{"id":1328,"date":"2024-09-30T05:34:33","date_gmt":"2024-09-30T05:34:33","guid":{"rendered":"https:\/\/nbaem.com\/?p=1328"},"modified":"2025-09-18T04:07:41","modified_gmt":"2025-09-18T04:07:41","slug":"electromagnet-and-permanent-magnet","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/electromagnet-and-permanent-magnet\/","title":{"rendered":"S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa \u0111i\u1ec7n t\u1eeb v\u00e0 nam ch\u00e2m v\u0129nh c\u1eedu"},"content":{"rendered":"<p>N\u1ebfu b\u1ea1n t\u1eebng th\u1eafc m\u1eafc v\u1ec1\u00a0<strong>s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa nam ch\u00e2m \u0111i\u1ec7n v\u00e0 nam ch\u00e2m v\u0129nh c\u1eedu<\/strong>, b\u1ea1n kh\u00f4ng \u0111\u01a1n \u0111\u1ed9c. Vi\u1ec7c ch\u1ecdn lo\u1ea1i nam ch\u00e2m ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 t\u1ea1o ra s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn trong m\u1ecdi th\u1ee9 t\u1eeb m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb h\u00e0ng ng\u00e0y. Trong b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 m\u1ed9t so s\u00e1nh r\u00f5 r\u00e0ng, \u0111\u01a1n gi\u1ea3n, lo\u1ea1i b\u1ecf c\u00e1c thu\u1eadt ng\u1eef k\u1ef9 thu\u1eadt \u0111\u1ec3 gi\u1ea3i th\u00edch c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c lo\u1ea1i nam ch\u00e2m n\u00e0y, n\u01a1i m\u1ed7i lo\u1ea1i n\u1ed5i b\u1eadt, v\u00e0 lo\u1ea1i n\u00e0o c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p nh\u1ea5t cho d\u1ef1 \u00e1n ho\u1eb7c \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. D\u00f9 b\u1ea1n l\u00e0 k\u1ef9 s\u01b0, sinh vi\u00ean hay ng\u01b0\u1eddi mua, hi\u1ec3u c\u00e1c nguy\u00ean l\u00fd t\u1eeb t\u00ednh n\u00e0y l\u00e0 ch\u00eca kh\u00f3a\u2014v\u00e0 NBAEM \u1edf \u0111\u00e2y \u0111\u1ec3 h\u01b0\u1edbng d\u1eabn b\u1ea1n v\u1edbi ki\u1ebfn th\u1ee9c \u0111\u00e1ng tin c\u1eady v\u00e0 v\u1eadt li\u1ec7u t\u1eeb t\u00ednh ch\u1ea5t l\u01b0\u1ee3ng. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t thi\u1ebft y\u1ebfu gi\u00fap b\u1ea1n \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh th\u00f4ng minh v\u00e0 s\u00e1ng su\u1ed1t h\u01a1n.<\/p>\n<h2>Nam ch\u00e2m l\u00e0 g\u00ec<\/h2>\n<p>Nam ch\u00e2m l\u00e0 b\u1ea5t k\u1ef3 v\u1eadt th\u1ec3 n\u00e0o t\u1ea1o ra tr\u01b0\u1eddng t\u1eeb, thu h\u00fat c\u00e1c v\u1eadt li\u1ec7u ferromagnetic nh\u01b0 s\u1eaft, niken ho\u1eb7c cobalt. Tr\u01b0\u1eddng t\u1eeb n\u00e0y v\u00f4 h\u00ecnh nh\u01b0ng \u0111\u1ee7 m\u1ea1nh \u0111\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c v\u1eadt li\u1ec7u t\u1eeb kh\u00e1c v\u00e0 t\u1ea1o ra l\u1ef1c. Nam ch\u00e2m l\u00e0 th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong v\u00f4 s\u1ed1 thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 th\u1ed1ng ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y.<\/p>\n<h2>Magnet v\u0129nh c\u1eedu l\u00e0 g\u00ec<\/h2>\n<p>&nbsp;<\/p>\n<p>Nam ch\u00e2m v\u0129nh c\u1eedu l\u00e0 v\u1eadt th\u1ec3 l\u00e0m t\u1eeb v\u1eadt li\u1ec7u duy tr\u00ec tr\u01b0\u1eddng t\u1eeb c\u1ed1 \u0111\u1ecbnh m\u00e0 kh\u00f4ng c\u1ea7n \u0111i\u1ec7n n\u0103ng. N\u00f3 ho\u1ea1t \u0111\u1ed9ng v\u00ec c\u00e1c mi\u1ec1n t\u1eeb b\u00ean trong v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo m\u1ed9t h\u01b0\u1edbng, t\u1ea1o ra l\u1ef1c t\u1eeb \u1ed5n \u0111\u1ecbnh m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean.<\/p>\n<p>Nam ch\u00e2m v\u0129nh c\u1eedu th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 neodymium v\u00e0 ferrite, mang l\u1ea1i hi\u1ec7u su\u1ea5t t\u1eeb m\u1ea1nh m\u1ebd. NBAEM chuy\u00ean cung c\u1ea5p c\u00e1c nam ch\u00e2m neodymium ch\u1ea5t l\u01b0\u1ee3ng cao n\u1ed5i ti\u1ebfng v\u1edbi s\u1ee9c m\u1ea1nh v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a t\u1eeb tr\u01b0\u1eddng. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y gi\u1eef \u0111\u01b0\u1ee3c t\u1eeb t\u00ednh theo th\u1eddi gian, l\u00fd t\u01b0\u1edfng cho vi\u1ec7c s\u1eed d\u1ee5ng l\u00e2u d\u00e0i.<\/p>\n<p>M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m ph\u1ed5 bi\u1ebfn c\u1ee7a nam ch\u00e2m v\u0129nh c\u1eedu bao g\u1ed3m:<\/p>\n<ul>\n<li>Tr\u01b0\u1eddng t\u1eeb m\u1ea1nh m\u1ebd, \u1ed5n \u0111\u1ecbnh<\/li>\n<li>Kh\u00f4ng ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng \u0111\u1ec3 duy tr\u00ec t\u1eeb t\u00ednh<\/li>\n<li>B\u1ec1n b\u1ec9, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ea5t t\u1eeb t\u00ednh t\u1ed1t<\/li>\n<\/ul>\n<p>C\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh c\u1ee7a nam ch\u00e2m v\u0129nh c\u1eedu bao g\u1ed3m \u0111\u1ed9ng c\u01a1, c\u1ea3m bi\u1ebfn v\u00e0 loa \u2014 c\u00e1c thi\u1ebft b\u1ecb y\u00eau c\u1ea7u l\u1ef1c t\u1eeb \u1ed5n \u0111\u1ecbnh m\u00e0 kh\u00f4ng c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n b\u1ed5 sung. C\u00e1c nam ch\u00e2m neodymium c\u1ee7a NBAEM \u0111\u1eb7c bi\u1ec7t ph\u1ed5 bi\u1ebfn trong c\u00e1c l\u0129nh v\u1ef1c n\u00e0y nh\u1edd k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn v\u00e0 n\u0103ng l\u01b0\u1ee3ng t\u1eeb cao.<\/p>\n<h2>Nam ch\u00e2m \u0111i\u1ec7n l\u00e0 g\u00ec<\/h2>\n<p><img decoding=\"async\" class=\"wp-image-1330\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2024\/09\/electromagnet.png\" alt=\"\u0111i\u1ec7n t\u1eeb\" width=\"268\" height=\"139\" \/><\/p>\n<p>Nam ch\u00e2m \u0111i\u1ec7n l\u00e0 lo\u1ea1i nam ch\u00e2m m\u00e0 tr\u01b0\u1eddng t\u1eeb \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua cu\u1ed9n d\u00e2y. Khi d\u00f2ng \u0111i\u1ec7n \u0111i qua cu\u1ed9n d\u00e2y, n\u00f3 t\u1ea1o ra tr\u01b0\u1eddng t\u1eeb xung quanh, bi\u1ebfn cu\u1ed9n d\u00e2y th\u00e0nh m\u1ed9t nam ch\u00e2m. N\u1ebfu d\u00f2ng \u0111i\u1ec7n ng\u1eebng, tr\u01b0\u1eddng t\u1eeb bi\u1ebfn m\u1ea5t, khi\u1ebfn nam ch\u00e2m \u0111i\u1ec7n ch\u1ec9 l\u00e0 nam ch\u00e2m t\u1ea1m th\u1eddi.<\/p>\n<p>Nam ch\u00e2m \u0111i\u1ec7n th\u01b0\u1eddng c\u00f3 l\u00f5i l\u00e0m t\u1eeb c\u00e1c v\u1eadt li\u1ec7u t\u1eeb m\u1ec1m nh\u01b0 s\u1eaft ho\u1eb7c th\u00e9p, gi\u00fap t\u1eadp trung v\u00e0 t\u0103ng c\u01b0\u1eddng tr\u01b0\u1eddng t\u1eeb. C\u00e1c v\u00f2ng d\u00e2y qu\u1ea5n ch\u1eb7t quanh l\u00f5i n\u00e0y \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a hi\u1ec7u qu\u1ea3.<\/p>\n<p>M\u1ed9t trong nh\u1eefng l\u1ee3i th\u1ebf l\u1edbn nh\u1ea5t c\u1ee7a nam ch\u00e2m \u0111i\u1ec7n l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a ch\u00fang b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh d\u00f2ng \u0111i\u1ec7n. D\u00f2ng \u0111i\u1ec7n l\u1edbn h\u01a1n ngh\u0129a l\u00e0 nam ch\u00e2m m\u1ea1nh h\u01a1n; d\u00f2ng \u0111i\u1ec7n nh\u1ecf h\u01a1n l\u00e0m y\u1ebfu \u0111i. T\u00ednh \u0111i\u1ec1u khi\u1ec3n n\u00e0y khi\u1ebfn nam ch\u00e2m \u0111i\u1ec7n r\u1ea5t h\u1eefu \u00edch trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/p>\n<p>C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m c\u1ea7n c\u1ea9u s\u1eed d\u1ee5ng nam ch\u00e2m \u0111i\u1ec7n \u0111\u1ec3 n\u00e2ng c\u00e1c v\u1eadt kim lo\u1ea1i n\u1eb7ng, m\u00e1y MRI n\u01a1i c\u00e1c tr\u01b0\u1eddng t\u1eeb m\u1ea1nh m\u1ebd l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ch\u1ee5p h\u00ecnh, v\u00e0 r\u01a1 le \u0111i\u1ec7n d\u1ef1a v\u00e0o c\u00e1c nam ch\u00e2m ki\u1ec3m so\u00e1t \u0111\u1ec3 chuy\u1ec3n m\u1ea1ch m\u1ea1ch \u0111i\u1ec7n. \u0110\u1ec3 bi\u1ebft th\u00eam v\u1ec1 v\u1eadt li\u1ec7u s\u1eed d\u1ee5ng trong nam ch\u00e2m, h\u00e3y xem c\u00e1c ph\u00e2n t\u00edch chi ti\u1ebft c\u1ee7a NBAEM v\u1ec1\u00a0<span style=\"color: #ff6600;\"><strong><a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/vi\/soft-magnetic-materials-vs-hard-magnetic-materials\/\" target=\"_blank\" rel=\"noopener\">v\u1eadt li\u1ec7u t\u1eeb m\u1ec1m so v\u1edbi v\u1eadt li\u1ec7u t\u1eeb c\u1ee9ng<\/a>.<\/strong><\/span><\/p>\n<h2>Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa nam ch\u00e2m \u0111i\u1ec7n v\u00e0 nam ch\u00e2m v\u0129nh c\u1eedu<\/h2>\n<p>Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa nam ch\u00e2m \u0111i\u1ec7n v\u00e0 nam ch\u00e2m v\u0129nh c\u1eedu gi\u00fap b\u1ea1n ch\u1ecdn \u0111\u00fang lo\u1ea1i ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a m\u00ecnh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ph\u00e2n t\u00edch c\u00e1c \u0111i\u1ec3m ch\u00ednh:<\/p>\n<div class=\"table-responsive\">\n<table class=\"table\">\n<thead>\n<tr>\n<th>\u0110\u1eb7c \u0111i\u1ec3m<\/th>\n<th>T\u1eeb tr\u01b0\u1eddng<\/th>\n<th>Nam ch\u00e2m v\u0129nh c\u1eedu<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Ngu\u1ed3n g\u1ed1c c\u1ee7a t\u1eeb t\u00ednh<\/strong><\/td>\n<td>D\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua cu\u1ed9n d\u00e2y<\/td>\n<td>V\u1eadt li\u1ec7u t\u1eeb t\u00ednh n\u1ed9i t\u1ea1i<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u1ee9c \u0111\u1ed9 m\u1ea1nh<\/strong><\/td>\n<td>\u0110i\u1ec1u ch\u1ec9nh b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n<\/td>\n<td>C\u01b0\u1eddng \u0111\u1ed9 c\u1ed1 \u0111\u1ecbnh d\u1ef1a tr\u00ean v\u1eadt li\u1ec7u<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110i\u1ec1u khi\u1ec3n<\/strong><\/td>\n<td>C\u00f3 th\u1ec3 b\u1eadt\/t\u1eaft t\u1eeb t\u00ednh ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh n\u00f3<\/td>\n<td>Lu\u00f4n c\u00f3 t\u1eeb t\u00ednh<\/td>\n<\/tr>\n<tr>\n<td><strong>Ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng<\/strong><\/td>\n<td>Y\u00eau c\u1ea7u ngu\u1ed3n \u0111i\u1ec7n li\u00ean t\u1ee5c<\/td>\n<td>Kh\u00f4ng c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td><strong>Hi\u1ec7u su\u1ea5t<\/strong><\/td>\n<td>N\u0103ng l\u01b0\u1ee3ng s\u1eed d\u1ee5ng \u0111\u1ec3 duy tr\u00ec t\u1eeb t\u00ednh<\/td>\n<td>Ho\u1ea1t \u0111\u1ed9ng m\u00e0 kh\u00f4ng c\u1ea7n n\u0103ng l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o<\/td>\n<\/tr>\n<tr>\n<td><strong>Sinh nhi\u1ec7t<\/strong><\/td>\n<td>C\u00f3 th\u1ec3 l\u00e0m n\u00f3ng do d\u00f2ng \u0111i\u1ec7n<\/td>\n<td>Nhi\u1ec7t t\u1ed1i thi\u1ec3u trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng<\/td>\n<\/tr>\n<tr>\n<td><strong>Gi\u1edbi h\u1ea1n ho\u1ea1t \u0111\u1ed9ng<\/strong><\/td>\n<td>H\u1ea1n ch\u1ebf b\u1edfi nhi\u1ec7t c\u1ee7a d\u00e2y d\u1eabn v\u00e0 ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<td>\u1ed4n \u0111\u1ecbnh trong h\u1ea7u h\u1ebft c\u00e1c \u0111i\u1ec1u ki\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110\u1ed9 b\u1ec1n v\u00e0 tu\u1ed5i th\u1ecd<\/strong><\/td>\n<td>Ph\u1ee5 thu\u1ed9c v\u00e0o cu\u1ed9n d\u00e2y v\u00e0 ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<td>Ch\u1ecbu \u0111\u1ef1ng l\u00e2u d\u00e0i, \u00edt b\u1ea3o tr\u00ec<\/td>\n<\/tr>\n<tr>\n<td><strong>Gi\u00e1 th\u00e0nh<\/strong><\/td>\n<td>Chi ph\u00ed ban \u0111\u1ea7u v\u00e0 v\u1eadn h\u00e0nh cao h\u01a1n<\/td>\n<td>Th\u01b0\u1eddng c\u00f3 chi ph\u00ed th\u1ea5p h\u01a1n theo th\u1eddi gian<\/td>\n<\/tr>\n<tr>\n<td><strong>K\u00edch th\u01b0\u1edbc v\u00e0 Tr\u1ecdng l\u01b0\u1ee3ng<\/strong><\/td>\n<td>Th\u01b0\u1eddng l\u1edbn h\u01a1n v\u00e0 n\u1eb7ng h\u01a1n do cu\u1ed9n d\u00e2y<\/td>\n<td>Th\u01b0\u1eddng nh\u1ecf g\u1ecdn v\u00e0 nh\u1eb9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>v\u1ec1 S\u1ef1 Kh\u00e1c Bi\u1ec7t<\/h3>\n<ul>\n<li><strong>Nam ch\u00e2m \u0111i\u1ec7n<\/strong>\u00a0d\u1ef1a v\u00e0o \u0111i\u1ec7n \u0111\u1ec3 t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p b\u1ea1n ki\u1ec3m so\u00e1t c\u01b0\u1eddng \u0111\u1ed9 t\u1eeb c\u1ee7a ch\u00fang v\u00e0 t\u1eaft ch\u00fang khi c\u1ea7n thi\u1ebft. Tuy nhi\u00ean, ch\u00fang ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng, sinh nhi\u1ec7t v\u00e0 c\u00f3 gi\u1edbi h\u1ea1n ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean thi\u1ebft k\u1ebf c\u1ee7a ch\u00fang.<\/li>\n<li><strong>Nam ch\u00e2m v\u0129nh c\u1eedu<\/strong>\u00a0c\u00f3 t\u1eeb t\u00ednh t\u00edch h\u1ee3p trong v\u1eadt li\u1ec7u nh\u01b0 neodymium ho\u1eb7c ferrite. Ch\u00fang kh\u00f4ng c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n, hi\u1ec7u qu\u1ea3 h\u01a1n v\u1ec1 l\u00e2u d\u00e0i v\u00e0 y\u00eau c\u1ea7u b\u1ea3o tr\u00ec t\u1ed1i thi\u1ec3u nh\u01b0ng kh\u00f4ng th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh c\u01b0\u1eddng \u0111\u1ed9 ho\u1eb7c t\u1eaft ch\u00fang.<\/li>\n<\/ul>\n<p>L\u1ef1a ch\u1ecdn gi\u1eefa ch\u00fang ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u ki\u1ec3m so\u00e1t, k\u00edch th\u01b0\u1edbc, ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed c\u1ee7a \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. V\u00ed d\u1ee5, nam ch\u00e2m \u0111i\u1ec7n n\u1ed5i b\u1eadt trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u t\u1eeb t\u00ednh theo y\u00eau c\u1ea7u, trong khi nam ch\u00e2m v\u0129nh c\u1eedu \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng \u0111\u1ec3 t\u1ea1o ra l\u1ef1c t\u1eeb \u1ed5n \u0111\u1ecbnh, kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec.<\/p>\n<h2>\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m<\/h2>\n<h3>\u01afu \u0111i\u1ec3m c\u1ee7a Nam ch\u00e2m v\u0129nh c\u1eedu<\/h3>\n<ul>\n<li><strong>Kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec:<\/strong>\u00a0Sau khi l\u1eafp \u0111\u1eb7t, nam ch\u00e2m v\u0129nh c\u1eedu kh\u00f4ng c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n ho\u1eb7c b\u1ea3o tr\u00ec th\u00eam.<\/li>\n<li><strong>Kh\u00f4ng ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng:<\/strong>\u00a0Ch\u00fang ho\u1ea1t \u0111\u1ed9ng m\u00e0 kh\u00f4ng c\u1ea7n \u0111i\u1ec7n, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m chi ph\u00ed.<\/li>\n<li><strong>Nh\u1ecf g\u1ecdn v\u00e0 nh\u1eb9:<\/strong>\u00a0Tuy\u1ec7t v\u1eddi cho c\u00e1c thi\u1ebft b\u1ecb nh\u1ecf nh\u01b0 c\u1ea3m bi\u1ebfn, loa v\u00e0 \u0111\u1ed9ng c\u01a1.<\/li>\n<li><strong>L\u1ef1c t\u1eeb \u1ed5n \u0111\u1ecbnh:<\/strong>\u00a0C\u01b0\u1eddng \u0111\u1ed9 t\u1eeb c\u1ee7a ch\u00fang duy tr\u00ec \u1ed5n \u0111\u1ecbnh theo th\u1eddi gian m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn \u0111\u1ed9ng.<\/li>\n<\/ul>\n<h3>\u01afu \u0111i\u1ec3m c\u1ee7a Nam ch\u00e2m \u0111i\u1ec7n<\/h3>\n<ul>\n<li><strong>Ki\u1ec3m so\u00e1t v\u00e0 linh ho\u1ea1t:<\/strong>\u00a0B\u1ea1n c\u00f3 th\u1ec3 b\u1eadt ho\u1eb7c t\u1eaft ch\u00fang v\u00e0 \u0111i\u1ec1u ch\u1ec9nh c\u01b0\u1eddng \u0111\u1ed9 b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n.<\/li>\n<li><strong>L\u1ef1c t\u1eeb m\u1ea1nh:<\/strong>\u00a0Nam ch\u00e2m \u0111i\u1ec7n c\u00f3 th\u1ec3 t\u1ea1o ra tr\u01b0\u1eddng t\u1eeb m\u1ea1nh h\u01a1n nhi\u1ec1u nam ch\u00e2m v\u0129nh c\u1eedu, ph\u00f9 h\u1ee3p trong c\u00e1c \u1ee9ng d\u1ee5ng n\u1eb7ng.<\/li>\n<li><strong>S\u1eed d\u1ee5ng \u0111a d\u1ea1ng:<\/strong>\u00a0Ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 c\u1ea7n c\u1ea9u, m\u00e1y MRI, v\u00e0 r\u01a1 le n\u01a1i c\u1ea7n t\u1eeb tr\u01b0\u1eddng bi\u1ebfn \u0111\u1ed5i.<\/li>\n<\/ul>\n<h3>Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Nam ch\u00e2m v\u0129nh c\u1eedu<\/h3>\n<ul>\n<li><strong>C\u01b0\u1eddng \u0111\u1ed9 c\u1ed1 \u0111\u1ecbnh:<\/strong>\u00a0B\u1ea1n kh\u00f4ng th\u1ec3 thay \u0111\u1ed5i tr\u01b0\u1eddng t\u1eeb sau khi \u0111\u00e3 t\u1ea1o ra.<\/li>\n<li><strong>H\u1ea1n ch\u1ebf b\u1edfi v\u1eadt li\u1ec7u:<\/strong>\u00a0C\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a ch\u00fang ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 neodymium, c\u00f3 th\u1ec3 \u0111\u1eaft ho\u1eb7c hi\u1ebfm.<\/li>\n<li><strong>Nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t \u0111\u1ed9:<\/strong>\u00a0Nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao c\u00f3 th\u1ec3 l\u00e0m y\u1ebfu ch\u00fang v\u0129nh vi\u1ec5n.<\/li>\n<\/ul>\n<h3>Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Nam ch\u00e2m \u0111i\u1ec7n<\/h3>\n<ul>\n<li><strong>Ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng:<\/strong>\u00a0Ch\u00fang c\u1ea7n \u0111i\u1ec7n li\u00ean t\u1ee5c \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m t\u0103ng chi ph\u00ed v\u1eadn h\u00e0nh.<\/li>\n<li><strong>Ph\u00e1t sinh nhi\u1ec7t:<\/strong>\u00a0D\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua g\u00e2y nhi\u1ec7t, c\u1ea7n h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p.<\/li>\n<li><strong>N\u1eb7ng h\u01a1n v\u00e0 c\u1ed3ng k\u1ec1nh h\u01a1n:<\/strong>\u00a0Do cu\u1ed9n d\u00e2y v\u00e0 ngu\u1ed3n \u0111i\u1ec7n, ch\u00fang th\u01b0\u1eddng l\u1edbn v\u00e0 n\u1eb7ng h\u01a1n nam ch\u00e2m v\u0129nh c\u1eedu.<\/li>\n<li><strong>Y\u00eau c\u1ea7u b\u1ea3o tr\u00ec:<\/strong>\u00a0Nhi\u1ec1u th\u00e0nh ph\u1ea7n h\u01a1n \u0111\u1ed3ng ngh\u0129a v\u1edbi nhi\u1ec1u \u0111i\u1ec3m c\u00f3 th\u1ec3 h\u1ecfng h\u00f3c v\u00e0 y\u00eau c\u1ea7u b\u1ea3o tr\u00ec.<\/li>\n<\/ul>\n<h2>\u1ee8ng d\u1ee5ng v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p<\/h2>\n<p>Khi l\u1ef1a ch\u1ecdn gi\u1eefa nam ch\u00e2m \u0111i\u1ec7n v\u00e0 nam ch\u00e2m v\u0129nh c\u1eedu, s\u1ef1 ph\u00f9 h\u1ee3p th\u01b0\u1eddng ph\u1ee5 thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 v\u00e0 nhu c\u1ea7u ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/p>\n<h3>N\u01a1i Nam ch\u00e2m v\u0129nh c\u1eedu t\u1ecfa s\u00e1ng<\/h3>\n<p>Nam ch\u00e2m v\u0129nh c\u1eedu \u0111\u01b0\u1ee3c \u01b0u ti\u00ean trong c\u00e1c thi\u1ebft b\u1ecb c\u1ea7n tr\u01b0\u1eddng t\u1eeb li\u00ean t\u1ee5c m\u00e0 kh\u00f4ng c\u1ea7n ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng ph\u1ee5. Ch\u00fang ph\u1ed5 bi\u1ebfn trong:<\/p>\n<ul>\n<li><strong>\u0110\u1ed9ng c\u01a1<\/strong>: \u0110\u1eb7c bi\u1ec7t trong c\u00e1c \u0111\u1ed9ng c\u01a1 nh\u1ecf \u0111\u1ebfn trung b\u00ecnh n\u01a1i hi\u1ec7u su\u1ea5t v\u00e0 k\u00edch th\u01b0\u1edbc quan tr\u1ecdng.<\/li>\n<li><strong>Loa<\/strong>: \u0110\u1ec3 t\u1ea1o ra \u00e2m thanh m\u00e0 kh\u00f4ng c\u1ea7n \u0111i\u1ec7n cho nam ch\u00e2m.<\/li>\n<li><strong>C\u1ea3m bi\u1ebfn<\/strong>: Cho c\u1ea3m bi\u1ebfn t\u1eeb tr\u01b0\u1eddng \u0111\u00e1ng tin c\u1eady, \u00edt b\u1ea3o tr\u00ec.<\/li>\n<\/ul>\n<p>NBAEM cung c\u1ea5p c\u00e1c nam ch\u00e2m v\u0129nh c\u1eedu ch\u1ea5t l\u01b0\u1ee3ng cao nh\u01b0 nam ch\u00e2m neodymium ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng n\u00e0y, mang l\u1ea1i hi\u1ec7u su\u1ea5t t\u1eeb tr\u01b0\u1eddng m\u1ea1nh m\u1ebd v\u00e0 \u0111\u1ed9 b\u1ec1n l\u00e2u d\u00e0i.<\/p>\n<h3>N\u01a1i Nam ch\u00e2m \u0111i\u1ec7n chi\u1ebfm \u01b0u th\u1ebf<\/h3>\n<p>Nam ch\u00e2m \u0111i\u1ec7n l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u khi c\u1ea7n b\u1eadt t\u1eaft ho\u1eb7c ki\u1ec3m so\u00e1t t\u1eeb tr\u01b0\u1eddng:<\/p>\n<ul>\n<li><strong>C\u1ea9u c\u00f4ng nghi\u1ec7p<\/strong>: \u0110\u1ec3 n\u00e2ng t\u1ea3i kim lo\u1ea1i n\u1eb7ng, b\u1eadt t\u1eaft t\u1eeb tr\u01b0\u1eddng ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 t\u0103ng an to\u00e0n.<\/li>\n<li><strong>m\u00e1y MRI<\/strong>: C\u00e1c tr\u01b0\u1eddng t\u1eeb ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1eb1ng \u0111i\u1ec7n l\u00e0 r\u1ea5t quan tr\u1ecdng \u1edf \u0111\u00e2y.<\/li>\n<li><strong>R\u01a1 le v\u00e0 c\u00f4ng t\u1eafc<\/strong>: Nam ch\u00e2m \u0111i\u1ec7n cung c\u1ea5p ki\u1ec3m so\u00e1t nhanh ch\u00f3ng, \u0111\u00e1ng tin c\u1eady.<\/li>\n<\/ul>\n<p>Nam ch\u00e2m \u0111i\u1ec7n c\u1ee7a NBAEM \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o v\u1edbi cu\u1ed9n d\u00e2y v\u00e0 v\u1eadt li\u1ec7u l\u00f5i ch\u1ea5t l\u01b0\u1ee3ng cao, ph\u00f9 h\u1ee3p ho\u00e0n h\u1ea3o cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p \u0111\u00f2i h\u1ecfi cao.<\/p>\n<h3><a id=\"remove-post-thumbnail\" href=\"https:\/\/nbaem.com\/wp-admin\/post.php?post=1328&amp;action=edit#\">X\u00f3a h\u00ecnh \u1ea3nh \u0111\u1eb7c tr\u01b0ng<\/a>L\u1ef1a ch\u1ecdn gi\u1eefa hai lo\u1ea1i<\/h3>\n<ul>\n<li>N\u1ebfu \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u\u00a0<strong>c\u01b0\u1eddng \u0111\u1ed9 t\u1eeb tr\u01b0\u1eddng li\u00ean t\u1ee5c v\u1edbi \u00edt b\u1ea3o tr\u00ec<\/strong>, nam ch\u00e2m v\u0129nh c\u1eedu c\u1ee7a NBAEM l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn v\u1eefng ch\u1eafc.<\/li>\n<li>N\u1ebfu b\u1ea1n c\u1ea7n\u00a0<strong>ki\u1ec3m so\u00e1t t\u1eeb tr\u01b0\u1eddng \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c ho\u1eb7c c\u00f4ng su\u1ea5t cao theo y\u00eau c\u1ea7u<\/strong>, nam ch\u00e2m \u0111i\u1ec7n c\u1ee7a NBAEM mang l\u1ea1i s\u1ef1 linh ho\u1ea1t \u0111\u00f3.<\/li>\n<\/ul>\n<p>M\u1ed7i lo\u1ea1i \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 \u00f4 t\u00f4, \u0111i\u1ec7n t\u1eed, y t\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t, gi\u00fap vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y tr\u1edf n\u00ean th\u1ef1c t\u1ebf khi ch\u1ecdn gi\u1ea3i ph\u00e1p nam ch\u00e2m ph\u00f9 h\u1ee3p.<\/p>\n<h2>C\u00e1ch ch\u1ecdn gi\u1eefa nam ch\u00e2m \u0111i\u1ec7n v\u00e0 nam ch\u00e2m v\u0129nh c\u1eedu<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/pub-36eea33d6f1540d281c285671ffb8664.r2.dev\/2025\/09\/18\/Electromagnets_vs_Permanent_Magnets_Selection_Crit.webp\" alt=\"Ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn Nam ch\u00e2m \u0111i\u1ec7n v\u00e0 Nam ch\u00e2m v\u0129nh c\u1eedu\" \/><\/p>\n<p>Vi\u1ec7c ch\u1ecdn \u0111\u00fang lo\u1ea1i nam ch\u00e2m ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 ch\u00ednh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn \u0111\u01a1n gi\u1ea3n d\u1ef1a tr\u00ean nhu c\u1ea7u c\u1ee7a b\u1ea1n:<\/p>\n<h3>Nhu c\u1ea7u \u1ee8ng d\u1ee5ng<\/h3>\n<ul>\n<li><strong>Nam ch\u00e2m v\u0129nh c\u1eedu<\/strong>\u00a0r\u1ea5t ph\u00f9 h\u1ee3p khi b\u1ea1n c\u1ea7n m\u1ed9t tr\u01b0\u1eddng t\u1eeb \u1ed5n \u0111\u1ecbnh, lu\u00f4n ho\u1ea1t \u0111\u1ed9ng m\u00e0 kh\u00f4ng c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n. Ho\u00e0n h\u1ea3o cho \u0111\u1ed9ng c\u01a1, c\u1ea3m bi\u1ebfn ho\u1eb7c loa.<\/li>\n<li><strong>Nam ch\u00e2m \u0111i\u1ec7n<\/strong>\u00a0ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t khi b\u1ea1n mu\u1ed1n ki\u1ec3m so\u00e1t c\u01b0\u1eddng \u0111\u1ed9 t\u1eeb ho\u1eb7c c\u1ea7n b\u1eadt t\u1eaft nam ch\u00e2m. Ch\u00fang l\u00fd t\u01b0\u1edfng cho c\u1ea7n c\u1ea9u, r\u01a1 le ho\u1eb7c m\u00e1y MRI.<\/li>\n<\/ul>\n<h3>Ng\u00e2n s\u00e1ch<\/h3>\n<div class=\"table-responsive\">\n<table class=\"table\">\n<thead>\n<tr>\n<th>Y\u1ebfu t\u1ed1<\/th>\n<th>Nam ch\u00e2m v\u0129nh c\u1eedu<\/th>\n<th>Nam ch\u00e2m \u0111i\u1ec7n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Chi ph\u00ed Ban \u0111\u1ea7u<\/td>\n<td>Th\u01b0\u1eddng cao h\u01a1n ban \u0111\u1ea7u do c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 neodymium<\/td>\n<td>C\u00f3 th\u1ec3 th\u1ea5p h\u01a1n nh\u01b0ng ph\u1ee5 thu\u1ed9c v\u00e0o cu\u1ed9n d\u00e2y v\u00e0 thi\u1ebft l\u1eadp ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td>Chi ph\u00ed V\u1eadn h\u00e0nh<\/td>\n<td>Kh\u00f4ng t\u1ed1n \u2013 kh\u00f4ng c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<td>Chi ph\u00ed \u0111i\u1ec7n n\u0103ng li\u00ean t\u1ee5c<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3o tr\u00ec<\/td>\n<td>T\u1ed1i thi\u1ec3u<\/td>\n<td>C\u00f3 th\u1ec3 y\u00eau c\u1ea7u ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 nhi\u1ec1u h\u01a1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Y\u00eau c\u1ea7u v\u1ec1 hi\u1ec7u su\u1ea5t<\/h3>\n<ul>\n<li><strong>M\u1ee9c \u0111\u1ed9 m\u1ea1nh<\/strong>: Nam ch\u00e2m \u0111i\u1ec7n c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1ef1c t\u1eeb cao, \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c. Nam ch\u00e2m v\u0129nh c\u1eedu c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 c\u1ed1 \u0111\u1ecbnh do ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u quy\u1ebft \u0111\u1ecbnh.<\/li>\n<li><strong>\u0110i\u1ec1u khi\u1ec3n<\/strong>: Nam ch\u00e2m \u0111i\u1ec7n cho ph\u00e9p b\u1ea1n thay \u0111\u1ed5i ho\u1eb7c c\u1eaft b\u1ecf tr\u01b0\u1eddng t\u1eeb. Nam ch\u00e2m v\u0129nh c\u1eedu th\u00ec kh\u00f4ng.<\/li>\n<li><strong>K\u00edch th\u01b0\u1edbc v\u00e0 Tr\u1ecdng l\u01b0\u1ee3ng<\/strong>: Nam ch\u00e2m v\u0129nh c\u1eedu c\u00f3 th\u1ec3 nh\u1eb9 h\u01a1n v\u00ec kh\u00f4ng c\u1ea7n cu\u1ed9n d\u00e2y ho\u1eb7c ngu\u1ed3n cung c\u1ea5p \u0111i\u1ec7n.<\/li>\n<\/ul>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng<\/h3>\n<ul>\n<li><strong>Nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t<\/strong>: Nam ch\u00e2m v\u0129nh c\u1eedu, \u0111\u1eb7c bi\u1ec7t l\u00e0 neodymium, m\u1ea5t c\u01b0\u1eddng \u0111\u1ed9 \u1edf nhi\u1ec7t \u0111\u1ed9 cao. Nam ch\u00e2m \u0111i\u1ec7n sinh nhi\u1ec7t nh\u01b0ng c\u00f3 th\u1ec3 thi\u1ebft k\u1ebf v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p l\u00e0m m\u00e1t.<\/li>\n<li><strong>Ti\u1ebfp c\u1eadn ngu\u1ed3n \u0111i\u1ec7n<\/strong>: N\u1ebfu \u0111i\u1ec7n h\u1ea1n ch\u1ebf ho\u1eb7c kh\u00f4ng \u1ed5n \u0111\u1ecbnh, nam ch\u00e2m v\u0129nh c\u1eedu an to\u00e0n h\u01a1n.<\/li>\n<li><strong>An to\u00e0n<\/strong>: Nam ch\u00e2m \u0111i\u1ec7n c\u00f3 th\u1ec3 t\u1eaft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u tai n\u1ea1n; nam ch\u00e2m v\u0129nh c\u1eedu li\u00ean t\u1ee5c h\u00fat kim lo\u1ea1i g\u1ea7n \u0111\u00f3.<\/li>\n<\/ul>\n<p>B\u1eb1ng c\u00e1ch ph\u00f9 h\u1ee3p c\u00e1c \u0111i\u1ec3m n\u00e0y v\u1edbi nhu c\u1ea7u c\u1ee7a d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn lo\u1ea1i nam ch\u00e2m ph\u00f9 h\u1ee3p nh\u1ea5t m\u00e0 kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 ng\u00e2n s\u00e1ch ho\u1eb7c l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t.<\/p>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p li\u00ean quan \u0111\u1ebfn Nam ch\u00e2m \u0111i\u1ec7n v\u00e0 Nam ch\u00e2m v\u0129nh c\u1eedu<\/h2>\n<h3>Nam ch\u00e2m \u0111i\u1ec7n c\u00f3 th\u1ec3 thay th\u1ebf nam ch\u00e2m v\u0129nh c\u1eedu kh\u00f4ng?<\/h3>\n<p>Nam ch\u00e2m \u0111i\u1ec7n c\u00f3 th\u1ec3 thay th\u1ebf nam ch\u00e2m v\u0129nh c\u1eedu trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, \u0111\u1eb7c bi\u1ec7t khi b\u1ea1n c\u1ea7n ki\u1ec3m so\u00e1t c\u01b0\u1eddng \u0111\u1ed9 t\u1eeb tr\u01b0\u1eddng. Tuy nhi\u00ean, ch\u00fang c\u1ea7n ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng, v\u00ec v\u1eady \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u01a1n gi\u1ea3n, lu\u00f4n b\u1eadt, nam ch\u00e2m v\u0129nh c\u1eedu th\u01b0\u1eddng l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n.<\/p>\n<h3>Nam ch\u00e2m v\u0129nh c\u1eedu c\u00f3 lu\u00f4n m\u1ea1nh h\u01a1n kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng v\u1eady. M\u1ed9t s\u1ed1 nam ch\u00e2m \u0111i\u1ec7n c\u00f3 th\u1ec3 t\u1ea1o ra tr\u01b0\u1eddng t\u1eeb m\u1ea1nh h\u01a1n nhi\u1ec1u, \u0111\u1eb7c bi\u1ec7t khi \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n \u0111\u00fang c\u00e1ch. Nh\u01b0ng nam ch\u00e2m v\u0129nh c\u1eedu nh\u01b0 neodymium c\u00f3 xu h\u01b0\u1edbng c\u00f3 l\u1ef1c t\u1eeb m\u1ea1nh v\u00e0 \u1ed5n \u0111\u1ecbnh m\u00e0 kh\u00f4ng c\u1ea7n \u0111i\u1ec7n.<\/p>\n<h3>Nhi\u1ec7t \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn c\u1ea3 hai lo\u1ea1i nam ch\u00e2m?<\/h3>\n<p>Nhi\u1ec7t \u0111\u1ed9 cao c\u00f3 th\u1ec3 l\u00e0m y\u1ebfu \u0111i nam ch\u00e2m v\u0129nh c\u1eedu v\u00e0 \u0111\u00f4i khi khi\u1ebfn ch\u00fang m\u1ea5t t\u1eeb t\u00ednh v\u0129nh vi\u1ec5n. Nam ch\u00e2m \u0111i\u1ec7n x\u1eed l\u00fd nhi\u1ec7t t\u1ed1t h\u01a1n, nh\u01b0ng qu\u00e1 nhi\u1ec7t cu\u1ed9n d\u00e2y c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng l\u1edbp c\u00e1ch \u0111i\u1ec7n ho\u1eb7c gi\u1ea3m hi\u1ec7u qu\u1ea3.<\/p>\n<h3>V\u1ec1 tu\u1ed5i th\u1ecd th\u00ec sao?<\/h3>\n<p>Nam ch\u00e2m v\u0129nh c\u1eedu th\u01b0\u1eddng c\u00f3 tu\u1ed5i th\u1ecd l\u00e2u h\u01a1n v\u00ec kh\u00f4ng d\u1ef1a v\u00e0o \u0111i\u1ec7n ho\u1eb7c b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng. Nam ch\u00e2m \u0111i\u1ec7n c\u00f3 th\u1ec3 hao m\u00f2n nhanh h\u01a1n do t\u00edch nhi\u1ec7t ho\u1eb7c s\u1ef1 c\u1ed1 \u0111i\u1ec7n, nh\u01b0ng d\u1ec5 s\u1eeda ch\u1eefa ho\u1eb7c thay th\u1ebf h\u01a1n.<\/p>\n<p><strong>M\u1eb9o an to\u00e0n khi x\u1eed l\u00fd nam ch\u00e2m<\/strong><\/p>\n<ul>\n<li>Gi\u1eef nam ch\u00e2m tr\u00e1nh xa c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed nh\u1ea1y c\u1ea3m v\u00e0 c\u00e1c thi\u1ebft b\u1ecb l\u01b0u tr\u1eef t\u1eeb t\u00ednh.<\/li>\n<li>C\u1ea9n th\u1eadn v\u1edbi nguy c\u01a1 k\u1eb9p, \u0111\u1eb7c bi\u1ec7t v\u1edbi nam ch\u00e2m m\u1ea1nh.<\/li>\n<li>Tr\u00e1nh ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao ho\u1eb7c va \u0111\u1eadp c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng nam ch\u00e2m.<\/li>\n<li>S\u1eed d\u1ee5ng g\u0103ng tay c\u00e1ch \u0111i\u1ec7n khi x\u1eed l\u00fd nam ch\u00e2m \u0111i\u1ec7n l\u1edbn k\u1ebft n\u1ed1i ngu\u1ed3n \u0111i\u1ec7n.<\/li>\n<\/ul>\n<p>Nh\u1eefng m\u1eb9o n\u00e0y gi\u00fap b\u1ea1n v\u00e0 thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n an to\u00e0n khi l\u00e0m vi\u1ec7c v\u1edbi nam ch\u00e2m \u0111i\u1ec7n ho\u1eb7c nam ch\u00e2m v\u0129nh c\u1eedu.<\/p>","protected":false},"excerpt":{"rendered":"<p>N\u1ebfu b\u1ea1n t\u1eebng t\u1ef1 h\u1ecfi v\u1ec1 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa nam ch\u00e2m \u0111i\u1ec7n v\u00e0 nam ch\u00e2m v\u0129nh c\u1eedu, b\u1ea1n kh\u00f4ng \u0111\u01a1n \u0111\u1ed9c. Vi\u1ec7c ch\u1ecdn lo\u1ea1i nam ch\u00e2m ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 t\u1ea1o ra s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn trong m\u1ecdi th\u1ee9 t\u1eeb m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb h\u00e0ng ng\u00e0y. Trong b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t so s\u00e1nh r\u00f5 r\u00e0ng, \u0111\u01a1n gi\u1ea3n, lo\u1ea1i b\u1ecf c\u00e1c thu\u1eadt ng\u1eef k\u1ef9 thu\u1eadt ph\u1ee9c t\u1ea1p \u0111\u1ec3 gi\u1ea3i th\u00edch c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c lo\u1ea1i nam ch\u00e2m n\u00e0y, c\u0169ng nh\u01b0 n\u01a1i<\/p>","protected":false},"author":1,"featured_media":1101,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1328","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2022\/07\/ferrite-pot-magnet-1.png","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/comments?post=1328"}],"version-history":[{"count":8,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1328\/revisions"}],"predecessor-version":[{"id":2883,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1328\/revisions\/2883"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/1101"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=1328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=1328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=1328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}