{"id":72785,"date":"2022-04-27T20:46:08","date_gmt":"2022-04-28T01:46:08","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/ultrasonic-transducer-technical\/"},"modified":"2026-03-12T09:29:59","modified_gmt":"2026-03-12T14:29:59","slug":"ultrasonic-transducer-technical","status":"publish","type":"page","link":"https:\/\/www.bjultrasonic.com\/vi\/ultrasonic-transducer-technical\/","title":{"rendered":"T\u1ed5ng quan K\u1ef9 thu\u1eadt v\u1ec1 B\u1ed9 chuy\u1ec3n \u0111\u1ed5i Si\u00eau \u00e2m"},"content":{"rendered":"<p>M\u1ed9t \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng t\u1eeb d\u1ea1ng n\u00e0y sang d\u1ea1ng kh\u00e1c, c\u1ee5 th\u1ec3 l\u00e0 gi\u1eefa n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh \u1edf t\u1ea7n s\u1ed1 si\u00eau \u00e2m \u2014 nh\u1eefng t\u1ea7n s\u1ed1 n\u1eb1m tr\u00ean ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi (th\u01b0\u1eddng tr\u00ean 20 kHz). N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n h\u01a1n, \u0111\u00f3 l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 t\u1ea1o ra v\u00e0 thu nh\u1eadn s\u00f3ng \u00e2m \u1edf nh\u1eefng t\u1ea7n s\u1ed1 m\u00e0 con ng\u01b0\u1eddi kh\u00f4ng th\u1ec3 nghe th\u1ea5y.<\/p>\n<h3>1. Ph\u00e2n lo\u1ea1i<\/h3>\n<p>\u0110\u1ea7u d\u00f2 si\u00eau \u00e2m \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, v\u1eadt li\u1ec7u, t\u1ea7n s\u1ed1, c\u00f4ng su\u1ea5t v\u00e0 h\u00ecnh d\u1ea1ng. M\u1ed9t c\u00e1ch ph\u00e2n lo\u1ea1i r\u1ed9ng d\u1ef1a tr\u00ean \u1ee9ng d\u1ee5ng bao g\u1ed3m:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/vi\/category\/ultrasonic-transducer-vi\/\">\u0110\u1ea7u d\u00f2 Si\u00eau \u00e2m L\u00e0m s\u1ea1ch<\/a>: \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 lo\u1ea1i b\u1ecf ch\u1ea5t b\u1ea9n tr\u00ean b\u1ec1 m\u1eb7t b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng hi\u1ec7n t\u01b0\u1ee3ng x\u00e2m th\u1ef1c si\u00eau \u00e2m.<\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/vi\/shop\/ultrasonic-welding-transducer\/\">\u0110\u1ea7u d\u00f2 Si\u00eau \u00e2m H\u00e0n<\/a>: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gh\u00e9p n\u1ed1i v\u1eadt li\u1ec7u b\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng rung \u0111\u1ed9ng t\u1ea7n s\u1ed1 cao, t\u1ea1o ra nhi\u1ec7t v\u00e0 g\u00e2y ra s\u1ef1 h\u1ee3p nh\u1ea5t.<\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/vi\/shop\/ultrasonic-beauty-transducer\/\">\u0110\u1ea7u d\u00f2 Si\u00eau \u00e2m Th\u1ea9m m\u1ef9<\/a>: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c th\u1ee7 thu\u1eadt th\u1ea9m m\u1ef9, nh\u01b0 l\u00e0m s\u1ea1ch da v\u00e0 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng th\u1ea9m th\u1ea5u s\u1ea3n ph\u1ea9m.<\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/vi\/shop\/ultrasonic-atomizing-transducer\/\">\u0110\u1ea7u d\u00f2 Si\u00eau \u00e2m Phun s\u01b0\u01a1ng<\/a>: T\u1ea1o ra s\u01b0\u01a1ng m\u00f9 m\u1ecbn cho c\u00e1c thi\u1ebft b\u1ecb t\u1ea1o \u1ea9m ho\u1eb7c h\u00edt th\u1edf.<\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/vi\/shop\/ultrasonic-vibrating-screen-transducer\/\">\u0110\u1ea7u d\u00f2 Si\u00eau \u00e2m Rung<\/a>: S\u1eed d\u1ee5ng rung \u0111\u1ed9ng si\u00eau \u00e2m cho nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau, bao g\u1ed3m x\u1eed l\u00fd v\u1eadt li\u1ec7u v\u00e0 s\u00e0ng l\u1ecdc.<\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/vi\/shop\/ultrasonic-cell-disruptor-transducer\/\">\u0110\u1ea7u d\u00f2 Si\u00eau \u00e2m Ph\u00e1 v\u1ee1 T\u1ebf b\u00e0o<\/a>: \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m v\u1ee1 t\u1ebf b\u00e0o trong nghi\u00ean c\u1ee9u sinh h\u1ecdc v\u00e0 h\u00f3a h\u1ecdc, cho ph\u00e9p gi\u1ea3i ph\u00f3ng c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean trong t\u1ebf b\u00e0o.<\/li>\n<\/ul>\n<style type=\"text\/css\">\r\n\t\t\t\t#gallery-1 {\r\n\t\t\t\t\tmargin: auto;\r\n\t\t\t\t}\r\n\t\t\t\t#gallery-1 .gallery-item {\r\n\t\t\t\t\tfloat: left;\r\n\t\t\t\t\tmargin-top: 10px;\r\n\t\t\t\t\ttext-align: center;\r\n\t\t\t\t\twidth: 16%;\r\n\t\t\t\t}\r\n\t\t\t\t#gallery-1 .gallery-caption {\r\n\t\t\t\t\tmargin-left: 0;\r\n\t\t\t\t}\r\n\t\t\t<\/style><!-- see gallery_shortcode() in wp-includes\/media.php -->\r\n\t\t\t\n\t\t<div id=\"gallery-1\" class=\"gallery galleryid-72785 mfp-gallery mfp-gallery--images gallery-columns-6 gallery-size-full\"><div class=\"row zn_image_gallery \"><div class=\"col-sm-6 col-md-4 col-lg-2\"><a href=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2021\/03\/100KHz-40W-Ultrasonic-Transducer-PZT-4-2.jpg\" title=\"Ultrasonic Cleaning Transducer\" class=\"hoverBorder\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"750\" src=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2021\/03\/100KHz-40W-Ultrasonic-Transducer-PZT-4-2.jpg\" class=\"attachment-full size-full\" alt=\"100KHz 40W Ultrasonic Transducer (PZT-4)\" link=\"file\" size=\"full\" columns=\"6\" ids=\"23744,19551,42268,42279,4845,42294\" orderby=\"post__in\" include=\"23744,19551,42268,42279,4845,42294\" srcset=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2021\/03\/100KHz-40W-Ultrasonic-Transducer-PZT-4-2.jpg 750w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2021\/03\/100KHz-40W-Ultrasonic-Transducer-PZT-4-2-600x600.jpg 600w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2021\/03\/100KHz-40W-Ultrasonic-Transducer-PZT-4-2-100x100.jpg 100w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><span class=\"gallery_caption\">Ultrasonic Cleaning Transducer<\/span><\/a><\/div><div class=\"col-sm-6 col-md-4 col-lg-2\"><a href=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2018\/08\/5500ML-Ultrasonic-Fogger-Ultrasonic-Cool-Mist-Humidifier-1.jpg\" title=\"Ultrasonic Humidifier Transducer\" class=\"hoverBorder\"><img loading=\"lazy\" decoding=\"async\" width=\"650\" height=\"667\" src=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2018\/08\/5500ML-Ultrasonic-Fogger-Ultrasonic-Cool-Mist-Humidifier-1.jpg\" class=\"attachment-full size-full\" alt=\"5500ML Ultrasonic Fogger Ultrasonic Cool Mist Humidifier (1)\" link=\"file\" size=\"full\" columns=\"6\" ids=\"23744,19551,42268,42279,4845,42294\" orderby=\"post__in\" include=\"23744,19551,42268,42279,4845,42294\" \/><span class=\"gallery_caption\">Ultrasonic Humidifier Transducer<\/span><\/a><\/div><div class=\"col-sm-6 col-md-4 col-lg-2\"><a href=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/Ultrasonic-Welding-Transducer-4.jpg\" title=\"Ultrasonic Welding Transducer\" class=\"hoverBorder\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/Ultrasonic-Welding-Transducer-4.jpg\" class=\"attachment-full size-full\" alt=\"Ultrasonic Welding Transducer (4)\" link=\"file\" size=\"full\" columns=\"6\" ids=\"23744,19551,42268,42279,4845,42294\" orderby=\"post__in\" include=\"23744,19551,42268,42279,4845,42294\" srcset=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/Ultrasonic-Welding-Transducer-4.jpg 800w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/Ultrasonic-Welding-Transducer-4-600x600.jpg 600w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/Ultrasonic-Welding-Transducer-4-100x100.jpg 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><span class=\"gallery_caption\">Ultrasonic Welding Transducer<\/span><\/a><\/div><div class=\"col-sm-6 col-md-4 col-lg-2\"><a href=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/Ultrasonic-Cell-Disruptor-Homogenizer-Transducer-4.jpg\" title=\"Ultrasonic Cell Disruptor Transducer\" class=\"hoverBorder\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/Ultrasonic-Cell-Disruptor-Homogenizer-Transducer-4.jpg\" class=\"attachment-full size-full\" alt=\"Ultrasonic Cell Disruptor Homogenizer Transducer (4)\" link=\"file\" size=\"full\" columns=\"6\" ids=\"23744,19551,42268,42279,4845,42294\" orderby=\"post__in\" include=\"23744,19551,42268,42279,4845,42294\" srcset=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/Ultrasonic-Cell-Disruptor-Homogenizer-Transducer-4.jpg 800w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/Ultrasonic-Cell-Disruptor-Homogenizer-Transducer-4-600x600.jpg 600w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/Ultrasonic-Cell-Disruptor-Homogenizer-Transducer-4-100x100.jpg 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><span class=\"gallery_caption\">Ultrasonic Cell Disruptor Transducer<\/span><\/a><\/div><div class=\"col-sm-6 col-md-4 col-lg-2\"><a href=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/07\/Ultrasonic-Vibration-Transducer.jpg\" title=\"Ultrasonic Vibration Transducer\" class=\"hoverBorder\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"700\" src=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/07\/Ultrasonic-Vibration-Transducer.jpg\" class=\"attachment-full size-full\" alt=\"Ultrasonic Vibration Transducer\" link=\"file\" size=\"full\" columns=\"6\" ids=\"23744,19551,42268,42279,4845,42294\" orderby=\"post__in\" include=\"23744,19551,42268,42279,4845,42294\" srcset=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/07\/Ultrasonic-Vibration-Transducer.jpg 700w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/07\/Ultrasonic-Vibration-Transducer-600x600.jpg 600w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/07\/Ultrasonic-Vibration-Transducer-100x100.jpg 100w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><span class=\"gallery_caption\">Ultrasonic Vibration Transducer<\/span><\/a><\/div><div class=\"col-sm-6 col-md-4 col-lg-2\"><a href=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/PZT-Piezo-Ceramics-Disk-for-Beauty-Application.avif\" title=\"Ultrasonic Beauty Transducer\" class=\"hoverBorder\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/PZT-Piezo-Ceramics-Disk-for-Beauty-Application.avif\" class=\"attachment-full size-full\" alt=\"PZT Piezo Ceramics Disk for Beauty Application\" link=\"file\" size=\"full\" columns=\"6\" ids=\"23744,19551,42268,42279,4845,42294\" orderby=\"post__in\" include=\"23744,19551,42268,42279,4845,42294\" srcset=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/PZT-Piezo-Ceramics-Disk-for-Beauty-Application.avif 800w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/PZT-Piezo-Ceramics-Disk-for-Beauty-Application-600x600.avif 600w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/08\/PZT-Piezo-Ceramics-Disk-for-Beauty-Application-100x100.avif 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><span class=\"gallery_caption\">Ultrasonic Beauty Transducer<\/span><\/a><\/div><\/div><\/div>\n<p>M\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn ph\u00e2n lo\u1ea1i kh\u00e1c d\u1ef1a tr\u00ean v\u1eadt li\u1ec7u g\u1ed1m \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng:<\/p>\n<ul>\n<li><strong>D\u00f2ng PZT4:<\/strong> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7c tr\u01b0ng b\u1edfi c\u00e1c chip m\u00e0u \u0111en.<\/li>\n<li><strong>D\u00f2ng PZT8:<\/strong> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c nh\u1eadn d\u1ea1ng b\u1edfi c\u00e1c chip m\u00e0u v\u00e0ng.<\/li>\n<\/ul>\n<p>Ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean t\u1ea7n s\u1ed1 c\u0169ng ph\u1ed5 bi\u1ebfn:<\/p>\n<ul>\n<li><strong>D\u00f2ng T\u1ea7n s\u1ed1 Th\u1ea5p:<\/strong> Dao \u0111\u1ed9ng t\u1eeb 17 \u0111\u1ebfn 23 kHz.<\/li>\n<li><strong>D\u00f2ng T\u1ea7n s\u1ed1 Trung b\u00ecnh:<\/strong> T\u1eeb 25 \u0111\u1ebfn 28 kHz.<\/li>\n<li><strong>D\u00f2ng T\u1ea7n s\u1ed1 Cao:<\/strong> T\u1eeb 33 \u0111\u1ebfn 60 kHz.<\/li>\n<li><strong>D\u00f2ng T\u1ea7n s\u1ed1 Si\u00eau Cao:<\/strong> K\u00e9o d\u00e0i t\u1eeb 68 \u0111\u1ebfn 200 kHz.<\/li>\n<\/ul>\n<p>C\u00e1c lo\u1ea1i d\u1ef1a tr\u00ean c\u00f4ng su\u1ea5t bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>D\u00f2ng 50W:<\/strong> C\u00f3 th\u1ec3 bao g\u1ed3m c\u00e1c \u0111\u1ea7u d\u00f2 60W.<\/li>\n<li><strong>D\u00f2ng 100W:<\/strong> Bao g\u1ed3m 80W v\u00e0 c\u00e1c m\u1ee9c c\u00f4ng su\u1ea5t t\u01b0\u01a1ng t\u1ef1 kh\u00e1c.<\/li>\n<li><strong>C\u00e1c C\u00f4ng su\u1ea5t Kh\u00f4ng Th\u00f4ng th\u01b0\u1eddng Kh\u00e1c:<\/strong> \u0110\u1ea7u d\u00f2 c\u00f3 \u0111\u1ea7u ra c\u00f4ng su\u1ea5t kh\u00f4ng ti\u00eau chu\u1ea9n.<\/li>\n<\/ul>\n<p>Cu\u1ed1i c\u00f9ng, \u0111\u1ea7u d\u00f2 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo h\u00ecnh d\u1ea1ng v\u1eadt l\u00fd:<\/p>\n<ul>\n<li><strong>H\u00ecnh Tr\u1ee5:<\/strong> \u0110\u1ea7u d\u00f2 c\u00f3 d\u1ea1ng h\u00ecnh tr\u1ee5 ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt.<\/li>\n<li><strong>H\u00ecnh C\u00f2i:<\/strong> \u0110\u1ea7u d\u00f2 c\u00f3 h\u00ecnh d\u1ea1ng thu\u00f4n nh\u1ecdn \u0111\u1ec3 khu\u1ebfch \u0111\u1ea1i rung \u0111\u1ed9ng si\u00eau \u00e2m.<\/li>\n<\/ul>\n<h3>2. Ph\u01b0\u01a1ng ph\u00e1p \u0110\u1eb7t t\u00ean<\/h3>\n<p>\u0110\u1ea7u d\u00f2 si\u00eau \u00e2m th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c ch\u1eef c\u00e1i v\u00e0 s\u1ed1 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh. M\u1ed9t quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean ph\u1ed5 bi\u1ebfn nh\u01b0 sau, s\u1eed d\u1ee5ng m\u1ed9t v\u00ed d\u1ee5 gi\u1ea3 \u0111\u1ecbnh t\u1eeb Beijing Ultrasonic:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-815 size-full\" title=\"Ph\u01b0\u01a1ng ph\u00e1p \u0110\u1eb7t t\u00ean \u0110\u1ea7u d\u00f2 Si\u00eau \u00e2m\" src=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/04\/Ultrasonic-Transducer-Naming-Method.png\" alt=\"Ph\u01b0\u01a1ng ph\u00e1p \u0110\u1eb7t t\u00ean \u0110\u1ea7u d\u00f2 Si\u00eau \u00e2m\" width=\"512\" height=\"285\" \/><\/p>\n<p><strong>V\u00ed d\u1ee5: BJ-18 50D-35HN PZT8<\/strong><\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th align=\"left\">Th\u00e0nh ph\u1ea7n<\/th>\n<th align=\"left\">M\u00f4 t\u1ea3<\/th>\n<th align=\"left\">V\u00ed d\u1ee5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\">BJ<\/td>\n<td align=\"left\">M\u00e3 Doanh nghi\u1ec7p<\/td>\n<td align=\"left\">BJ<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C<\/td>\n<td align=\"left\">\u1ee8ng d\u1ee5ng, &#8220;L\u00e0m s\u1ea1ch&#8221;<\/td>\n<td align=\"left\">C<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">18<\/td>\n<td align=\"left\">T\u1ea7n s\u1ed1 t\u00ednh b\u1eb1ng KHz<\/td>\n<td align=\"left\">18<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">50<\/td>\n<td align=\"left\">C\u00f4ng su\u1ea5t t\u00ednh b\u1eb1ng Watt<\/td>\n<td align=\"left\">50<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">D<\/td>\n<td align=\"left\">S\u1ed1 l\u01b0\u1ee3ng G\u1ed1m \u00c1p \u0111i\u1ec7n<\/td>\n<td align=\"left\">D<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">35<\/td>\n<td align=\"left\">\u0110\u01b0\u1eddng k\u00ednh G\u1ed1m \u00c1p \u0111i\u1ec7n<\/td>\n<td align=\"left\">35<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">H<\/td>\n<td align=\"left\">H\u00ecnh d\u1ea1ng \u0110\u1ea7u d\u00f2<\/td>\n<td align=\"left\">H<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">N<\/td>\n<td align=\"left\">\u0110\u1eb7c \u0111i\u1ec3m \u0110\u1eb7c bi\u1ec7t, &#8220;Kh\u00f4ng c\u00f3 L\u1ed7&#8221;<\/td>\n<td align=\"left\">N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">PZT8<\/td>\n<td align=\"left\">Lo\u1ea1i G\u1ed1m \u00c1p \u0111i\u1ec7n<\/td>\n<td align=\"left\">PZT8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>M\u00e3 chi ti\u1ebft n\u00e0y cho ph\u00e9p x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a \u0111\u1ea7u d\u00f2. L\u01b0u \u00fd r\u1eb1ng c\u00e1c quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean c\u1ee5 th\u1ec3 c\u00f3 th\u1ec3 kh\u00e1c nhau t\u00f9y theo nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n<p><iframe loading=\"lazy\" title=\"20KHz 25KHz 28KHz 60KHz Piezo Ultrasonic Transducer for Cleaning\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/JdWn_Q0bJgc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h3>3. Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng?<\/h3>\n<p>Ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i c\u1ee7a m\u1ed9t \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m l\u00e0 chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng gi\u1eefa d\u1ea1ng \u0111i\u1ec7n v\u00e0 d\u1ea1ng \u00e2m thanh. Qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i n\u00e0y d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ph\u00e2n t\u00edch chi ti\u1ebft:<\/p>\n<p><strong>Ph\u1ea7n t\u1eed \u00c1p \u0111i\u1ec7n:<\/strong> Tr\u00e1i tim c\u1ee7a \u0111\u1ea7u d\u00f2 l\u00e0 <a href=\"https:\/\/www.bjultrasonic.com\/vi\/category\/piezoelectric-ceramic-vi\/\">ph\u1ea7n t\u1eed \u00e1p \u0111i\u1ec7n<\/a>, \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 PZT (ch\u00ec zirconate titanate). Khi m\u1ed9t tr\u01b0\u1eddng \u0111i\u1ec7n xoay chi\u1ec1u \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng, v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n s\u1ebd gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i.<\/p>\n<p><strong>T\u1ea1o S\u00f3ng \u00c2m:<\/strong> S\u1ef1 gi\u00e3n n\u1edf v\u00e0 co l\u1ea1i c\u1ee7a ph\u1ea7n t\u1eed \u00e1p \u0111i\u1ec7n t\u1ea1o ra c\u00e1c s\u00f3ng \u00e1p su\u1ea5t c\u01a1 h\u1ecdc, ch\u00ednh l\u00e0 s\u00f3ng \u00e2m thanh.<\/p>\n<p><strong>Ki\u1ec3m so\u00e1t H\u01b0\u1edbng:<\/strong> \u0110\u1ec3 t\u1eadp trung s\u00f3ng \u00e2m thanh theo m\u1ed9t h\u01b0\u1edbng c\u1ee5 th\u1ec3, thi\u1ebft k\u1ebf \u0111\u1ea7u d\u00f2 l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n<ul>\n<li><strong>L\u1edbp \u0110\u1ec7m:<\/strong> L\u1edbp n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb v\u1eadt li\u1ec7u h\u1ea5p th\u1ee5 \u00e2m thanh d\u00e0y \u0111\u1eb7c nh\u01b0 polyme ch\u1ee9a vonfram, ng\u0103n \u00e2m thanh lan truy\u1ec1n theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i. L\u1edbp \u0111\u1ec7m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf c\u1ea9n th\u1eadn v\u1edbi h\u00ecnh d\u1ea1ng c\u1ee5 th\u1ec3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ea5p th\u1ee5 ho\u00e0n to\u00e0n s\u00f3ng \u00e2m.<\/li>\n<li><strong>L\u1edbp Kh\u1edbp Tr\u1edf Kh\u00e1ng:<\/strong> L\u1edbp n\u00e0y, th\u01b0\u1eddng l\u00e0 m\u1ed9t ho\u1eb7c nhi\u1ec1u l\u1edbp c\u00f3 tr\u1edf kh\u00e1ng \u00e2m h\u1ecdc trung gian, \u0111\u01b0\u1ee3c \u0111\u1eb7t gi\u1eefa ph\u1ea7n t\u1eed \u00e1p \u0111i\u1ec7n v\u00e0 m\u00f4i tr\u01b0\u1eddng m\u00e0 \u00e2m thanh s\u1ebd lan truy\u1ec1n v\u00e0o. N\u00f3 gi\u00fap t\u1ed1i \u0111a h\u00f3a vi\u1ec7c truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh b\u1eb1ng c\u00e1ch gi\u1ea3m ph\u1ea3n x\u1ea1, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 l\u1edbp ph\u1ee7 ch\u1ed1ng ph\u1ea3n x\u1ea1 tr\u00ean k\u00ednh.<\/li>\n<\/ul>\n<p>B\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y, m\u1ed9t \u0111\u1ea7u d\u00f2 chuy\u1ec3n \u0111\u1ed5i hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh s\u00f3ng si\u00eau \u00e2m t\u1eadp trung v\u00e0 sau \u0111\u00f3 tr\u1edf l\u1ea1i th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n.<\/p>\n<p><iframe loading=\"lazy\" title=\"High Power Piezoelectric Ultrasonic Transducer - Beijing Ultrasonic\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/TBLGTvZgOw4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h3>4. Quy Tr\u00ecnh G\u1eafn K\u1ebft C\u1ee7a \u0110\u1ea7u D\u00f2 Si\u00eau \u00c2m \u00c1p \u0110i\u1ec7n<\/h3>\n<p>Quy tr\u00ecnh g\u1eafn k\u1ebft l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m \u00e1p \u0111i\u1ec7n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c b\u01b0\u1edbc v\u00e0 c\u00e2n nh\u1eafc ch\u00ednh:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th align=\"left\"><strong>B\u01b0\u1edbc<\/strong><\/th>\n<th align=\"left\"><strong>M\u00f4 t\u1ea3<\/strong><\/th>\n<th align=\"left\"><strong>T\u1ea7m quan tr\u1ecdng<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\">Ch\u1ecdn Keo<\/td>\n<td align=\"left\">Ch\u1ecdn lo\u1ea1i keo c\u00f3 \u0111\u1ed9 co ng\u00f3t khi \u0111\u00f3ng r\u1eafn th\u1ea5p v\u00e0 \u0111\u1ed9 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u1ee9ng su\u1ea5t l\u00ean ph\u1ea7n t\u1eed \u00e1p \u0111i\u1ec7n. Keo epoxy (lo\u1ea1i A+B) th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/td>\n<td align=\"left\">Gi\u1ea3m \u1ee9ng su\u1ea5t v\u00e0 t\u0103ng \u0111\u1ed9 tin c\u1eady c\u1ee7a \u0111\u1ea7u d\u00f2.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Chu\u1ea9n b\u1ecb B\u1ec1 m\u1eb7t<\/td>\n<td align=\"left\">Phun c\u00e1t b\u1ec1 m\u1eb7t c\u1ea7n g\u1eafn \u0111\u1ec3 t\u0103ng \u0111\u1ed9 b\u00e1m d\u00ednh. Sau \u0111\u00f3, l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t b\u1eb1ng acetone ho\u1eb7c c\u1ed3n.<\/td>\n<td align=\"left\">\u0110\u1ea3m b\u1ea3o li\u00ean k\u1ebft b\u1ec1n ch\u1eb7t gi\u1eefa ph\u1ea7n t\u1eed \u00e1p \u0111i\u1ec7n v\u00e0 th\u00e2n \u0111\u1ea7u d\u00f2.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C\u0103n ch\u1ec9nh<\/td>\n<td align=\"left\">\u0110\u1ea3m b\u1ea3o hi\u1ec7u ch\u1ec9nh th\u1eb3ng \u0111\u1ee9ng khi g\u1eafn b\u1eb1ng quy tr\u00ecnh \u0111inh. \u0110i\u1ec1u n\u00e0y ng\u0103n ng\u1eeba ph\u00e2n b\u1ed1 \u00e1p l\u1ef1c kh\u00f4ng \u0111\u1ec1u l\u00ean ph\u1ea7n t\u1eed \u00e1p \u0111i\u1ec7n trong qu\u00e1 tr\u00ecnh g\u1eafn k\u1ebft.<\/td>\n<td align=\"left\">\u0110\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u1ed3ng \u0111\u1ec1u t\u1eeb ph\u1ea7n t\u1eed \u00e1p \u0111i\u1ec7n.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">T\u1ea3i \u1ee8ng su\u1ea5t Tr\u01b0\u1edbc<\/td>\n<td align=\"left\">\u00c1p d\u1ee5ng \u1ee9ng su\u1ea5t tr\u01b0\u1edbc c\u00f3 ki\u1ec3m so\u00e1t trong qu\u00e1 tr\u00ecnh \u0111\u00f3ng r\u1eafn v\u1edbi \u0111\u1ed9 nh\u1ea5t qu\u00e1n ch\u00ednh x\u00e1c. \u0110i\u1ec1u n\u00e0y gi\u00fap duy tr\u00ec c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n mong mu\u1ed1n \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u su\u1ea5t \u00e2m h\u1ecdc t\u1ed1t nh\u1ea5t.<\/td>\n<td align=\"left\">C\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i v\u00e0 hi\u1ec7u su\u1ea5t chuy\u1ec3n \u0111\u1ed5i.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Ki\u1ec3m so\u00e1t Tr\u1edf kh\u00e1ng<\/td>\n<td align=\"left\">Th\u1ef1c hi\u1ec7n ki\u1ec3m so\u00e1t tr\u1edf kh\u00e1ng trong qu\u00e1 tr\u00ecnh g\u1eafn k\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u tr\u1edf kh\u00e1ng c\u1ee7a \u0111\u1ea7u d\u00f2 v\u00e0 t\u0103ng c\u01b0\u1eddng chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n-\u00e2m.<\/td>\n<td align=\"left\">T\u1ed1i \u01b0u h\u00f3a vi\u1ec7c truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a \u0111\u1ea7u d\u00f2.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Ki\u1ec3m tra Tr\u1edf kh\u00e1ng<\/td>\n<td align=\"left\">Sau khi \u0111\u00f3ng r\u1eafn, th\u1ef1c hi\u1ec7n ki\u1ec3m tra tr\u1edf kh\u00e1ng \u0111\u1ec3 x\u00e1c minh t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 \u0111\u1ed9 to\u00e0n v\u1eb9n c\u1ee7a m\u1ed1i li\u00ean k\u1ebft, \u0111\u1ea3m b\u1ea3o n\u0103ng l\u01b0\u1ee3ng t\u1ea3i \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i.<\/td>\n<td align=\"left\">\u0110\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t nh\u1ea5t qu\u00e1n gi\u1eefa c\u00e1c \u0111\u1ea7u d\u00f2 v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c l\u1ed7i ti\u1ec1m \u1ea9n v\u1ec1 hi\u1ec7u su\u1ea5t.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u0110\u1ea5u d\u00e2y v\u00e0 C\u00e1ch \u0111i\u1ec7n<\/td>\n<td align=\"left\">S\u1eed d\u1ee5ng d\u00e2y \u0111i\u1ec7n c\u1ef1c linh ho\u1ea1t v\u00e0 ph\u01b0\u01a1ng ph\u00e1p h\u00e0n ch\u1eafc ch\u1eafn, \u0111\u00e1ng tin c\u1eady. T\u0103ng c\u01b0\u1eddng c\u00e1ch \u0111i\u1ec7n \u0111\u1ec3 ng\u0103n ng\u1eeba \u0111o\u1ea3n m\u1ea1ch \u0111i\u1ec7n.<\/td>\n<td align=\"left\">Ng\u0103n ng\u1eeba h\u1ecfng h\u00f3c c\u01a1 h\u1ecdc v\u00e0 s\u1ef1 c\u1ed1 \u0111i\u1ec7n.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Ki\u1ec3m tra C\u00e1ch \u0111i\u1ec7n<\/td>\n<td align=\"left\">Th\u1ef1c hi\u1ec7n ki\u1ec3m tra c\u00e1ch \u0111i\u1ec7n sau khi \u0111\u1ea5u d\u00e2y \u0111\u1ec3 ng\u0103n ng\u1eeba m\u1ecdi r\u1ee7i ro \u0111o\u1ea3n m\u1ea1ch \u0111i\u1ec7n ho\u1eb7c h\u01b0 h\u1ecfng.<\/td>\n<td align=\"left\">\u0110\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a \u0111\u1ea7u d\u00f2<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">G\u1ee1 l\u1ed7i<\/td>\n<td align=\"left\">G\u1ee1 l\u1ed7i m\u00e1y trong n\u01b0\u1edbc n\u00f3ng (40-60\u00b0C) v\u00e0 duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 d\u01b0\u1edbi 80\u00b0C trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/td>\n<td align=\"left\">Gi\u1ea3m thi\u1ec3u r\u1ee7i ro li\u00ean quan \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng cao.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5528\" src=\"\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/04\/Bonding-Process-of-Piezoelectric-Ultrasonic-Transducer-Glue.jpg\" alt=\"Quy tr\u00ecnh G\u1eafn k\u1ebft \u0110\u1ea7u d\u00f2 Si\u00eau \u00e2m \u00c1p \u0111i\u1ec7n \" width=\"620\" height=\"465\" \/><\/h3>\n<h3>5. L\u1ef1a Ch\u1ecdn T\u1ea7n S\u1ed1<\/h3>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn t\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 v\u00e0 b\u1ea3n ch\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u ho\u1eb7c \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ea7n x\u1eed l\u00fd.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th align=\"left\"><strong>D\u1ea3i T\u1ea7n S\u1ed1<\/strong><\/th>\n<th align=\"left\"><strong>\u0110\u1eb7c \u0111i\u1ec3m<\/strong><\/th>\n<th align=\"left\"><strong>\u1ee8ng d\u1ee5ng \u0110i\u1ec3n h\u00ecnh<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\"><strong>Th\u1ea5p (17-23 kHz)<\/strong><\/td>\n<td align=\"left\">T\u1ea1o ra bong b\u00f3ng x\u00e2m th\u1ef1c l\u1edbn h\u01a1n; hi\u1ec7u qu\u1ea3 h\u01a1n tr\u00ean ch\u1ea5t b\u1ea9n n\u1eb7ng v\u00e0 v\u1eadt th\u1ec3 b\u1ec1n.<\/td>\n<td align=\"left\">L\u0129nh v\u1ef1c t\u1eeb, b\u1ea3o d\u01b0\u1ee1ng xe, ng\u00e0nh c\u00f4ng nghi\u1ec7p d\u1ec7t may.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>Trung b\u00ecnh (25-28 kHz)<\/strong><\/td>\n<td align=\"left\">Cung c\u1ea5p s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa kh\u1ea3 n\u0103ng l\u00e0m s\u1ea1ch v\u00e0 \u0111\u1ed9 nh\u1ea1y b\u1ec1 m\u1eb7t; hi\u1ec7u qu\u1ea3 tr\u00ean ch\u1ea5t b\u1ea9n v\u1eeba ph\u1ea3i.<\/td>\n<td align=\"left\">H\u1ea7u h\u1ebft x\u1eed l\u00fd c\u01a1 kh\u00ed, m\u1ea1 \u0111i\u1ec7n, ng\u00e0nh c\u00f4ng nghi\u1ec7p th\u1ef1c ph\u1ea9m.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>Cao (33-60 kHz)<\/strong><\/td>\n<td align=\"left\">T\u1ea1o ra bong b\u00f3ng x\u00e2m th\u1ef1c nh\u1ecf h\u01a1n; l\u00fd t\u01b0\u1edfng \u0111\u1ec3 l\u00e0m s\u1ea1ch tinh t\u1ebf c\u00e1c b\u1ed9 ph\u1eadn v\u00e0 b\u1ec1 m\u1eb7t m\u1ecfng manh.<\/td>\n<td align=\"left\">Chi ti\u1ebft ch\u00ednh x\u00e1c, k\u00ednh, th\u1ea5u k\u00ednh, linh ki\u1ec7n \u0111i\u1ec7n t\u1eed, b\u1ea3ng m\u1ea1ch.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>Si\u00eau Cao (68-200 kHz)<\/strong><\/td>\n<td align=\"left\">T\u1ea1o ra bong b\u00f3ng x\u00e2m th\u1ef1c nh\u1ecf nh\u1ea5t v\u1edbi t\u00e1c \u0111\u1ed9ng v\u1eadt l\u00fd th\u1ea5p v\u00e0 m\u1ee9c \u0111\u1ed9 l\u00e0m s\u1ea1ch c\u1ef1c k\u1ef3 cao.<\/td>\n<td align=\"left\">V\u1eadt li\u1ec7u c\u1ef1c k\u1ef3 nh\u1ea1y c\u1ea3m, \u1ee9ng d\u1ee5ng vi l\u01b0u v\u00e0 y sinh.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>T\u00f3m l\u1ea1i, t\u1ea7n s\u1ed1 th\u1ea5p ph\u00f9 h\u1ee3p h\u01a1n \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m l\u1edbn, trong khi t\u1ea7n s\u1ed1 cao h\u01a1n ph\u00f9 h\u1ee3p h\u01a1n cho vi\u1ec7c l\u00e0m s\u1ea1ch ch\u00ednh x\u00e1c.<\/p>\n<p>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i si\u00eau \u00e2m l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb \u0111a n\u0103ng v\u1edbi ph\u1ea1m vi \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1edd kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh rung \u0111\u1ed9ng c\u01a1 h\u1ecdc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Hi\u1ec3u r\u00f5 c\u00e1c ph\u00e2n lo\u1ea1i kh\u00e1c nhau, quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, quy tr\u00ecnh li\u00ean k\u1ebft v\u00e0 ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn t\u1ea7n s\u1ed1 l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u00e0 s\u1eed d\u1ee5ng \u0111\u00fang b\u1ed9 chuy\u1ec3n \u0111\u1ed5i cho m\u1ed9t \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. Vi\u1ec7c s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, k\u1ebft h\u1ee3p v\u1edbi k\u1ef9 thu\u1eadt thi\u1ebft k\u1ebf v\u00e0 li\u00ean k\u1ebft ch\u00ednh x\u00e1c, cho ph\u00e9p t\u1ea1o ra v\u00e0 \u0111i\u1ec1u khi\u1ec3n s\u00f3ng si\u00eau \u00e2m m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, khi\u1ebfn nh\u1eefng b\u1ed9 chuy\u1ec3n \u0111\u1ed5i n\u00e0y tr\u1edf n\u00ean v\u00f4 gi\u00e1 trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u1ed9t \u0111\u1ea7u d\u00f2 si\u00eau \u00e2m l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng t\u1eeb d\u1ea1ng n\u00e0y sang d\u1ea1ng kh\u00e1c, c\u1ee5 th\u1ec3 l\u00e0 gi\u1eefa n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh \u1edf t\u1ea7n s\u1ed1 si\u00eau \u00e2m \u2014 nh\u1eefng t\u1ea7n s\u1ed1 n\u1eb1m tr\u00ean ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi (th\u01b0\u1eddng tr\u00ean 20 kHz). N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n<\/p>\n","protected":false},"author":1,"featured_media":1326,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-72785","page","type-page","status-publish","has-post-thumbnail","hentry","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/pages\/72785","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/page"}],"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=72785"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/pages\/72785\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/1326"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=72785"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}