{"id":3356,"date":"2021-10-20T16:53:35","date_gmt":"2021-10-20T09:53:35","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=3356"},"modified":"2021-10-22T18:08:43","modified_gmt":"2021-10-22T11:08:43","slug":"cuong-do-dong-dien-la-gi-ky-hieu-cong-thuc-tinh","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/cuong-do-dong-dien-la-gi-ky-hieu-cong-thuc-tinh\/","title":{"rendered":"C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n l\u00e0 g\u00ec? \u2013 K\u00fd hi\u1ec7u, c\u00f4ng th\u1ee9c t\u00ednh"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n l\u00e0 g\u00ec? C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u00f3 c\u00f4ng th\u1ee9c t\u00ednh nh\u01b0 th\u1ebf n\u00e0o? L\u00e0 c\u00e2u h\u1ecfi m\u00e0 ch\u00fang t\u00f4i nh\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec1u t\u1eeb qu\u00fd b\u1ea1n \u0111\u1ecdc trong th\u1eddi gian qua. \u0110\u1ec3 c\u00f3 c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t h\u00e3y theo d\u00f5i nh\u1eefng n\u1ed9i dung th\u00f4ng tin trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y c\u1ee7a ch\u00fang t\u00f4i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n l\u00e0 g\u00ec ?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Theo \u0111\u1ecbnh ngh\u0129a, c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n l\u00e0 ch\u1ec9 s\u1ed1 Ampe k\u1ebf gi\u00fap ng\u01b0\u1eddi d\u00f9ng th\u1ea5y \u0111\u01b0\u1ee3c \u0111\u1ed9 m\u1ea1nh hay y\u1ebfu c\u1ee7a d\u00f2ng \u0111i\u1ec7n. \u0110i\u1ec7n c\u00e0ng m\u1ea1nh th\u00ec c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n s\u1ebd c\u00e0ng l\u1edbn v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Hi\u1ec3u m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u00ednh l\u00e0 s\u1ed1 th\u00e0nh ph\u1ea7n \u0111i\u1ec7n \u0111i qua m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch trong m\u1ed9t th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u00fd hi\u1ec7u c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u00f3 k\u00ed hi\u1ec7u l\u00e0 I, I trong h\u1ec7 SI. \u0110\u00e2y l\u00e0 t\u00ean c\u1ee7a m\u1ed9t nh\u00e0 v\u1eadt l\u00fd h\u1ecdc v\u00e0 to\u00e1n h\u1ecdc ng\u01b0\u1eddi Ph\u00e1p Andr\u00e9 Marie Amp\u00e8re. \u0110\u01a1n v\u1ecb \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng \u0111\u01a1n v\u1ecb c\u1ee7a Ampe c\u00f3 k\u00ed hi\u1ec7u l\u00e0 A. M\u1ed7i m\u1ed9t ampe s\u1ebd t\u01b0\u01a1ng \u1ee9ng v\u1edbi d\u00f2ng chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a 6,24150948. Ngo\u00e0i ampe ng\u01b0\u1eddi ta c\u00f2n s\u1eed d\u1ee5ng miliampe \u0111\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u00f3 k\u00ed hi\u1ec7u l\u00e0 mA, 1mA=0.001A.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n b\u1eb1ng d\u1ee5ng c\u1ee5 g\u00ec? C\u00e1ch \u0111o<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 r\u1ea5t nhi\u1ec1u thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n nh\u01b0ng ph\u1ed5 bi\u1ebfn nh\u1ea5t v\u1eabn l\u00e0 3 d\u1ee5ng c\u1ee5 sau \u0111\u00e2y:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ampe k\u1ebf<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ampe k\u1ebf l\u00e0 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi ch\u1ecdn l\u1ef1a \u0111\u1ec3 \u0111o \u0111\u1ed9 m\u1ea1nh, y\u1ebfu c\u1ee7a d\u00f2ng \u0111i\u1ec7n. Ng\u01b0\u1eddi d\u00f9ng d\u1ec5 d\u00e0ng nh\u1eadn bi\u1ebft th\u00f4ng qua vi\u1ec7c quan s\u00e1t k\u1ebft c\u1ea5u c\u1ee7a ampe. M\u1ed7i m\u1ed9t chi\u1ebfc ampe \u0111\u1ec1u c\u00f3 ghi \u0111\u01a1n v\u1ecb \u0111o tr\u00ean b\u1ec1 m\u1eb7t, thi\u1ebft b\u1ecb c\u00f3 gi\u1edbi h\u1ea1n \u0111o c\u0169ng nh\u01b0 chia th\u00e0nh nhi\u1ec1u m\u1ee9c \u0111\u1ed9 kh\u00e1c nhau, c\u00f3 nh\u1eefng chi\u1ebfc chia \u0111\u1ed9 nh\u1ecf nh\u1ea5t l\u00e0 0.5mA.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean m\u1ed7i ch\u1ed1t c\u1ee7a ampe th\u01b0\u1eddng ghi d\u1ea5u (-) ho\u1eb7c (+), b\u1ea1n c\u1ea7n quan s\u00e1t th\u1eadt k\u1ef9 \u0111\u1ec3 l\u1eafp d\u00e2y cho ph\u00f9 h\u1ee3p. Ph\u00eda d\u01b0\u1edbi c\u1ee7a thi\u1ebft b\u1ecb c\u00f3 n\u00fat \u0111i\u1ec1u ch\u1ec9nh kim, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u01b0a v\u1ec1 0.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 bi\u1ebft I l\u00e0 bao nhi\u00eau tr\u01b0\u1edbc h\u1ebft b\u1ea1n c\u1ea7n ph\u1ea3i l\u1ef1a ch\u1ecdn ampe k\u1ebf c\u00f3 gi\u1edbi h\u1ea1n \u0111o v\u00e0 chia \u0111\u1ed9 nh\u1ecf nh\u1ea5t sao cho ph\u00f9 h\u1ee3p; quan s\u00e1t v\u00e0 \u0111\u01b0a kim \u0111i\u1ec1u ch\u1ec9nh v\u1ec1 v\u1ea1ch s\u1ed1 0. Ti\u1ebfp \u0111\u1ebfn v\u1ebd s\u01a1 \u0111\u1ed3 tr\u00ean gi\u1ea5y sau \u0111\u00f3 m\u1edbi m\u1eafc ampe k\u1ebf v\u1edbi v\u1eadt d\u1eabn. Khi l\u1eafp b\u1ea1n c\u1ea7n ph\u1ea3i l\u1eafp ch\u00ednh x\u00e1c \u0111\u1ec3 d\u00f2ng \u0111i\u1ec7n \u0111i v\u00e0o t\u1eeb c\u1ef1c d\u01b0\u01a1ng v\u00e0 ra \u1edf c\u1ef1c \u00e2m. Kim c\u1ee7a ampe ch\u1ec9 v\u00e0o s\u1ed1 n\u00e0o tr\u00ean m\u00e0n h\u00ecnh th\u00ec \u0111\u00f3 ch\u00ednh l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n. C\u00e1ch \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n b\u1eb1ng ampe k\u1ebf v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n n\u00ean b\u1ea5t k\u1ef3 ai c\u0169ng c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c. L\u01b0u \u00fd nh\u1ecf cho b\u1ea1n l\u00e0 kh\u00f4ng m\u1eafc tr\u1ef1c ti\u1ebfp v\u00e0o c\u00e1c ch\u1ed1t c\u1ee7a ampe k\u1ebf v\u1edbi 2 c\u1ef1c c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ec3 tr\u00e1nh l\u00e0m h\u1ecfng thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ampe k\u00ecm<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111o I c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb \u0111i\u1ec7n khi \u0111ang s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng ampe k\u00ecm \u0111\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n b\u1eb1ng c\u00e1ch k\u1eb9p v\u00e0o 1 d\u00e2y c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb, khi \u0111\u00f3 I s\u1ebd hi\u1ec3n th\u1ecb tr\u00ean m\u00e0n h\u00ecnh nh\u1edd v\u1eady b\u1ea1n d\u1ec5 d\u00e0ng quan s\u00e1t v\u00e0 bi\u1ebft \u0111\u01b0\u1ee3c \u0111\u1ed9 m\u1ea1nh, y\u1ebfu c\u1ee7a d\u00f2ng \u0111i\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o cuong do dong dien. \u0110\u1ec3 \u0111o \u0111\u01b0\u1ee3c b\u1ea1n c\u1ea7n ph\u1ea3i c\u00e0i \u0111\u1eb7t ch\u1ee9c n\u0103ng ph\u00f9 h\u1ee3p v\u1edbi n\u00f3. Thi\u1ebft b\u1ecb c\u00f2n \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111o d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u00f4ng th\u1ee9c t\u00ednh c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng th\u1ee9c t\u00ednh d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 t\u00ednh c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n b\u1ea1n \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I = Q\/t = (q1 + q2 + q3+\u2026+qn)\/t<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00ecn v\u00e0o c\u00f4ng th\u1ee9c b\u1ea1n s\u1ebd th\u1ea5y c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n trung b\u00ecnh c\u1ee7a 1 kho\u1ea3ng th\u1eddi gian s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a b\u1eb1ng th\u01b0\u01a1ng s\u1ed1 \u0111i\u1ec7n l\u01b0\u1ee3ng chuy\u1ec3n qua b\u1ec1 m\u1eb7t trong kho\u1ea3ng th\u1eddi gian \u0111\u00f3 v\u00e0 kho\u1ea3ng th\u1eddi gian \u0111ang x\u00e9t. C\u00f4ng th\u1ee9c t\u00ednh c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n trung b\u00ecnh l\u00e0:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong \u0111\u00f3:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Itb: L\u00e0 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n trung b\u00ecnh (A)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0394Q: L\u00e0 \u0111i\u1ec7n tr\u01b0\u1eddng chuy\u1ec3n qua b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c x\u00e9t trong kho\u1ea3ng th\u1eddi gian t\u00a9<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0394t: L\u00e0 kho\u1ea3ng th\u1eddi gian x\u00e9t nh\u1ecf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n t\u1ee9c th\u1eddi s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh theo c\u00f4ng th\u1ee9c:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong \u0111\u00f3:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I: L\u00e0 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P: L\u00e0 c\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">U: L\u00e0 hi\u1ec7u \u0111i\u1ec7n th\u1ebf<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ho\u1eb7c s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c kh\u00e1c:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong \u0111\u00f3:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n k\u00ed hi\u1ec7u l\u00e0 (A)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">U l\u00e0 hi\u1ec7u \u0111i\u1ec7n th\u1ebf c\u00f3 \u0111\u01a1n v\u1ecb U<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">R l\u00e0 \u0111i\u1ec7n tr\u1edf c\u00f3 \u0111\u01a1n v\u1ecb l\u00e0 \u00d4m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng th\u1ee9c t\u00ednh c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n hi\u1ec7u d\u1ee5ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a m\u1ed9t d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i, ngh\u0129a l\u00e0 khi \u0111i qua c\u00f9ng m\u1ed9t \u0111i\u1ec7n tr\u1edf R, c\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 trong R b\u1edfi 2 d\u00f2ng \u0111i\u1ec7n s\u1ebd l\u00e0 nh\u01b0 nhau. C\u00f4ng th\u1ee9c t\u00ednh l\u00e0 :<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I=U\/R<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng th\u1ee9c t\u00ednh c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n 3 pha<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 2 c\u00e1ch t\u00ednh c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n 3 pha \u0111\u00f3 l\u00e0:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ca\u0301ch 1: C\u01b0\u01a1\u0300ng \u0111\u00f4\u0323 do\u0300ng \u0111i\u00ea\u0323n 3 pha = P x 2 ( trong \u0111o\u0301 P la\u0300 c\u00f4ng su\u00e2\u0301t cu\u0309a thi\u00ea\u0301t bi\u0323 s\u01b0\u0309 du\u0323ng do\u0300ng \u0111i\u00ea\u0323n). Ca\u0301ch ti\u0301nh c\u01b0\u01a1\u0300ng \u0111\u00f4\u0323 do\u0300ng \u0111i\u00ea\u0323n 3 pha na\u0300y chi\u0309 cho ra k\u00ea\u0301t qua\u0309 t\u01b0\u01a1ng \u0111\u00f4\u0301ig\u00e2\u0300n \u0111u\u0301ng cu\u0309a c\u01b0\u01a1\u0300ng \u0111\u00f4\u0323 do\u0300ng \u0111i\u00ea\u0323n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ca\u0301ch 2: C\u01b0\u01a1\u0300ng \u0111\u00f4\u0323 do\u0300ng \u0111i\u00ea\u0323n 3 pha \u0111\u01b0\u1ee3c t\u00ednh P\/ (c\u0103n 3 x U x cosphi x hi\u1ec7u su\u1ea5t). Trong \u0111o\u0301 P la\u0300 c\u00f4ng su\u00e2\u0301t cu\u0309a thi\u00ea\u0301t bi\u0323 s\u01b0\u0309 du\u0323ng do\u0300ng \u0111i\u00ea\u0323n 3, U la\u0300 \u0111i\u00ea\u0323n a\u0301p (380). \u0110\u00e2y l\u00e0 ca\u0301ch ti\u0301nh cho ra k\u00ea\u0301t qua\u0309 ch\u00ednh x\u00e1c nh\u1ea5t c\u1ee7a c\u01b0\u01a1\u0300ng \u0111\u00f4\u0323 do\u0300ng \u0111i\u00ea\u0323n 3 pha.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ee8ng d\u1ee5ng c\u1ee7a c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Duy tr\u00ec \u0111\u1ed9 b\u1ec1n v\u00e0 an to\u00e0n cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i m\u1ed9t thi\u1ebft b\u1ecb \u0111i\u1ec7n \u0111\u1ec1u c\u00f3 h\u1ea1n m\u1ee9c c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n \u0111\u1ec3 thi\u1ebft b\u1ecb v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n cho ng\u01b0\u1eddi d\u00f9ng. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb ng\u01b0\u1eddi d\u00f9ng c\u1ea7n bi\u1ebft \u0111\u01b0\u1ee3c \u0111\u1ed9 m\u1ea1nh y\u1ebfu c\u1ee7a d\u00f2ng \u0111i\u1ec7n \u0111\u1ec3 duy tr\u00ec d\u00f2ng \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n cho ph\u00e9p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3 nhi\u1ec1u c\u00e1ch \u0111\u1ec3 ki\u1ec3m so\u00e1t c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n, th\u01b0\u1eddng ng\u01b0\u1eddi ta s\u1ebd l\u1eafp aptomat ho\u1eb7c \u1ed5n \u00e1p. Thi\u1ebft b\u1ecb c\u00f3 t\u00e1c d\u1ee5ng \u0111o c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n v\u00e0 t\u1ef1 \u0111\u1ed9ng ng\u1eaft kh\u00ed m\u00e1y m\u00f3c, trang thi\u1ebft b\u1ecb trong nh\u00e0 b\u1ea1n ho\u1ea1t \u0111\u1ed9ng qu\u00e1 c\u00f4ng su\u1ea5t hay khi c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng ch\u00e1y n\u1ed5 x\u1ea3y ra. B\u00ean c\u1ea1nh \u0111\u00f3, khi l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng \u0111i\u1ec7n n\u0103ng ng\u01b0\u1eddi d\u00f9ng c\u0169ng c\u1ea7n ch\u1ecdn lo\u1ea1i d\u00e2y d\u1eabn ph\u00f9 h\u1ee3p \u0111\u1ec3 ti\u1ebft ki\u1ec7m \u0111i\u1ec7n n\u0103ng v\u00e0 \u0111\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh. V\u00ed d\u1ee5 nh\u01b0 \u0111i\u1ec1u h\u00f2a nh\u00e0 b\u1ea1n s\u1eed d\u1ee5ng c\u00f3 c\u00f4ng su\u1ea5t 24.00Btu th\u00ec b\u1ea1n n\u00ean l\u1ef1a ch\u1ecdn d\u00e2y d\u1eabn c\u00f3 k\u00edch th\u01b0\u1edbc 4mm v\u00e0 \u1ed5n \u00e1p 5kVA.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea3m b\u1ea3o s\u1ee9c kh\u1ecfe v\u00e0 an to\u00e0n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n v\u01b0\u1ee3t qu\u00e1 m\u1ee9c cho ph\u00e9p g\u00e2y ra c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng nh\u01b0 ch\u00e1y n\u1ed5, ph\u00f3ng \u0111i\u1ec7n,\u2026n\u1ebfu d\u00f2ng \u0111i\u1ec7n n\u00e0y ch\u1ea1y tr\u1ef1c ti\u1ebfp v\u00e0o c\u01a1 th\u1ec3 s\u1ebd g\u00e2y ra m\u1ed9t s\u1ed1 t\u00e1c h\u1ea1i v\u00f4 c\u00f9ng l\u1edbn nh\u01b0 t\u1ed5n th\u01b0\u01a1ng c\u01a1 b\u1eafp, c\u01a1 quan h\u00f4 h\u1ea5p,\u2026th\u1eadm ch\u00ed l\u00e0 t\u1eed vong. L\u00fac n\u00e0y c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 c\u1ea3nh b\u00e1o m\u1ee9c \u0111\u1ed9 nguy hi\u1ec3m \u0111\u1ec3 ng\u01b0\u1eddi d\u00f9ng tr\u00e1nh v\u00e0 c\u00f3 bi\u1ec7n ph\u00e1p x\u1eed l\u00fd k\u1ecbp th\u1eddi. Tr\u1ecb s\u1ed1 c\u1ee7a d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u 50-60Hz, an to\u00e0n l\u00e0 10mA.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi nh\u1eefng th\u00f4ng tin tr\u00ean \u0111\u00e2y ch\u1eafc ch\u1eafn \u0111\u00e3 gi\u00fap b\u1ea1n tr\u1ea3 l\u1eddi \u0111\u01b0\u1ee3c c\u00e2u h\u1ecfi c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n l\u00e0 g\u00ec? c\u00f4ng th\u1ee9c t\u00ednh c\u01b0\u1eddng \u0111\u1ed9 \u0111i\u1ec7n,\u2026.N\u1ebfu c\u00f3 b\u1ea5t k\u1ef3 th\u1eafc m\u1eafc n\u00e0o c\u1ea7n gi\u1ea3i \u0111\u00e1p li\u00ean quan \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 n\u00e0y, qu\u00fd kh\u00e1ch h\u00e0ng h\u00e3y comment ph\u00eda cu\u1ed1i b\u00e0i vi\u1ebft ch\u00fang t\u00f4i s\u1ebd gi\u1ea3i \u0111\u00e1p gi\u00fap b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n l\u00e0 g\u00ec? C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u00f3 c\u00f4ng th\u1ee9c t\u00ednh nh\u01b0 th\u1ebf n\u00e0o? L\u00e0 c\u00e2u h\u1ecfi m\u00e0 ch\u00fang t\u00f4i nh\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec1u t\u1eeb qu\u00fd b\u1ea1n \u0111\u1ecdc trong th\u1eddi gian qua. \u0110\u1ec3 c\u00f3 c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t h\u00e3y theo d\u00f5i nh\u1eefng [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[7],"tags":[],"class_list":["post-3356","post","type-post","status-publish","format-standard","hentry","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/3356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=3356"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/3356\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=3356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=3356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=3356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}