{"id":5728,"date":"2021-11-20T09:48:59","date_gmt":"2021-11-20T02:48:59","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=5728"},"modified":"2021-11-20T12:42:03","modified_gmt":"2021-11-20T05:42:03","slug":"vi-sao-may-bien-ap-co-the-bien-doi-dien-ap","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/vi-sao-may-bien-ap-co-the-bien-doi-dien-ap\/","title":{"rendered":"V\u00ec sao m\u00e1y bi\u1ebfn \u00e1p c\u00f3 th\u1ec3 bi\u1ebfn \u0111\u1ed5i \u0111i\u1ec7n \u00e1p?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Khi b\u1ea1n \u0111i qua tr\u1ea1m bi\u1ebfn \u00e1p, nghe th\u1ea5y b\u00ean trong c\u00f3 ti\u1ebfng u, u. \u0110\u00f3 l\u00e0 m\u00e1y bi\u1ebfn \u00e1p \u0111ang l\u00e0m vi\u1ec7c \u0111\u1ea5y! Nghe t\u00ean g\u1ecdi bi\u1ebft n\u1ed9i dung, m\u00e1y bi\u1ebfn \u00e1p t\u1ee9c l\u00e0 c\u00f4ng c\u1ee5 c\u00f3 th\u1ec3 bi\u1ebfn \u0111\u1ed5i m\u1ee9c \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n \u00e1p, t\u1eeb cao xu\u1ed1ng th\u1ea5p ho\u1eb7c t\u1eeb th\u1ea5p l\u00ean cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec sao m\u00e1y bi\u1ebfn \u00e1p c\u00f3 th\u1ec3 bi\u1ebfn \u0111\u1ed5i m\u1ee9c \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n \u00e1p nh\u1ec9? Ch\u00fang ta h\u00e3y t\u00ecm hi\u1ec3u k\u1ebft c\u1ea5u c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p tr\u01b0\u1edbc \u0111\u00e3. Tuy m\u00e1y bi\u1ebfn \u00e1p c\u00f3 r\u1ea5t nhi\u1ec1u lo\u1ea1i h\u00ecnh, k\u00edch th\u01b0\u1edbc c\u0169ng kh\u00e1c bi\u1ec7t r\u1ea5t l\u1edbn. Song k\u1ebft c\u1ea5u c\u01a1 b\u1ea3n c\u1ee7a ch\u00fang na n\u00e1 nh\u01b0 nhau, \u0111\u1ec1u l\u00e0 cu\u1ed1n hai cu\u1ed9n d\u00e2y tr\u00ean c\u00f9ng m\u1ed9t l\u00f5i s\u1eaft. Hai cu\u1ed9n d\u00e2y n\u00e0y g\u1ecdi ri\u00eang r\u1ebd l\u00e0 cu\u1ed9n s\u01a1 c\u1ea5p v\u00e0 cu\u1ed9n th\u1ee9 c\u1ea5p. D\u00f2ng \u0111i\u1ec7n b\u00ean ngo\u00e0i \u0111i v\u00e0o cu\u1ed9n s\u01a1 c\u1ea5p v\u00e0 \u0111i ra t\u1eeb cu\u1ed9n th\u1ee9 c\u1ea5p. N\u1ebfu s\u1ed1 v\u00f2ng d\u00e2y c\u1ee7a cu\u1ed9n s\u01a1 c\u1ea5p nhi\u1ec1u h\u01a1n c\u1ee7a cu\u1ed9n th\u1ee9 c\u1ea5p, \u0111i\u1ec7n \u00e1p tr\u00ean cu\u1ed9n th\u1ee9 c\u1ea5p s\u1ebd h\u1ea1 th\u1ea5p. \u0110\u00f3 t\u1ee9c l\u00e0 m\u00e1y bi\u1ebfn \u00e1p gi\u1ea3m \u00e1p. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu s\u1ed1 v\u00f2ng d\u00e2y c\u1ee7a cu\u1ed9n s\u01a1 c\u1ea5p \u00edt h\u01a1n c\u1ee7a cu\u1ed9n th\u1ee9 c\u1ea5p, \u0111i\u1ec7n \u00e1p tr\u00ean cu\u1ed9n th\u1ee9 c\u1ea5p s\u1ebd t\u0103ng cao. \u0110\u00f3 t\u1ee9c l\u00e0 m\u00e1y bi\u1ebfn \u00e1p t\u0103ng \u00e1p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1ef1c ra nguy\u00ean l\u00ed l\u00e0m vi\u1ec7c c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p kh\u00f4ng h\u1ec1 ph\u1ee9c t\u1ea1p. C\u0103n c\u1ee9 v\u00e0o nguy\u00ean l\u00ed c\u1ea3m \u1ee9ng, khi m\u1ed9t v\u1eadt d\u1eabn \u0111i\u1ec7n n\u1eb1m trong t\u1eeb tr\u01b0\u1eddng bi\u1ebfn \u0111\u1ed5i, trong v\u1eadt d\u1eabn \u0111i\u1ec7n li\u1ec1n c\u00f3 th\u1ec3 c\u1ea3m \u1ee9ng ra d\u00f2ng \u0111i\u1ec7n. N\u1ed1i m\u00e1y bi\u1ebfn \u00e1p v\u00e0o m\u1ea1ng \u0111i\u1ec7n xoay chi\u1ec1u, d\u00f2ng \u0111i\u1ec7n truy\u1ec1n v\u00e0o cu\u1ed9n s\u01a1 c\u1ea5p c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p. Khi \u1ea5y, xung quanh d\u00f2ng \u0111i\u1ec7n s\u1ebd sinh ra t\u1eeb tr\u01b0\u1eddng. Do h\u01b0\u1edbng d\u00f2ng \u0111i\u1ec7n c\u1ee7a \u0111i\u1ec7n xoay chi\u1ec1u truy\u1ec1n v\u00e0o li\u00ean t\u1ee5c bi\u1ebfn \u0111\u1ed5i, l\u00e0m sinh ra m\u1ed9t t\u1eeb tr\u01b0\u1eddng bi\u1ebfn \u0111\u1ed5i \u0111\u1ed3ng b\u1ed9 v\u1edbi d\u00f2ng \u0111i\u1ec7n. T\u1eeb tr\u01b0\u1eddng n\u00e0y c\u1ea5u th\u00e0nh m\u1ed9t \u0111\u01b0\u1eddng kh\u00e9p k\u00edn men theo l\u00f5i s\u1eaft c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p. Do c\u01b0\u1eddng \u0111\u1ed9 v\u00e0 h\u01b0\u1edbng t\u1eeb tr\u01b0\u1eddng kh\u00f4ng ng\u1eebng bi\u1ebfn \u0111\u1ed5i, t\u1eeb \u0111\u00f3 c\u1ea3m \u1ee9ng ra d\u00f2ng \u0111i\u1ec7n trong cu\u1ed9n th\u1ee9 c\u1ea5p. V\u00ec \u0111i\u1ec7n \u00e1p tr\u00ean m\u1ed7i v\u00f2ng c\u1ee7a cu\u1ed9n d\u00e2y \u0111\u1ec1u b\u1eb1ng nhau, cho n\u00ean s\u1ed1 v\u00f2ng d\u00e2y c\u1ee7a cu\u1ed9n th\u1ee9 c\u1ea5p c\u00e0ng nhi\u1ec1u, \u0111i\u1ec7n \u00e1p t\u1eeb cu\u1ed9n th\u1ee9 c\u1ea5p truy\u1ec1n ra c\u00e0ng cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu cho \u0111i\u1ec7n m\u1ed9t chi\u1ec1u truy\u1ec1n v\u00e0o m\u00e1y bi\u1ebfn \u00e1p th\u00ec sao nh\u1ec9? Do d\u00f2ng \u0111i\u1ec7n c\u1ee7a \u0111i\u1ec7n m\u1ed9t chi\u1ec1u lu\u00f4n lu\u00f4n theo c\u00f3 m\u1ed9t h\u01b0\u1edbng, h\u01b0\u1edbng c\u1ee7a t\u1eeb tr\u01b0\u1eddng sinh ra c\u0169ng s\u1ebd kh\u00f4ng bi\u1ebfn \u0111\u1ed5i. Th\u1ebf l\u00e0, tr\u00ean cu\u1ed9n th\u1ee9 c\u1ea5p c\u0169ng kh\u00f4ng th\u1ec3 c\u1ea3m \u1ee9ng ra \u0111i\u1ec7n \u00e1p. Cho n\u00ean m\u00e1y bi\u1ebfn \u00e1p ch\u1ec9 c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111i\u1ec7n \u00e1p c\u1ee7a \u0111i\u1ec7n xoay chi\u1ec1u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng n\u01a1i d\u00f9ng \u0111i\u1ec7n \u0111\u1ec1u h\u1ea7u nh\u01b0 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u01b0\u1ee3c m\u00e1y bi\u1ebfn \u00e1p. Trong nh\u00e0 m\u00e1y \u0111i\u1ec7n, \u0111i\u1ec7n sinh ra t\u1eeb m\u00e1y ph\u00e1t \u0111i\u1ec7n, tr\u01b0\u1edbc h\u1ebft ph\u1ea3i th\u00f4ng qua m\u00e1y bi\u1ebfn \u00e1p l\u1edbn, n\u00e2ng \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u l\u00ean th\u00e0nh \u0111i\u1ec7n cao \u00e1p cao t\u1edbi v\u00e0i ch\u1ee5c ngh\u00ecn ho\u1eb7c v\u00e0i tr\u0103m ngh\u00ecn v\u00f4n, sau \u0111\u00f3 th\u00f4ng qua \u0111\u01b0\u1eddng d\u00e2y t\u1ea3i \u0111i\u1ec7n \u0111\u01b0a \u0111\u1ebfn nh\u1eefng n\u01a1i d\u00f9ng \u0111i\u1ec7n nh\u01b0 nh\u00e0 m\u00e1y, tr\u01b0\u1eddng h\u1ecdc, h\u1ed9 d\u00e2n c\u01b0 v.v., th\u00f4ng qua bi\u1ec7n ph\u00e1p t\u1ea3i \u0111i\u1ec7n cao \u00e1p \u0111\u01b0\u1eddng d\u00e0i c\u00f3 th\u1ec3 gi\u1ea3m nh\u1ecf \u0111i\u1ec7n n\u0103ng ti\u00eau hao tr\u00ean d\u00e2y t\u1ea3i \u0111i\u1ec7n r\u1ea5t nhi\u1ec1u. \u0110i\u1ec7n \u0111\u1ebfn n\u01a1i s\u1eed d\u1ee5ng, l\u1ea1i ph\u1ea3i th\u00f4ng qua m\u00e1y bi\u1ebfn \u00e1p h\u1ea1 th\u1ea5p \u0111i\u1ec7n \u00e1p xu\u1ed1ng v\u00e0i tr\u0103m v\u00f4n, cung c\u1ea5p cho nh\u00e0 m\u00e1y ch\u1ea1y c\u00e1c c\u1ed7 m\u00e1y ho\u1eb7c cho gia \u0111\u00ecnh s\u1eed d\u1ee5ng \u0111\u1ed3 d\u00f9ng \u0111i\u1ec7n. C\u1ed1 nhi\u00ean c\u00f2n c\u00f3 nh\u1eefng m\u00e1y bi\u1ebfn \u00e1p nh\u1ecf h\u01a1n n\u1eefa, c\u00f3 th\u1ec3 h\u1ea1 \u0111i\u1ec7n \u00e1p trong m\u1ea1ng \u0111i\u1ec7n chi\u1ebfu s\u00e1ng xu\u1ed1ng ch\u1ec9 c\u00f2n v\u00e0i ch\u1ee5c v\u00f4n, cung c\u1ea5p cho c\u00e1c \u0111\u1ed3 d\u00f9ng gia d\u1ee5ng nh\u01b0 tivi, ra\u0111i\u00f4 v.v.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi s\u1eed d\u1ee5ng m\u00e1y bi\u1ebfn \u00e1p c\u1ee1 nh\u1ecf th\u01b0\u1eddng ng\u00e0y, l\u1ea5y tay s\u1edd v\u00e0o, bao gi\u1edd m\u00e1y bi\u1ebfn \u00e1p c\u0169ng n\u00f3ng. \u0110\u00f3 l\u00e0 v\u00ec khi d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua m\u00e1y bi\u1ebfn \u00e1p c\u00f3 sinh ra nhi\u1ec7t l\u01b0\u1ee3ng. M\u00e1y bi\u1ebfn \u00e1p s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng cao \u00e1p, do nhi\u1ec7t l\u01b0\u1ee3ng c\u1ee7a d\u00f2ng \u0111i\u1ec7n sinh ra l\u00e0m cho m\u00e1y bi\u1ebfn \u00e1p tr\u1edf n\u00ean r\u1ea5t n\u00f3ng. \u0110\u1ec3 duy tr\u00ec cho m\u00e1y bi\u1ebfn \u00e1p l\u00e0m vi\u1ec7c b\u00ecnh th\u01b0\u1eddng, th\u00f4ng th\u01b0\u1eddng ng\u01b0\u1eddi ta \u0111\u1eb7t m\u00e1y bi\u1ebfn \u00e1p v\u00e0o trong th\u00f9ng d\u1ea7u. L\u00e0m nh\u01b0 v\u1eady v\u1eeba c\u00f3 th\u1ec3 \u0111\u1ec3 cho n\u00f3 ngu\u1ed9i \u0111i nhanh, l\u1ea1i v\u1eeba c\u00f3 th\u1ec3 gi\u1eef g\u00ecn t\u00ednh n\u0103ng c\u00e1ch \u0111i\u1ec7n t\u1ed1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb kho\u00e1: M\u00e1y bi\u1ebfn \u00e1p; \u0110i\u1ec7n \u00e1p; Cu\u1ed9n th\u1ee9 c\u1ea5p; C\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb; \u0110i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Khi b\u1ea1n \u0111i qua tr\u1ea1m bi\u1ebfn \u00e1p, nghe th\u1ea5y b\u00ean trong c\u00f3 ti\u1ebfng u, u. \u0110\u00f3 l\u00e0 m\u00e1y bi\u1ebfn \u00e1p \u0111ang l\u00e0m vi\u1ec7c \u0111\u1ea5y! Nghe t\u00ean g\u1ecdi bi\u1ebft n\u1ed9i dung, m\u00e1y bi\u1ebfn \u00e1p t\u1ee9c l\u00e0 c\u00f4ng c\u1ee5 c\u00f3 th\u1ec3 bi\u1ebfn \u0111\u1ed5i m\u1ee9c \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n \u00e1p, t\u1eeb cao xu\u1ed1ng th\u1ea5p ho\u1eb7c t\u1eeb th\u1ea5p l\u00ean cao. [&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":[15,7],"tags":[],"class_list":["post-5728","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5728","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=5728"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5728\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}