{"id":26079,"date":"2022-07-12T17:44:39","date_gmt":"2022-07-12T10:44:39","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=26079"},"modified":"2024-07-02T02:35:38","modified_gmt":"2024-07-01T19:35:38","slug":"giao-trinh-dien-tu-co-ban-ve-dien-tro-hoc-sua-may-tinh","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=26079","title":{"rendered":"Gi\u00e1o tr\u00ecnh \u0111i\u1ec7n t\u1eed c\u01a1 b\u1ea3n v\u1ec1 \u0111i\u1ec7n tr\u1edf – H\u1ecdc s\u1eeda m\u00e1y t\u00ednh"},"content":{"rendered":"

\u0110i\u1ec7n tr\u1edf l\u00e0 m\u1ed9t linh ki\u1ec7n \u0111i\u1ec7n t\u1eed m\u00e0 b\u1ea1n h\u1ecdc vi\u00ean n\u00e0o c\u0169ng ph\u1ea3i bi\u1ebft trong qu\u00e1 tr\u00ecnh h\u1ecdc s\u1eeda m\u00e1y t\u00ednh. Ng\u00e0y h\u00f4m nay, ch\u00fang ta s\u1ebd c\u00f9ng HLV. Tr\u01b0\u01a1ng V\u0103n Ng\u1ecdc t\u00ecm hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 \u0111i\u1ec7n tr\u1edf v\u00e0 c\u00e1ch \u0111\u1ecdc \u0111i\u1ec7n tr\u1edf nh\u00e9!<\/span><\/p>\n

\"Gi\u00e1o
Gi\u00e1o tr\u00ecnh \u0111i\u1ec7n t\u1eed c\u01a1 b\u1ea3n v\u1ec1 \u0111i\u1ec7n tr\u1edf – H\u1ecdc s\u1eeda m\u00e1y t\u00ednh<\/span><\/figcaption><\/figure>\n

1. Kh\u00e1i ni\u1ec7m \u0111i\u1ec7n tr\u1edf<\/strong><\/span><\/h2>\n

Hi\u1ec3u m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, \u0111i\u1ec7n tr\u1edf l\u00e0 linh ki\u1ec7n \u0111i\u1ec7n t\u1eed d\u00f9ng \u0111\u1ec3 c\u1ea3n tr\u1edf d\u00f2ng \u0111i\u1ec7n, k\u00fd hi\u1ec7u l\u00e0 R. \u0110\u01a1n v\u1ecb \u0111o \u0111i\u1ec7n tr\u1edf l\u00e0 Ohm (\u2126).<\/span><\/p>\n

1M\u2126 = 1.000K\u2126 = 1.000.000 \u2126<\/strong><\/span><\/p>\n

\n

Xem th\u00eam: <\/span>\u0110i\u1ec7n tr\u1edf c\u00f3 nh\u1eefng t\u00e1c d\u1ee5ng quan tr\u1ecdng n\u00e0o?<\/span><\/a><\/span><\/p>\n<\/blockquote>\n

2. C\u00e1ch t\u00ednh \u0111i\u1ec7n tr\u1edf<\/strong><\/span><\/h2>\n

\u0110i\u1ec7n tr\u1edf \u0111\u01b0\u1ee3c t\u00ednh theo c\u00f4ng th\u1ee9c:<\/span><\/p>\n

R = U\/I<\/strong><\/span><\/p>\n

Trong \u0111\u00f3:<\/span><\/p>\n

R<\/strong> l\u00e0 \u0111i\u1ec7n tr\u1edf (\u0110\u01a1n v\u1ecb: Ohm).<\/span><\/p>\n

U<\/strong> l\u00e0 hi\u1ec7u \u0111i\u1ec7n th\u1ebf (V).<\/span><\/p>\n

I<\/strong> l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n (A).<\/span><\/p>\n

C\u00f2n \u0111\u1ed1i v\u1edbi \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y d\u1eabn, b\u1ea1n t\u00ednh theo c\u00f4ng th\u1ee9c:<\/span><\/p>\n

R = \u03c1.L\/S<\/strong><\/span><\/p>\n

Trong \u0111\u00f3:<\/span><\/p>\n

R<\/strong> l\u00e0 \u0111i\u1ec7n tr\u1edf (\u0110\u01a1n v\u1ecb: Ohm).<\/span><\/p>\n

\u03c1<\/strong> l\u00e0 \u0111i\u1ec7n tr\u1edf su\u1ea5t ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ea5t li\u1ec7u.<\/span><\/p>\n

L<\/strong> l\u00e0 chi\u1ec1u d\u00e0i d\u00e2y d\u1eabn (m).<\/span><\/p>\n

S<\/strong> l\u00e0 ti\u1ebft di\u1ec7n c\u1ee7a d\u00e2y d\u1eabn (m2).<\/span><\/p>\n

3. C\u00e1ch x\u00e1c \u0111\u1ecbnh h\u01b0 h\u1ecfng c\u1ee7a \u0111i\u1ec7n tr\u1edf<\/strong><\/span><\/h2>\n

C\u00f3 2 d\u1ea1ng h\u01b0 h\u1ecfng c\u1ee7a \u0111i\u1ec7n tr\u1edf, bao g\u1ed3m: \u0111\u1ee9t v\u00e0 t\u0103ng tr\u1ecb s\u1ed1.<\/span><\/p>\n

    \n
  • \u0110\u1ee9t ng\u1eaft m\u1ea1ch d\u00f9ng \u0111\u1ed3ng h\u1ed3 \u0111o s\u1ebd b\u1eb1ng \u221e.<\/span><\/li>\n
  • T\u0103ng tr\u1ecb s\u1ed1 l\u00e0 sai gi\u00e1 tr\u1ecb th\u1ef1c (s\u1ed1 Ohm) c\u1ee7a \u0111i\u1ec7n tr\u1edf.<\/span><\/li>\n<\/ul>\n

    4. C\u00e1ch x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb \u0111i\u1ec7n tr\u1edf<\/strong><\/span><\/h2>\n

    C\u00e1ch \u0111\u1ecdc \u0111i\u1ec7n tr\u1edf \u0111\u01a1n gi\u1ea3n v\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5n \u0111\u00f3 l\u00e0 c\u00e1ch \u0111\u1ecdc \u0111i\u1ec7n tr\u1edf theo v\u1ea1ch m\u00e0u. B\u1ea1n c\u00f3 th\u1ec3 t\u00ecm hi\u1ec3u h\u01b0\u1edbng d\u1eabn chi ti\u1ebft qua b\u00e0i vi\u1ebft: \u201c<\/span>H\u01b0\u1edbng d\u1eabn c\u00e1ch \u0111\u1ecdc \u0111i\u1ec7n tr\u1edf theo v\u1ea1ch m\u00e0u<\/span><\/a>\u201d.<\/span><\/span><\/p>\n