{"id":51620,"date":"2023-04-21T13:38:23","date_gmt":"2023-04-21T18:38:23","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-ultrasonic-generator\/"},"modified":"2025-01-21T07:09:51","modified_gmt":"2025-01-21T12:09:51","slug":"diy-ultrasonic-generator","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/diy-ultrasonic-generator\/","title":{"rendered":"T\u1ef1 ch\u1ebf m\u00e1y ph\u00e1t si\u00eau \u00e2m \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u qu\u1ea3"},"content":{"rendered":"

M\u00e1y ph\u00e1t si\u00eau \u00e2m t\u1ef1 ch\u1ebf (DIY) l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch, cho ph\u00e9p b\u1ea1n kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi c\u1ee7a s\u00f3ng \u00e2m t\u1ea7n s\u1ed1 cao. T\u1eeb vi\u1ec7c l\u00e0m s\u1ea1ch \u0111\u1ed3 trang s\u1ee9c \u0111\u1ebfn xua \u0111u\u1ed5i c\u00f4n tr\u00f9ng, m\u00e1y ph\u00e1t si\u00eau \u00e2m t\u1ef1 l\u00e0m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng kh\u00e1c nhau. Tuy nhi\u00ean, vi\u1ec7c ch\u1ebf t\u1ea1o m\u1ed9t m\u00e1y ph\u00e1t si\u00eau \u00e2m hi\u1ec7u qu\u1ea3 \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u bi\u1ebft nh\u1ea5t \u0111\u1ecbnh v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n \u0111i\u1ec7n t\u1eed v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n qua quy tr\u00ecnh ch\u1ebf t\u1ea1o m\u1ed9t m\u00e1y ph\u00e1t si\u00eau \u00e2m \u0111\u01a1n gi\u1ea3n, c\u00f9ng v\u1edbi nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng ti\u1ec1m n\u0103ng.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y ph\u00e1t si\u00eau \u00e2m<\/h3>\n

M\u00e1y ph\u00e1t si\u00eau \u00e2m ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, s\u1eed d\u1ee5ng m\u1ed9t tinh th\u1ec3 \u00e1p \u0111i\u1ec7n \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u00e2m t\u1ea7n s\u1ed1 cao, th\u01b0\u1eddng n\u1eb1m ngo\u00e0i ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi (tr\u00ean 20kHz). Khi \u0111\u01b0\u1ee3c \u0111\u1eb7t d\u01b0\u1edbi \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u, tinh th\u1ec3 \u00e1p \u0111i\u1ec7n s\u1ebd dao \u0111\u1ed9ng, t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m.<\/p>\n

Linh ki\u1ec7n c\u1ea7n thi\u1ebft<\/h3>\n

\u0110\u1ec3 ch\u1ebf t\u1ea1o m\u00e1y ph\u00e1t si\u00eau \u00e2m, b\u1ea1n c\u1ea7n chu\u1ea9n b\u1ecb c\u00e1c linh ki\u1ec7n sau:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Linh ki\u1ec7n<\/th>\nM\u00f4 t\u1ea3<\/th>\nS\u1ed1 l\u01b0\u1ee3ng<\/th>\n<\/tr>\n<\/thead>\n
Tinh th\u1ec3 \u00e1p \u0111i\u1ec7n<\/td>\nLo\u1ea1i 40kHz ho\u1eb7c t\u01b0\u01a1ng t\u1ef1<\/td>\n1<\/td>\n<\/tr>\n
Transistor NPN<\/td>\n2N2222 ho\u1eb7c t\u01b0\u01a1ng t\u1ef1<\/td>\n1<\/td>\n<\/tr>\n
\u0110i\u1ec7n tr\u1edf<\/td>\n1k\u03a9, 10k\u03a9<\/td>\nM\u1ed7i lo\u1ea1i 1<\/td>\n<\/tr>\n
T\u1ee5 \u0111i\u1ec7n<\/td>\n100nF, 10\u00b5F<\/td>\nM\u1ed7i lo\u1ea1i 1<\/td>\n<\/tr>\n
Ngu\u1ed3n \u0111i\u1ec7n<\/td>\n9V DC<\/td>\n1<\/td>\n<\/tr>\n
D\u00e2y n\u1ed1i<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
B\u1ea3ng m\u1ea1ch in<\/td>\n<\/td>\n1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

S\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/h3>\n

S\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n cho m\u00e1y ph\u00e1t si\u00eau \u00e2m kh\u00e1 \u0111\u01a1n gi\u1ea3n. Transistor ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 khu\u1ebfch \u0111\u1ea1i, \u0111i\u1ec1u khi\u1ec3n d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua tinh th\u1ec3 \u00e1p \u0111i\u1ec7n. T\u1ee5 \u0111i\u1ec7n gi\u00fap l\u1ecdc nhi\u1ec5u v\u00e0 \u1ed5n \u0111\u1ecbnh t\u00edn hi\u1ec7u.<\/p>\n

Quy tr\u00ecnh l\u1eafp r\u00e1p<\/h3>\n
    \n
  1. \u0110\u1ea7u ti\u00ean, h\u00e0n c\u00e1c linh ki\u1ec7n l\u00ean b\u1ea3ng m\u1ea1ch in theo s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n.<\/li>\n
  2. K\u1ebft n\u1ed1i ngu\u1ed3n \u0111i\u1ec7n 9V.<\/li>\n
  3. Ki\u1ec3m tra l\u1ea1i c\u00e1c k\u1ebft n\u1ed1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 l\u1ed7i.<\/li>\n<\/ol>\n

    Ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng<\/h3>\n

    Sau khi l\u1eafp r\u00e1p xong, b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y ph\u00e1t si\u00eau \u00e2m b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t \u1ee9ng d\u1ee5ng \u0111o t\u1ea7n s\u1ed1 tr\u00ean \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng. N\u1ebfu m\u00e1y ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c, \u1ee9ng d\u1ee5ng s\u1ebd hi\u1ec3n th\u1ecb t\u1ea7n s\u1ed1 si\u00eau \u00e2m t\u01b0\u01a1ng \u1ee9ng v\u1edbi tinh th\u1ec3 \u00e1p \u0111i\u1ec7n b\u1ea1n s\u1eed d\u1ee5ng. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 th\u1eed nghi\u1ec7m b\u1eb1ng c\u00e1ch \u0111\u1eb7t m\u1ed9t gi\u1ecdt n\u01b0\u1edbc l\u00ean b\u1ec1 m\u1eb7t tinh th\u1ec3. N\u1ebfu gi\u1ecdt n\u01b0\u1edbc rung \u0111\u1ed9ng ho\u1eb7c b\u1ecb ph\u00e2n t\u00e1n, m\u00e1y ph\u00e1t si\u00eau \u00e2m \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

    \u1ee8ng d\u1ee5ng<\/h3>\n

    M\u00e1y ph\u00e1t si\u00eau \u00e2m t\u1ef1 ch\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c, bao g\u1ed3m l\u00e0m s\u1ea1ch \u0111\u1ed3 trang s\u1ee9c, xua \u0111u\u1ed5i c\u00f4n tr\u00f9ng, v\u00e0 th\u1eadm ch\u00ed l\u00e0 trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng y t\u1ebf. Tuy nhi\u00ean, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng vi\u1ec7c s\u1eed d\u1ee5ng s\u00f3ng si\u00eau \u00e2m c\u00f3 th\u1ec3 g\u00e2y h\u1ea1i n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u00fang c\u00e1ch.<\/p>\n

    L\u01b0u \u00fd an to\u00e0n<\/h3>\n
      \n
    • Kh\u00f4ng n\u00ean ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi tinh th\u1ec3 \u00e1p \u0111i\u1ec7n khi m\u00e1y \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/li>\n
    • Tr\u00e1nh h\u01b0\u1edbng m\u00e1y ph\u00e1t si\u00eau \u00e2m v\u00e0o tai ho\u1eb7c c\u00e1c b\u1ed9 ph\u1eadn nh\u1ea1y c\u1ea3m c\u1ee7a c\u01a1 th\u1ec3.<\/li>\n
    • Lu\u00f4n lu\u00f4n t\u1eaft ngu\u1ed3n \u0111i\u1ec7n tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n b\u1ea5t k\u1ef3 s\u1eeda ch\u1eefa ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh n\u00e0o.<\/li>\n<\/ul>\n

      Vi\u1ec7c ch\u1ebf t\u1ea1o m\u00e1y ph\u00e1t si\u00eau \u00e2m t\u1ef1 l\u00e0m kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t tr\u1ea3i nghi\u1ec7m h\u1ecdc t\u1eadp th\u00fa v\u1ecb m\u00e0 c\u00f2n m\u1edf ra c\u00e1nh c\u1eeda cho vi\u1ec7c kh\u00e1m ph\u00e1 v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 si\u00eau \u00e2m trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y. Tuy nhi\u00ean, h\u00e3y lu\u00f4n nh\u1edb tu\u00e2n th\u1ee7 c\u00e1c bi\u1ec7n ph\u00e1p an to\u00e0n \u0111\u1ec3 tr\u00e1nh nh\u1eefng r\u1ee7i ro ti\u1ec1m \u1ea9n.<\/p>\n","protected":false},"excerpt":{"rendered":"

      M\u00e1y ph\u00e1t si\u00eau \u00e2m t\u1ef1 ch\u1ebf (DIY) l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 h\u1eefu \u00edch, cho ph\u00e9p b\u1ea1n kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi c\u1ee7a s\u00f3ng \u00e2m t\u1ea7n s\u1ed1 cao. T\u1eeb vi\u1ec7c l\u00e0m s\u1ea1ch \u0111\u1ed3 trang s\u1ee9c \u0111\u1ebfn xua \u0111u\u1ed5i c\u00f4n tr\u00f9ng, m\u00e1y ph\u00e1t si\u00eau \u00e2m t\u1ef1 l\u00e0m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u t\u00ecnh<\/p>\n","protected":false},"author":1,"featured_media":19244,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-51620","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\/51620","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=51620"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/51620\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/19244"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=51620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=51620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=51620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}