{"id":1126,"date":"2011-10-27T16:11:46","date_gmt":"2011-10-27T09:11:46","guid":{"rendered":"http:\/\/www.payitforward.edu.vn\/wordpress\/?page_id=1126"},"modified":"2011-10-27T16:19:40","modified_gmt":"2011-10-27T09:19:40","slug":"3-bien-tro","status":"publish","type":"page","link":"https:\/\/payitforward.edu.vn\/wordpress\/tutorials\/for-beginner\/3-bien-tro\/","title":{"rendered":"3. Bi\u1ebfn tr\u1edf"},"content":{"rendered":"

Lo\u1ea1t b\u00e0i v\u1ec1:<\/strong><\/span><\/p>\n

<\/span><\/p>\n

GI\u1edaI THI\u1ec6U M\u1ed8T S\u1ed0 LINH KI\u1ec6N \u2013 D\u1ee4NG C\u1ee4 C\u01a0 B\u1ea2N<\/strong><\/span><\/p>\n

<\/span><\/p>\n

D\u00c0NH CHO NG\u01af\u1edcI M\u1edaI B\u1eaeT \u0110\u1ea6U<\/strong><\/span><\/p>\n

<\/strong><\/p>\n

PH\u1ea6N 3: BI\u1ebeN TR\u1ede<\/strong><\/span><\/p>\n

Bi\u1ebfn tr\u1edf ch\u1eb3ng qua l\u00e0 \u0111i\u1ec7n tr\u1edf m\u00e0 tr\u1ecb s\u1ed1 c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u01b0\u1ee3c, b\u1eb1ng c\u00e1ch v\u1eb7n, xoay, g\u1ea1t qua g\u1ea1t l\u1ea1i, \u2026 N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 bi\u1ebfn tr\u1edf, hay \u201cchi\u1ebft \u00e1p\u201d (hay c\u00e1i chia \u00e1p).<\/p>\n

T\u00ean ti\u1ebfng Anh c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 l\u00e0 Variable resitor, potentiometer, trimmer, trimpot\u2026<\/em><\/p>\n

K\u00ed hi\u1ec7u: VR, VAR, POT, \u2026<\/p>\n

K\u00ed hi\u1ec7u tr\u00ean m\u1ea1ch:<\/p>\n

\"\"<\/p>\n

3.1 M\u1ed9t s\u1ed1 lo\u1ea1i bi\u1ebfn tr\u1edf th\u01b0\u1eddng g\u1eb7p \u1edf Nh\u1eadt (t\u1ea3o):<\/span><\/strong><\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Bi\u1ebfn tr\u1edf \u201cc\u00fac \u00e1o\u201d:<\/p>\n

\"\"<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Bi\u1ec3n tr\u1edf \u201cxanh\u201d (c\u00f3 l\u1ebd ch\u1ee3 g\u1ecdi nh\u01b0 th\u1ebf):<\/p>\n

\"\"<\/p>\n

–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Bi\u1ebfn tr\u1edf \u201cv\u00f4-lum\u201d:<\/p>\n

\"\"<\/p>\n

3.2 S\u1eed d\u1ee5ng bi\u1ebfn tr\u1edf:<\/span><\/strong><\/p>\n

Nh\u00ecn l\u00e0 th\u1ea5y, \u0111\u1ec3 thay \u0111\u1ed5i gi\u00e1 tr\u1ecb bi\u1ebfn tr\u1edf th\u00ec ta xoay, hay v\u1eb7n, hay g\u1ea1t n\u00f3 (tu\u1ef3 theo c\u1ea5u t\u1ea1o c\u1ee7a n\u00f3 m\u00e0 x\u00e0i).<\/p>\n

\"\"<\/p>\n

V\u00e0 bi\u1ebfn tr\u1edf th\u00ec c\u00f3 3 ch\u00e2n, th\u00ec 1 trong c\u00e1c ch\u00e2n \u0111\u00f3 s\u1ebd l\u00e0 \u201cch\u00e2n ch\u1ea1y\u201d. D\u00f9ng VOM \u2013 mode \u0111o Ohm \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u00e2n n\u00e0o l\u00e0 \u201cch\u00e2n ch\u1ea1y\u201d (\u0111i\u1ec7n tr\u1edf gi\u1eefa ch\u00e2n ch\u1ea1y v\u00e0 1 trong 2 ch\u00e2n c\u00f2n l\u1ea1i s\u1ebd thay \u0111\u1ed5i khi ta v\u1eb7n n\u00fam xoay).<\/p>\n

3.3 Tr\u1ecb s\u1ed1 bi\u1ebfn tr\u1edf:<\/span><\/strong><\/p>\n

Gi\u00e1 tr\u1ecb ghi tr\u00ean bi\u1ebfn tr\u1edf l\u00e0 gi\u00e1 tr\u1ecb \u0111i\u1ec7n tr\u1edf c\u1ef1c \u0111\u1ea1i c\u1ee7a n\u00f3.<\/p>\n

V\u00ed d\u1ee5:<\/p>\n

+ Bi\u1ebfn tr\u1edf c\u00f3 th\u1ec3 ghi l\u00e0: 10K (10kOhm)<\/p>\n

+ Ho\u1eb7c ghi l\u00e0: 502 (50 x 102 <\/sup>=5kOhm)<\/p>\n

Download t\u00e0i li\u1ec7u d\u01b0\u1edbi d\u1ea1ng .pdf<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Lo\u1ea1t b\u00e0i v\u1ec1: GI\u1edaI THI\u1ec6U M\u1ed8T S\u1ed0 LINH KI\u1ec6N \u2013 D\u1ee4NG C\u1ee4 C\u01a0 B\u1ea2N D\u00c0NH CHO NG\u01af\u1edcI M\u1edaI B\u1eaeT \u0110\u1ea6U PH\u1ea6N 3: BI\u1ebeN TR\u1ede Bi\u1ebfn tr\u1edf ch\u1eb3ng qua l\u00e0 \u0111i\u1ec7n tr\u1edf m\u00e0 tr\u1ecb s\u1ed1 c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u01b0\u1ee3c, b\u1eb1ng c\u00e1ch v\u1eb7n, xoay, g\u1ea1t qua g\u1ea1t l\u1ea1i, \u2026 N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 bi\u1ebfn tr\u1edf, hay \u201cchi\u1ebft \u00e1p\u201d (hay c\u00e1i chia \u00e1p). T\u00ean ti\u1ebfng Anh c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 l\u00e0 Variable resitor, potentiometer, trimmer, trimpot\u2026 K\u00ed hi\u1ec7u: VR, VAR, POT, \u2026 K\u00ed hi\u1ec7u tr\u00ean m\u1ea1ch: 3.1 M\u1ed9t s\u1ed1 lo\u1ea1i bi\u1ebfn tr\u1edf th\u01b0\u1eddng g\u1eb7p \u1edf Nh\u1eadt (t\u1ea3o): –\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Bi\u1ebfn tr\u1edf \u2026<\/p>\n

Continue reading<\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":635,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1126","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/pages\/1126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/comments?post=1126"}],"version-history":[{"count":6,"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/pages\/1126\/revisions"}],"predecessor-version":[{"id":1129,"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/pages\/1126\/revisions\/1129"}],"up":[{"embeddable":true,"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/pages\/635"}],"wp:attachment":[{"href":"https:\/\/payitforward.edu.vn\/wordpress\/wp-json\/wp\/v2\/media?parent=1126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}