt l\u00fd ng\u01b0\u1eddi Ph\u00e1p Andr\u00e9 Marie Amp\u00e8re.<\/p>\n<p dir=\"ltr\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e1ch \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng t\u1ed1c \u0111\u1ed9:<\/p>\n<ul>\n<li dir=\"ltr\">1 A = 1000 Ma<\/li>\n<li dir=\"ltr\">1 mA = 1000 \u03bcA<\/li>\n<li dir=\"ltr\">1 ma = 11000 a<\/li>\n<li dir=\"ltr\">1 \u03bcA = 11000 Ma = 11000000 A<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Thiet_bi_do_cuong_do\"><\/span>Thi\u1ebft b\u1ecb \u0111o c\u01b0\u1eddng \u0111\u1ed9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Hi\u1ec7n t\u1ea1i, c\u00f3 nhi\u1ec1u thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o d\u00f2ng \u0111i\u1ec7n kh\u00e1c nhau. D\u01b0\u1edbi \u0111\u00e2y kh\u1ec9 s\u1ebd \u0111\u1eb7t t\u00ean cho b\u1ea1n 3 thi\u1ebft b\u1ecb ph\u1ed5 bi\u1ebfn \u0111\u1ec3 \u0111o d\u00f2ng \u0111i\u1ec7n c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n<p dir=\"ltr\">AMMETER: <\/p>\n<p dir=\"ltr\">\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o d\u00f2ng \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n khi s\u1eed d\u1ee5ng.<\/p>\n<p dir=\"ltr\">Thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1eb1ng c\u00e1ch k\u1eb9p c\u00e1c k\u00ecm th\u00e0nh d\u00e2y ngu\u1ed3n cho thi\u1ebft b\u1ecb \u0111i\u1ec7n v\u00e0 d\u00f2ng \u0111i\u1ec7n (i) s\u1ebd hi\u1ec3n th\u1ecb tr\u00ean m\u00e0n h\u00ecnh c\u1ee7a k\u00ecm.<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cuong-do-dong-dien-2.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a \u0111\u1ebf. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\">AMMETER: <\/p>\n<p dir=\"ltr\">\u0110\u00e2y l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 v\u00e0 \u0111i\u1ec3m y\u1ebfu c\u1ee7a d\u00f2ng \u0111i\u1ec7n v\u1edbi \u0111\u01a1n v\u1ecb \u0111o AMPE (A) ho\u1eb7c Miliampe (MA).<\/p>\n<p dir=\"ltr\">M\u1ed7i ampe k\u1ebf s\u1ebd c\u00f3 gi\u1edbi h\u1ea1n v\u00e0 ph\u00e2n chia \u0111o l\u01b0\u1eddng kh\u00e1c nhau, v\u1edbi m\u1ed9t s\u1ed1 lo\u1ea1i ampe k\u1ebf v\u1edbi ph\u00e2n chia nh\u1ecf nh\u1ea5t ch\u1ec9 0,5 mA.<\/p>\n<p dir=\"ltr\">Tr\u00ean thi\u1ebft b\u1ecb n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y c\u00e1c d\u1ea5u (+) t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u00e3 PIN d\u01b0\u01a1ng v\u00e0 d\u1ea5u ( -) v\u1edbi ch\u00e2n \u00e2m thanh. \u0110\u00e2y l\u00e0 \u0111i\u1ec3m \u0111\u1ec3 ph\u00e2n bi\u1ec7t 2 ch\u00e2n v\u00e0 c\u00e0i \u0111\u1eb7t chu\u1ed7i ph\u00f9 h\u1ee3p. \u1ede d\u01b0\u1edbi c\u00f9ng c\u1ee7a thi\u1ebft b\u1ecb, thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c trang b\u1ecb n\u00fat c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 \u0111\u01b0a ampe k\u1ebf \u0111\u1ebfn s\u1ed1 0.<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cuong-do-dong-dien-3.jpg\" alt=\"H\u00ecnh \u1ea3nh h\u00ecnh \u1ea3nh minh h\u1ecda ampeter. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\">\u0110\u1ed3ng h\u1ed3 t\u1eeb t\u00ednh:<\/p>\n<p dir=\"ltr\">\u0110\u1ed3ng h\u1ed3 ph\u1ed5 qu\u00e1t l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng \u0111\u1ec3 \u0111o d\u00f2ng \u0111i\u1ec7n.<\/p>\n<p dir=\"ltr\">Ng\u01b0\u1eddi d\u00f9ng mu\u1ed1n \u0111o c\u01b0\u1eddng \u0111\u1ed9 v\u1edbi thi\u1ebft b\u1ecb n\u00e0y c\u1ea7n \u0111\u1eb7t ch\u1ee9c n\u0103ng ph\u00f9 h\u1ee3p v\u1edbi n\u00f3.<\/p>\n<p dir=\"ltr\">Thi\u1ebft b\u1ecb n\u00e0y c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u v\u00e0 c\u0169ng c\u1ea7n ch\u1ecdn ch\u1ee9c n\u0103ng th\u00edch h\u1ee3p.<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cuong-do-dong-dien-4.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o ph\u1ed5 qu\u00e1t. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\">M\u1ed7i thi\u1ebft b\u1ecb \u0111o c\u00f3 m\u1ed9t c\u00e1ch kh\u00e1c nhau \u0111\u1ec3 \u0111o d\u00f2ng \u0111i\u1ec7n. Do \u0111\u00f3, kh\u1ec9 s\u1ebd ch\u1ec9 ra hai ph\u01b0\u01a1ng ph\u00e1p \u0111o th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, l\u00e0 m\u00e9t v\u00e0 \u0111\u1ed3ng h\u1ed3 \u0111o ph\u1ed5 qu\u00e1t \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng khi c\u1ea7n thi\u1ebft.<\/p>\n<p dir=\"ltr\">C\u00e1ch \u0111o ampe ampe hi\u1ec7n t\u1ea1i:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 1: Ch\u1ecdn ampe k\u1ebf v\u1edbi gi\u1edbi h\u1ea1n \u0111o v\u00e0 ph\u00e2n chia theo thi\u1ebft b\u1ecb c\u1ea7n \u0111o.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 2: Quan s\u00e1t v\u00e0 \u0111i\u1ec1u ch\u1ec9nh kim c\u1ee7a ampe k\u1ebf \u0111\u1ec3 m\u1ee9c 0.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 3: V\u1ebd s\u01a1 \u0111\u1ed3 m\u1ea1ch tr\u00ean gi\u1ea5y v\u00e0 ti\u1ebfn h\u00e0nh g\u1eafn ampe k\u1ebf v\u1edbi d\u00e2y d\u1eabn. Trong b\u01b0\u1edbc n\u00e0y, b\u1ea1n c\u1ea7n l\u01b0u \u00fd r\u1eb1ng d\u00e2y d\u1eabn r\u1ea5t c\u1ea9n th\u1eadn, do \u0111\u00f3 d\u00f2ng \u0111i\u1ec7n \u0111i v\u00e0o ch\u00e2n d\u01b0\u01a1ng (+) v\u00e0 \u0111i ra \u1edf ch\u00e2n \u00e2m thanh (-) c\u1ee7a ampe k\u1ebf. Kh\u00f4ng tr\u1ef1c ti\u1ebfp l\u1ea5y c\u00e1c ch\u1ed1t ampe k\u1ebf v\u00e0o hai c\u1ef1c c\u1ee7a ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng v\u00ec n\u00f3 c\u00f3 th\u1ec3 g\u00e2y ra thi\u1ec7t h\u1ea1i cho ampe k\u1ebf.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 4: Vui l\u00f2ng quan s\u00e1t \u0111\u01b0\u1eddng kim c\u1ee7a ampe k\u1ebf, kim trong \u0111\u00f3 s\u1ed1 l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111o.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">\u0110\u1ec3 c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng c\u00e1c \u1ee9ng su\u1ea5t hi\u1ec7n t\u1ea1i xen k\u1ebd, b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 1: Ch\u1ecdn ampe k\u1ebf v\u1edbi gi\u1edbi h\u1ea1n \u0111o v\u00e0 ph\u00e2n t\u00e1ch nh\u1ecf nh\u1ea5t.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 2: C\u1eafm \u0111\u1ed3ng h\u1ed3 \u0111o m\u00e0u \u0111en v\u00e0o \u0111\u1ea7u c\u1ee7a \u00e2m (-), thanh m\u00e0u \u0111\u1ecf v\u00e0o l\u1ed7 (a) N\u1ebfu \u0111\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111o l\u1edbn, l\u1ed7 (ma) n\u1ebfu d\u00f2ng \u0111i\u1ec7n nh\u1ecf.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 3: \u0110i\u1ec1u ch\u1ec9nh thang \u0111o v\u00e0 d\u00f2ng \u0111i\u1ec7n th\u00e0nh AC<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 4: K\u1ebft n\u1ed1i \u0111\u1ed3ng h\u1ed3 m\u00e0u \u0111\u1ecf v\u1edbi c\u1ef1c d\u01b0\u01a1ng (+), thanh m\u00e0u \u0111en v\u1ec1 ph\u00eda c\u1ef1c \u00e2m (-) theo h\u01b0\u1edbng c\u1ee7a d\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 5: Quan s\u00e1t \u0111\u01b0\u1eddng kim \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u00ean m\u00e0n h\u00ecnh.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Phan_loai_cuong_do_hien_tai\"><\/span>Ph\u00e2n lo\u1ea1i c\u01b0\u1eddng \u0111\u1ed9 hi\u1ec7n t\u1ea1i<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">T\u00ecm hai lo\u1ea1i d\u00f2ng \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp v\u00e0 d\u00f2ng \u0111i\u1ec7n xen k\u1ebd.  <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"DC_cuong_do\"><\/span>DC c\u01b0\u1eddng \u0111\u1ed9 <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u00e2y l\u00e0 m\u1ed9t t\u00ean kh\u00e1c c\u1ee7a d\u00f2ng \u0111i\u1ec7n d\u00e2n s\u1ef1 (bi\u1ec3u t\u01b0\u1ee3ng DC) m\u00e0 ch\u00fang ta th\u01b0\u1eddng s\u1eed d\u1ee5ng trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y. T\u1ea5t c\u1ea3 c\u00e1c electron b\u00ean trong d\u00f2ng \u0111i\u1ec7n n\u00e0y di chuy\u1ec3n theo c\u00f9ng m\u1ed9t h\u01b0\u1edbng theo m\u1ed9t h\u01b0\u1edbng nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 t\u1ea1o ra \u0111i\u1ec7n t\u00edch.<\/p>\n<p dir=\"ltr\">Hi\u1ec7n t\u1ea1i DC c\u00f3 th\u1ec3 t\u0103ng v\u00e0 gi\u1ea3m t\u00f9y thu\u1ed9c v\u00e0o nhu c\u1ea7u s\u1eed d\u1ee5ng. Tuy nhi\u00ean, n\u00f3 kh\u00f4ng th\u1ec3 thay \u0111\u1ed5i h\u01b0\u1edbng c\u1ee7a d\u00f2ng \u0111i\u1ec7n v\u00e0 n\u00f3 ho\u00e0n to\u00e0n c\u1ed1 \u0111\u1ecbnh. V\u00ec v\u1eady, n\u00f3 \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh r\u1eb1ng bu\u1ed5i chi\u1ec1u t\u1eeb d\u01b0\u01a1ng (+) \u0111\u1ebfn ti\u00eau c\u1ef1c (-)<\/p>\n<p dir=\"ltr\">\u0110\u1ec3 \u0111o gi\u00e1 tr\u1ecb c\u1ee7a d\u00f2ng \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp, m\u1ecdi ng\u01b0\u1eddi s\u1ebd s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb g\u1ecdi l\u00e0 \u0111\u1ed3ng h\u1ed3 \u0111o ph\u1ed5 qu\u00e1t.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"AC_Trung\"><\/span>AC Trung <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cuong-do-dong-dien-5.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m hi\u1ec7n t\u1ea1i xen k\u1ebd. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\">D\u00f2ng \u0111i\u1ec7n xen k\u1ebd (\u0111\u01b0\u1ee3c t\u01b0\u1ee3ng tr\u01b0ng l\u00e0 AC ho\u1eb7c ~) l\u00e0 d\u00f2ng \u0111i\u1ec7n v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 thay \u0111\u1ed5i trong m\u1ed9t chu k\u1ef3 nh\u1ea5t \u0111\u1ecbnh c\u1ee7a c\u00e1c electron b\u00ean trong. D\u00f2ng \u0111i\u1ec7n xen k\u1ebd s\u1ebd thay \u0111\u1ed5i li\u00ean t\u1ee5c v\u00e0 do \u0111\u00f3 c\u00f3 th\u1ec3 duy tr\u00ec t\u1ea3i \u0111i\u1ec7n l\u1edbn v\u00e0 li\u00ean t\u1ee5c trong m\u1ed9t th\u1eddi gian d\u00e0i.<\/p>\n<p dir=\"ltr\">S\u00ea -ri AC \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb c\u00e1c thi\u1ebft b\u1ecb m\u00e1y ph\u00e1t \u0111i\u1ec7n hi\u1ec7n t\u1ea1i xen k\u1ebd c\u1ee7a c\u00e1c m\u00e1y ph\u00e1t l\u1edbn. Nh\u1eefng ng\u01b0\u1eddi kh\u00e1c \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh t\u1eeb d\u00f2ng DC th\u00f4ng qua c\u00e1c m\u1ea1ch \u0111i\u1ec7n v\u1edbi c\u00e1c c\u1ea5u tr\u00fac c\u1ee5 th\u1ec3.<\/p>\n<p dir=\"ltr\">V\u1edbi m\u1ed9t ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng \u0111a d\u1ea1ng nh\u01b0 v\u1eady, ch\u00fang ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ngu\u1ed3n AC trong h\u1ec7 th\u1ed1ng l\u01b0\u1edbi qu\u1ed1c gia. T\u1eeb \u0111\u00f3, ph\u00e2n ph\u1ed1i \u0111i\u1ec7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i cho t\u1ea5t c\u1ea3 c\u00e1c khu v\u1ef1c v\u00e0 h\u00e0ng tri\u1ec7u gia \u0111\u00ecnh v\u1edbi nhi\u1ec1u thi\u1ebft b\u1ecb \u0111\u01a1n gi\u1ea3n.<\/p>\n<p dir=\"ltr\">H\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n gia \u0111\u00ecnh hi\u1ec7n \u0111ang s\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n xen k\u1ebd nh\u01b0 TV, l\u00f2 s\u01b0\u1edfi, qu\u1ea1t c\u00f4ng nghi\u1ec7p, b\u1ebfp g\u1ea1o, m\u00e1y gi\u1eb7t, b\u1ebfp \u0111i\u1ec7n, b\u00f3ng \u0111\u00e8n, &#8230;. <\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tom_tat_cong_thuc_tinh_toan_cuong_do\"><\/span>T\u00f3m t\u1eaft c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Sau \u0111\u00e2y l\u00e0 m\u1ed9t b\u1ea3n t\u00f3m t\u1eaft c\u00e1c c\u00f4ng th\u1ee9c li\u00ean quan \u0111\u1ebfn c\u01b0\u1eddng \u0111\u1ed9. <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_dong_trung_binh\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n d\u00f2ng trung b\u00ecnh <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/A%CC%89nh_chu%CC%A3p_Ma%CC%80n_hi%CC%80nh_2022-06-12_lu%CC%81c_10.44.31_CH.png\" alt=\"\" width=\"350\" height=\"76\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">ITB l\u00e0 d\u00f2ng \u0111i\u1ec7n trung b\u00ecnh (a).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0394T l\u00e0 m\u1ed9t th\u1eddi gian nh\u1ecf.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Q l\u00e0 l\u01b0\u1ee3ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c xem x\u00e9t trong giai \u0111o\u1ea1n \u0394T (c). <\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_dong_dien_tuc_thoi\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n t\u1ee9c th\u1eddi <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/A%CC%89nh_chu%CC%A3p_Ma%CC%80n_hi%CC%80nh_2022-06-12_lu%CC%81c_10.46.49_CH.png\" alt=\"\" width=\"350\" height=\"78\"><\/p>\n<p dir=\"ltr\">Ho\u1eb7c: <\/p>\n<table style=\"border-collapse: collapse;border-color: #4e4c50;border-style: solid\" border=\"0.5px\">\n<tr>\n<td style=\"border: 0.5px solid #4e4c50\">\n<p dir=\"ltr\" style=\"text-align: center\">I = p: u<\/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\">I: L\u00e0 ampe (a).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P: l\u00e0 m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n (KW)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">U: l\u00e0 \u0111i\u1ec7n \u00e1p (V).<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">C\u00e1c c\u00f4ng th\u1ee9c kh\u00e1c: <\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/A%CC%89nh_chu%CC%A3p_Ma%CC%80n_hi%CC%80nh_2022-06-12_lu%CC%81c_10.46.49_CH.png\" alt=\"\" width=\"350\" height=\"78\"><\/p>\n<\/p>\n<p dir=\"ltr\">Ho\u1eb7c: <\/p>\n<table style=\"border-collapse: collapse;border-color: #4e4c50;border-style: solid\">\n<tr>\n<td style=\"border: 0.5px solid #4e4c50\">\n<p dir=\"ltr\" style=\"text-align: center\">U = ir<\/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\">I: \u0110\u00f3 l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 (a).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">U: l\u00e0 \u0111i\u1ec7n \u00e1p (V).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">R: l\u00e0 \u0111i\u1ec7n tr\u1edf (\u03c9).<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_cuong_do_thong_qua_luat_om\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 th\u00f4ng qua lu\u1eadt \u00f4m<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Lu\u1eadt \u00f4m l\u00e0 m\u1ed9t lu\u1eadt v\u1eadt l\u00fd v\u00e0o s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o d\u00f2ng \u0111i\u1ec7n c\u1ee7a \u0111i\u1ec7n \u00e1p v\u00e0 \u0111i\u1ec7n tr\u1edf. <\/p>\n<p dir=\"ltr\">Lu\u1eadt n\u00e0y cho th\u1ea5y r\u1eb1ng c\u01b0\u1eddng \u0111\u1ed9 \u0111i qua hai \u0111i\u1ec3m c\u1ee7a d\u00e2y d\u1eabn lu\u00f4n t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi \u0111i\u1ec7n \u00e1p \u1edf hai \u0111\u1ea7u c\u1ee7a d\u00e2y v\u1edbi m\u1ed9t d\u00e2y d\u1eabn \u0111i\u1ec7n c\u00f3 \u0111i\u1ec7n tr\u1edf kh\u00f4ng \u0111\u1ed5i v\u00e0 d\u00f2ng \u0111i\u1ec7n s\u1ebd t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn.<\/p>\n<p dir=\"ltr\">C\u00f3 m\u1ed9t c\u00f4ng th\u1ee9c: <\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/A%CC%89nh_chu%CC%A3p_Ma%CC%80n_hi%CC%80nh_2022-06-12_lu%CC%81c_10.50.03_CH.png\" alt=\"\" width=\"350\" height=\"142\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">I: C\u00e1c c\u01b0\u1eddng \u0111\u1ed9 \u0111i qua d\u00e2y d\u1eabn (A).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">U: \u0110i\u1ec7n \u00e1p \u0111i\u1ec7n \u00e1p (V).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">R: l\u00e0 \u0111i\u1ec7n tr\u1edf (\u03c9).<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tinh_toan_cuong_do_trong_mach_theo_luat_om\"><\/span>T\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 trong m\u1ea1ch theo lu\u1eadt \u00f4m<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/A%CC%89nh_chu%CC%A3p_Ma%CC%80n_hi%CC%80nh_2022-06-12_lu%CC%81c_10.51.13_CH.png\" alt=\"\" width=\"350\" height=\"82\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">I: D\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch k\u00edn (A).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">E: Kh\u1ea3 n\u0103ng \u0111\u1ed9ng (V).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">RN: \u0110i\u1ec7n tr\u1edf b\u00ean ngo\u00e0i ().<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">R: \u0110i\u1ec7n tr\u1edf trong (\u03c9).<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_dong_dien_hieu_qua\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/A%CC%89nh_chu%CC%A3p_Ma%CC%80n_hi%CC%80nh_2022-06-12_lu%CC%81c_10.51.46_CH.png\" alt=\"\" width=\"350\" height=\"96\"><\/p>\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 (a).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">IO l\u00e0 d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a (A).<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_dong_dien_dinh_muc\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/A%CC%89nh_chu%CC%A3p_Ma%CC%80n_hi%CC%80nh_2022-06-12_lu%CC%81c_10.52.37_CH.png\" alt=\"\" width=\"350\" height=\"80\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">I: C\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c (A).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P: N\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n (W).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">U: \u0110i\u1ec7n \u00e1p (V).<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_dong_toi_da\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n d\u00f2ng t\u1ed1i \u0111a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/A%CC%89nh_chu%CC%A3p_Ma%CC%80n_hi%CC%80nh_2022-06-12_lu%CC%81c_10.53.27_CH.png\" alt=\"\" width=\"350\" height=\"79\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">I: D\u00f2ng \u0111i\u1ec7n hi\u1ec7u qu\u1ea3 (a).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">I0: d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a (a).<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_cuong_do_dong_chay_bao_hoa\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng ch\u1ea3y b\u00e3o h\u00f2a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/A%CC%89nh_chu%CC%A3p_Ma%CC%80n_hi%CC%80nh_2022-06-12_lu%CC%81c_10.54.18_CH.png\" alt=\"\" width=\"350\" height=\"68\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">IBH: c\u01b0\u1eddng \u0111\u1ed9 b\u00e3o h\u00f2a (A).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">N: S\u1ed1 l\u01b0\u1ee3ng electron l\u00e0 <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">E: \u0110i\u1ec7n t\u00edch \u0111i\u1ec7n t\u1eed. .<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_cuong_do_3_-phase\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n c\u01b0\u1eddng \u0111\u1ed9 3 -phase<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/A%CC%89nh_chu%CC%A3p_Ma%CC%80n_hi%CC%80nh_2022-06-12_lu%CC%81c_10.54.58_CH.png\" alt=\"\" width=\"350\" height=\"88\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">I3P: \u1ee8ng d\u1ee5ng ba -phase (A)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P: N\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n (W).<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">U: \u0110i\u1ec7n \u00e1p (V).<\/p>\n<\/li>\n<\/ul>\n<p>Xem th\u00eam: Gi\u1ea3i th\u00edch s\u1ee9c \u0111\u1ec1 kh\u00e1ng c\u1ee7a d\u00e2y d\u1eabn, c\u00e1c b\u00e0i t\u1eadp c\u00f4ng th\u1ee9c &amp; th\u1ef1c h\u00e0nh<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Y_nghia_ung_dung_dong_dien_trong_cuoc_song\"><\/span>\u00dd ngh\u0129a &amp; \u1ee9ng d\u1ee5ng d\u00f2ng \u0111i\u1ec7n trong cu\u1ed9c s\u1ed1ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Hi\u1ec7n t\u1ea1i, c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a hi\u1ec7n t\u1ea1i r\u1ea5t d\u1ec5 th\u1ea5y trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y. Ch\u00fang l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu c\u0169ng nh\u01b0 th\u1ed1ng tr\u1ecb to\u00e0n b\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a cu\u1ed9c s\u1ed1ng.<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hi\u1ec7u \u1ee9ng nhi\u1ec7t c\u1ee7a d\u00f2ng \u0111i\u1ec7n<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cuong-do-dong-dien-6.jpg\" alt=\"H\u00ecnh \u1ea3nh \u1ee9ng d\u1ee5ng hi\u1ec7u \u1ee9ng nhi\u1ec7t trong cu\u1ed9c s\u1ed1ng. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\">Vi\u1ec7c \u00e1p d\u1ee5ng hi\u1ec7u \u1ee9ng nhi\u1ec7t \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea3ng. Khi c\u1eafm \u0111i\u1ec7n, d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua b\u1ea3ng \u0111\u1ec3 l\u00e0m cho n\u00f3 n\u00f3ng l\u00ean, v\u00ec v\u1eady khi ch\u00fang ta s\u1eed d\u1ee5ng b\u1ea3ng, n\u00f3 s\u1ebd ph\u1eb3ng. Ngo\u00e0i ra, n\u00f3 c\u0169ng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb th\u00f4ng qua b\u1ebfp \u0111i\u1ec7n, b\u1ebfp g\u1ea1o, chai si\u00eau t\u1ed1c \u0111\u1ed9, c\u1ea7u ch\u00ec, &#8230;<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hi\u1ec7u \u1ee9ng quang h\u1ecdc c\u1ee7a d\u00f2ng \u0111i\u1ec7n<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cuong-do-dong-dien-7.jpg\" alt=\"    H\u00ecnh \u1ea3nh c\u1ee7a b\u00f3ng \u0111\u00e8n qua h\u00ecnh \u1ea3nh c\u1ee7a d\u00f2ng \u0111i\u1ec7n. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\">D\u00f2ng \u0111i\u1ec7n \u0111i qua c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 b\u00f3ng \u0111\u00e8n \u0111\u1ec3 bi\u1ebfn th\u00e0nh n\u0103ng l\u01b0\u1ee3ng quang h\u1ecdc, khi\u1ebfn b\u00f3ng \u0111\u00e8n ph\u00e1t s\u00e1ng. \u0110\u00f3 l\u00e0 m\u1ed9t trong nh\u1eefng t\u00e1c \u0111\u1ed9ng r\u1ea5t quan tr\u1ecdng c\u1ee7a hi\u1ec7n t\u1ea1i. <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">D\u00f2ng \u0111i\u1ec7n c\u00f3 hi\u1ec7u \u1ee9ng t\u1eeb t\u00ednh<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cuong-do-dong-dien-8.jpg\" alt=\"H\u00ecnh \u1ea3nh nam ch\u00e2m \u0111i\u1ec7n. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\">Khi d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua m\u1ed9t cu\u1ed9n d\u00e2y quanh co quanh l\u00f5i s\u1eaft, kim nam ch\u00e2m s\u1ebd b\u1ecb l\u1ec7ch kh\u1ecfi v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng h\u00fat kim lo\u1ea1i.<\/p>\n<p dir=\"ltr\">\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf t\u1eeb hi\u1ec7u \u1ee9ng t\u1eeb t\u00ednh c\u1ee7a d\u00f2ng ch\u00ednh l\u00e0 t\u1ea1o ra chu\u00f4ng \u0111i\u1ec7n, \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n, \u0111i\u1ec7n t\u1eeb, &#8230;<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hi\u1ec7u \u1ee9ng h\u00f3a ch\u1ea5t c\u1ee7a d\u00f2ng \u0111i\u1ec7n<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">\u1ee8ng d\u1ee5ng l\u1edbn nh\u1ea5t cho c\u00e1c hi\u1ec7u \u1ee9ng h\u00f3a h\u1ecdc l\u00e0 kh\u1ea3 n\u0103ng m\u1ea1 \u0111i\u1ec7n.<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00e1c t\u00e1c \u0111\u1ed9ng sinh l\u00fd c\u1ee7a d\u00f2ng \u0111i\u1ec7n<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cuong-do-dong-dien-9.jpg\" alt=\"H\u00ecnh \u1ea3nh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u00e2m c\u1ee9u. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"494\"><\/p>\n<p dir=\"ltr\">Hi\u1ec7u \u1ee9ng n\u00e0y ch\u00fang t\u00f4i r\u1ea5t d\u1ec5 g\u1eb7p trong ng\u00e0nh y h\u1ecdc. D\u00f2ng \u0111i\u1ec7n c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 nh\u1ecf ph\u00f9 h\u1ee3p \u0111\u1ec3 ch\u1eefa b\u1ec7nh nh\u01b0 ch\u00e2m c\u1ee9u, s\u1ed1c tim, &#8230;<\/p>\n<p dir=\"ltr\">Tuy nhi\u00ean, n\u1ebfu s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 kh\u00f4ng ph\u00f9 h\u1ee3p, n\u00f3 c\u00f3 th\u1ec3 nguy hi\u1ec3m nh\u01b0 co gi\u1eadt, ngh\u1eb9t th\u1edf, th\u1ea7n kinh th\u1ea7n kinh, tim ng\u1eebng \u0111\u1eadp, &#8230;<\/p>\n<p dir=\"ltr\">Tr\u00ean \u0111\u00e2y l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 hi\u1ec7n t\u1ea1i m\u00e0 kh\u1ec9 bi\u00ean so\u1ea1n m\u1ed9t c\u00e1ch khoa h\u1ecdc \u0111\u1ec3 gi\u00fap b\u1ea1n hi\u1ec3u ki\u1ebfn \u200b\u200bth\u1ee9c m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Hy v\u1ecdng r\u1eb1ng b\u00e0i vi\u1ebft n\u00e0y gi\u00fap b\u1ea1n t\u00edch l\u0169y m\u1ed9t s\u1ed1 ki\u1ebfn \u200b\u200bth\u1ee9c h\u1eefu \u00edch c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n h\u1ecdc t\u1eadp v\u00e0 \u00e1p d\u1ee5ng cho cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y. <\/p>\n<p>\u0110\u1eebng qu\u00ean chia s\u1ebb b\u00e0i vi\u1ebft v\u00e0 th\u01b0\u1eddng truy c\u1eadp danh m\u1ee5c ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n \u0111\u1ec3 c\u1eadp nh\u1eadt nhi\u1ec1u th\u00f4ng tin h\u1eefu \u00edch v\u00e0 th\u00fa v\u1ecb t\u1eeb kh\u1ec9.<\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ki\u1ebfn th\u1ee9c v\u1ec1 d\u00f2ng \u0111i\u1ec7n kh\u00f4ng kh\u00f3 nh\u01b0 c\u00e1c ch\u01b0\u01a1ng kh\u00e1c, nh\u01b0ng n\u00f3 c\u1ef1c k\u1ef3 quan tr\u1ecdng b\u1edfi v\u00ec \u0111\u00e2y l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a v\u1eadt l\u00fd 7. Th\u00f4ng qua c\u01b0\u1eddng \u0111\u1ed9, ch\u00fang ta c\u00f3 th\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c \u0111i\u1ec3m m\u1ea1nh ho\u1eb7c \u0111i\u1ec3m y\u1ebfu c\u1ee7a d\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch. V\u00e0 \u0111\u1ec3 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1&#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-19995","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19995","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=19995"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19995\/revisions"}],"predecessor-version":[{"id":24507,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19995\/revisions\/24507"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=19995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=19995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=19995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}