{"id":44268,"date":"2023-04-25T15:06:21","date_gmt":"2023-04-25T20:06:21","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-a-transducer\/"},"modified":"2025-01-21T07:28:26","modified_gmt":"2025-01-21T12:28:26","slug":"what-is-a-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-is-a-transducer\/","title":{"rendered":"Kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi c\u1ea3m bi\u1ebfn: Transducer l\u00e0 g\u00ec?"},"content":{"rendered":"<p>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i, hay c\u00f2n g\u1ecdi l\u00e0 transducer, l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng sang d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng kh\u00e1c.  Ch\u00fang ta g\u1eb7p g\u1ee1 v\u00e0 s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i h\u00e0ng ng\u00e0y m\u00e0 c\u00f3 th\u1ec3 kh\u00f4ng nh\u1eadn ra. T\u1eeb nh\u1eefng th\u1ee9 \u0111\u01a1n gi\u1ea3n nh\u01b0 b\u00f3ng \u0111\u00e8n cho \u0111\u1ebfn nh\u1eefng c\u00f4ng ngh\u1ec7 ph\u1ee9c t\u1ea1p h\u01a1n nh\u01b0 micro, t\u1ea5t c\u1ea3 \u0111\u1ec1u d\u1ef1a tr\u00ean nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i. V\u1eady ch\u00ednh x\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i l\u00e0 g\u00ec v\u00e0 ch\u00fang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n<h3>C\u00e1c lo\u1ea1i n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i<\/h3>\n<p>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa nhi\u1ec1u d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng kh\u00e1c nhau, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>N\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc:<\/strong> Chuy\u1ec3n \u0111\u1ed9ng, rung \u0111\u1ed9ng, \u00e1p su\u1ea5t.<\/li>\n<li><strong>N\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n:<\/strong> \u0110i\u1ec7n \u00e1p, d\u00f2ng \u0111i\u1ec7n.<\/li>\n<li><strong>N\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t:<\/strong> Nhi\u1ec7t \u0111\u1ed9.<\/li>\n<li><strong>N\u0103ng l\u01b0\u1ee3ng \u00e1nh s\u00e1ng:<\/strong> \u00c1nh s\u00e1ng nh\u00ecn th\u1ea5y, tia h\u1ed3ng ngo\u1ea1i, tia c\u1ef1c t\u00edm.<\/li>\n<li><strong>N\u0103ng l\u01b0\u1ee3ng \u00e2m thanh:<\/strong> S\u00f3ng \u00e2m.<\/li>\n<li><strong>N\u0103ng l\u01b0\u1ee3ng h\u00f3a h\u1ecdc:<\/strong> Ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc.<\/li>\n<\/ul>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/h3>\n<p>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i d\u1ef1a tr\u00ean s\u1ef1 thay \u0111\u1ed5i t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a v\u1eadt li\u1ec7u b\u00ean trong n\u00f3 khi ti\u1ebfp x\u00fac v\u1edbi m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng c\u1ee5 th\u1ec3. S\u1ef1 thay \u0111\u1ed5i n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng kh\u00e1c.  V\u00ed d\u1ee5, trong m\u1ed9t micro, s\u00f3ng \u00e2m l\u00e0m rung \u0111\u1ed9ng m\u00e0ng diaphragm, t\u1ea1o ra s\u1ef1 thay \u0111\u1ed5i \u0111i\u1ec7n \u00e1p. Ng\u01b0\u1ee3c l\u1ea1i, trong loa, t\u00edn hi\u1ec7u \u0111i\u1ec7n l\u00e0m rung \u0111\u1ed9ng m\u00e0ng loa, t\u1ea1o ra s\u00f3ng \u00e2m.<\/p>\n<h3>Ph\u00e2n lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i<\/h3>\n<p>C\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1ch \u0111\u1ec3 ph\u00e2n lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i. M\u1ed9t c\u00e1ch ph\u1ed5 bi\u1ebfn l\u00e0 d\u1ef1a tr\u00ean d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra. V\u00ed d\u1ee5:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>D\u1ea1ng n\u0103ng l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o<\/th>\n<th>D\u1ea1ng n\u0103ng l\u01b0\u1ee3ng \u0111\u1ea7u ra<\/th>\n<th>V\u00ed d\u1ee5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u00c2m thanh<\/td>\n<td>\u0110i\u1ec7n<\/td>\n<td>Micro<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec7n<\/td>\n<td>\u00c2m thanh<\/td>\n<td>Loa<\/td>\n<\/tr>\n<tr>\n<td>\u00c1nh s\u00e1ng<\/td>\n<td>\u0110i\u1ec7n<\/td>\n<td>Pin m\u1eb7t tr\u1eddi<\/td>\n<\/tr>\n<tr>\n<td>Nhi\u1ec7t<\/td>\n<td>\u0110i\u1ec7n<\/td>\n<td>C\u1eb7p nhi\u1ec7t \u0111i\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td>C\u01a1 h\u1ecdc<\/td>\n<td>\u0110i\u1ec7n<\/td>\n<td>M\u00e1y ph\u00e1t \u0111i\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec7n<\/td>\n<td>C\u01a1 h\u1ecdc<\/td>\n<td>\u0110\u1ed9ng c\u01a1 \u0111i\u1ec7n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i<\/h3>\n<p>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i c\u00f3 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Y t\u1ebf:<\/strong> M\u00e1y si\u00eau \u00e2m, m\u00e1y \u0111o huy\u1ebft \u00e1p.<\/li>\n<li><strong>C\u00f4ng nghi\u1ec7p:<\/strong> C\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t, c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9.<\/li>\n<li><strong>\u0110i\u1ec7n t\u1eed:<\/strong> Micro, loa, m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng.<\/li>\n<li><strong>\u00d4 t\u00f4:<\/strong> C\u1ea3m bi\u1ebfn oxy, c\u1ea3m bi\u1ebfn t\u1ed1c \u0111\u1ed9.<\/li>\n<li><strong>Vi\u1ec5n th\u00f4ng:<\/strong> Anten, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i quang \u0111i\u1ec7n.<\/li>\n<\/ul>\n<h3>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i si\u00eau \u00e2m<\/h3>\n<p>M\u1ed9t lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng l\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i si\u00eau \u00e2m, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra v\u00e0 ph\u00e1t hi\u1ec7n s\u00f3ng si\u00eau \u00e2m.  S\u00f3ng si\u00eau \u00e2m c\u00f3 t\u1ea7n s\u1ed1 cao h\u01a1n ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi v\u00e0 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c nh\u01b0 y t\u1ebf (ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh), c\u00f4ng nghi\u1ec7p (ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y).<\/p>\n<p>T\u00f3m l\u1ea1i, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong r\u1ea5t nhi\u1ec1u thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 th\u1ed1ng m\u00e0 ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y.  S\u1ef1 \u0111a d\u1ea1ng v\u1ec1 lo\u1ea1i h\u00ecnh v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang ph\u1ea3n \u00e1nh t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng trong cu\u1ed9c s\u1ed1ng hi\u1ec7n \u0111\u1ea1i.  T\u1eeb nh\u1eefng thi\u1ebft b\u1ecb \u0111\u01a1n gi\u1ea3n \u0111\u1ebfn nh\u1eefng c\u00f4ng ngh\u1ec7 ph\u1ee9c t\u1ea1p, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c bi\u1ebfn \u0111\u1ed5i v\u00e0 s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i, hay c\u00f2n g\u1ecdi l\u00e0 transducer, l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng sang d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng kh\u00e1c. Ch\u00fang ta g\u1eb7p g\u1ee1 v\u00e0 s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i h\u00e0ng ng\u00e0y m\u00e0 c\u00f3 th\u1ec3 kh\u00f4ng nh\u1eadn ra. T\u1eeb nh\u1eefng th\u1ee9 \u0111\u01a1n gi\u1ea3n nh\u01b0 b\u00f3ng \u0111\u00e8n cho<\/p>\n","protected":false},"author":1,"featured_media":24653,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-44268","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44268","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=44268"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44268\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/24653"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=44268"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=44268"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=44268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}