什么是二极管,三极管,他们的作用,极向,方向,表示方法,什么叫欧姆定律,电流,电阻,电压

\u5927\u795e\u5e2e\u5e2e\u5fd9\uff0c\u6c42\u7b54\u6848

1\uff0e\u7a33\u538b\u4e8c\u6781\u7ba1\u7684\u6b63\u5e38\u5de5\u4f5c\u72b6\u6001\u662f\uff08 B \uff09
A\u3001\u5bfc\u901a\u72b6\u6001 B\u3001\u53cd\u5411\u51fb\u7a7f\u72b6\u6001 C\u3001\u622a\u6b62\u72b6\u6001 D\u3001\u4efb\u610f\u72b6\u6001
2\uff0e\u6d4b\u5f97NPN\u578b\u4e09\u6781\u7ba1\u4e0a\u5404\u7535\u6781\u7535\u4f4d\u5206\u522b\u4e3aVE\uff1d2.1V\uff0cVB\uff1d2.8V\uff0cVC\uff1d2.4V\uff0c
\u8bf4\u660e\u6b64\u4e09\u6781\u7ba1\u5904\u5728\uff08C\uff09\u3002
A\u3001\u653e\u5927\u533a B\u3001\u622a\u6b62\u533a C\u3001\u9971\u548c\u533a D\u3001\u53cd\u5411\u51fb\u7a7f\u533a
3\uff0e\u82e5\u4f7f\u4e09\u6781\u7ba1\u5177\u6709\u7535\u6d41\u653e\u5927\u80fd\u529b\uff0c\u5fc5\u987b\u6ee1\u8db3\u7684\u5916\u90e8\u6761\u4ef6\u662f\uff08 C \uff09
A\u3001\u53d1\u5c04\u7ed3\u6b63\u504f\u3001\u96c6\u7535\u7ed3\u6b63\u504f\uff1b B\u3001\u53d1\u5c04\u7ed3\u53cd\u504f\u3001\u96c6\u7535\u7ed3\u53cd\u504f\uff1b
C\u3001\u53d1\u5c04\u7ed3\u6b63\u504f\u3001\u96c6\u7535\u7ed3\u53cd\u504f\uff1b D\u3001\u53d1\u5c04\u7ed3\u53cd\u504f\u3001\u96c6\u7535\u7ed3\u6b63\u504f\u3002
4\uff0e\u4e00\u4e2a\u4e24\u8f93\u5165\u7aef\u7684\u95e8\u7535\u8def\uff0c\u5f53\u8f93\u5165\u4e3a1\u548c0\u65f6\uff0c\u8f93\u51fa\u4e0d\u662f1\u7684\u95e8\u662f\uff08D \uff09
A\u3001\u4e0e\u975e\u95e8 B\u3001\u6216\u95e8 C\u3001\u5f02\u6216\u95e8 D\u3001\u6216\u975e\u95e8
5\uff0e\u548c\u903b\u8f91\u5f0f \u8868\u793a\u4e0d\u540c\u903b\u8f91\u5173\u7cfb\u7684\u903b\u8f91\u5f0f\u662f\uff08 B \uff09
A\u3001 B\u3001 C\u3001 D\u3001
6\uff0eTTL\u540c\u6216\u95e8\u548cCMOS\u540c\u6216\u95e8\u6bd4\u8f83\uff0c\u5b83\u4eec\u7684\u903b\u8f91\u529f\u80fd\uff08B \uff09
A\u3001\u4e0d\u786e\u5b9a B\u3001\u4e0d\u4e00\u6837 C\u3001\u6709\u65f6\u4e00\u6837\uff0c\u6709\u65f6\u4e0d\u4e00\u6837 D\u3001\u4e00\u6837
7\uff0e\u9a71\u52a8\u5171\u9633\u6781\u6570\u7801\u7ba1\u663e\u793a\u201c6\u201d\uff0c\u8bd1\u7801\u5668\u8f93\u51faabcdefg\u5e94\u4e3a\uff08C \uff09
A\u30010011111 B\u30011111100 C\u30011100000 D\u30010000011
8\uff0e\u51fd\u6570F\uff08A\uff0cB\uff0cC\uff09= AB+BC+AC\u7684\u6700\u5c0f\u9879\u8868\u8fbe\u5f0f\u4e3a\uff08B \uff09
A\u3001F\uff08A\uff0cB\uff0cC\uff09=\u2211m\uff080\uff0c2\uff0c4\uff09
B\u3001F\uff08A\uff0cB\uff0cC\uff09=\u2211m\uff083\uff0c5\uff0c6\uff0c7\uff09
C\u3001F\uff08A\uff0cB\uff0cC\uff09=\u2211m\uff080\uff0c2\uff0c3\uff0c4\uff09
D\u3001F\uff08A\uff0cB\uff0cC\uff09=\u2211m\uff082\uff0c4\uff0c6\uff0c7\uff09
9\uff0e\u89e6\u53d1\u5668\u7684\u72b6\u6001\u8f6c\u6362\u56fe\u5982\u4e0b\uff0c\u5219\u5b83\u662f\uff08 D \uff09
A\u3001D\u89e6\u53d1\u5668
B\u3001RS\u89e6\u53d1\u5668
C\u3001JK\u89e6\u53d1\u5668
D\u3001T\u89e6\u53d1\u5668
10\uff0e\u5177\u6709\u7f6e0\u3001\u7f6e1\u3001\u4fdd\u6301\u548c\u7ffb\u8f6c\u529f\u80fd\u7684\u89e6\u53d1\u5668\u662f\uff08 B \uff09
A\u3001RS\u89e6\u53d1\u5668 B\u3001JK\u89e6\u53d1\u5668 C\u3001D\u89e6\u53d1\u5668 D\u3001T\u89e6\u53d1\u5668
11\uff0e\u7528\u4e07\u7528\u8868\u68c0\u6d4b\u67d0\u4e8c\u6781\u7ba1\u65f6\uff0c\u53d1\u73b0\u5176\u6b63\u3001\u53cd\u7535\u963b\u5747\u7ea6\u7b49\u4e8e1K\u03a9\uff0c\u8bf4\u660e\u8be5\u4e8c\u6781\u7ba1\uff08 C\uff09\u3002
A\u3001\u5df2\u7ecf\u51fb\u7a7f B\u3001\u5b8c\u597d\u72b6\u6001 C\u3001\u5185\u90e8\u8001\u5316\u4e0d\u901a D\u3001\u65e0\u6cd5\u5224\u65ad\u3002
12\uff0e \u6d4b\u5f97NPN\u578b\u4e09\u6781\u7ba1\u4e0a\u5404\u7535\u6781\u7535\u4f4d\u5206\u522b\u4e3aVE\uff1d2.8V\uff0cVB\uff1d2.1V\uff0cVC\uff1d12V\uff0c
\u8bf4\u660e\u6b64\u4e09\u6781\u7ba1\u5904\u5728\uff08 C \uff09\u3002
A\u3001\u653e\u5927\u533a B\u3001\u9971\u548c\u533a C\u3001\u622a\u6b62\u533a D\u3001\u53cd\u5411\u51fb\u7a7f\u533a
13\uff0e\u4e00\u4e2a\u4e24\u8f93\u5165\u7aef\u7684\u95e8\u7535\u8def\uff0c\u5f53\u8f93\u5165\u53ea\u8981\u67090\u65f6\uff0c\u8f93\u51fa\u4e0d\u662f0\u7684\u95e8\u662f\uff08 D \uff09
A\u3001\u6216\u975e\u95e8 B\u3001\u6216\u95e8 C\u3001\u5f02\u6216\u95e8 D\u3001\u4e0e\u975e\u95e8
14\uff0e\u51fd\u6570F\uff08A\uff0cB\uff0cC\uff09= AB+BC\u7684\u6700\u5c0f\u9879\u8868\u8fbe\u5f0f\u4e3a\uff08 D \uff09
A\u3001F\uff08A\uff0cB\uff0cC\uff09=\u2211m\uff080\uff0c2\uff0c4\uff09
B\u3001F\uff08A\uff0cB\uff0cC\uff09=\u2211m\uff083\uff0c5\uff0c6\uff0c7\uff09
C\u3001F\uff08A\uff0cB\uff0cC\uff09=\u2211m\uff080\uff0c1\uff0c2\uff0c4\uff0c5\uff09
D\u3001F\uff08A\uff0cB\uff0cC\uff09=\u2211m\uff083\uff0c6\uff0c7\uff09
15\uff0e\u9a71\u52a8\u5171\u9634\u6781\u6570\u7801\u7ba1\u663e\u793a\u201c6\u201d\uff0c\u8bd1\u7801\u5668\u8f93\u51faabcdefg\u5e94\u4e3a\uff08 A \uff09
A\u30010011111 B\u30011111100 C\u30011100000 D\u30010000011
16\uff0e\u89e6\u53d1\u5668\u7684\u72b6\u6001\u8f6c\u6362\u56fe\u5982\u4e0b\uff0c\u5219\u5b83\u662f\uff08 A \uff09
A\u3001D\u89e6\u53d1\u5668
B\u3001RS\u89e6\u53d1\u5668
C\u3001JK\u89e6\u53d1\u5668
D\u3001T\u89e6\u53d1\u5668
17\uff0e\u4ec5\u5177\u6709\u7ffb\u8f6c\u529f\u80fd\u7684\u89e6\u53d1\u5668\u662f\uff08D \uff09\u3002
A\u3001JK\u89e6\u53d1\u5668 B\u3001T\u89e6\u53d1\u5668 C\u3001D\u89e6\u53d1\u5668 D\u3001T\u02ca\u89e6\u53d1\u5668


- -\u4f60\u662f\u5929\u94c1\u7535\u4fe1\u54ea\u73ed\u7684

\u7535\u963b
\u5b9a\u4e49\uff1a\u5bfc\u4f53\u5bf9\u7535\u6d41\u7684\u963b\u788d\u4f5c\u7528\u5c31\u53eb\u5bfc\u4f53\u7684\u7535\u963b\u3002

\u7535\u963b\uff08Resistor\uff09\u662f\u6240\u6709\u7535\u5b50\u7535\u8def\u4e2d\u4f7f\u7528\u6700\u591a\u7684\u5143\u4ef6\u3002\u7535\u963b\u7684\u4e3b\u8981\u7269\u7406\u7279\u5f81\u662f\u53d8\u7535\u80fd\u4e3a\u70ed\u80fd\uff0c\u4e5f\u53ef\u8bf4\u5b83\u662f\u4e00\u4e2a\u8017\u80fd\u5143\u4ef6\uff0c\u7535\u6d41\u7ecf\u8fc7\u5b83\u5c31\u4ea7\u751f\u70ed\u80fd\u3002\u7535\u963b\u5728\u7535\u8def\u4e2d\u901a\u5e38\u8d77\u5206\u538b\u5206\u6d41\u7684\u4f5c\u7528\uff0c\u5bf9\u4fe1\u53f7\u6765\u8bf4\uff0c\u4ea4\u6d41\u4e0e\u76f4\u6d41\u4fe1\u53f7\u90fd\u53ef\u4ee5\u901a\u8fc7\u7535\u963b\u3002

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\u7535\u963b\u5668\u7684\u7535\u6c14\u6027\u80fd\u6307\u6807\u901a\u5e38\u6709\u6807\u79f0\u963b\u503c,\u8bef\u5dee\u4e0e\u989d\u5b9a\u529f\u7387\u7b49\u3002

\u5b83\u4e0e\u5176\u5b83\u5143\u4ef6\u4e00\u8d77\u6784\u6210\u4e00\u4e9b\u529f\u80fd\u7535\u8def\uff0c\u5982RC\u7535\u8def\u7b49\u3002

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\u7535\u963b\u7684\u5355\u4f4d\u7528\u6b27\u59c6\uff08\u03a9\uff09\u8868\u793a\u3002\u5b83\u5305\u62ec?\u03a9\uff08\u6b27\u59c6\uff09\uff0c K\u03a9\uff08\u5343\u6b27\uff09\uff0c M\u03a9\uff08\u5146\u6b27\uff09\u3002\u5176\u6362\u7b97\u5173\u7cfb\u4e3a\uff1a

1M\u03a9=1000K\u03a9 \uff0c 1K\u03a9=1000\u03a9\u3002

\u7535\u963b\u7684\u963b\u503c\u6807\u6cd5\u901a\u5e38\u6709\u8272\u73af\u6cd5\uff0c\u6570\u5b57\u6cd5\u3002\u8272\u73af\u6cd5\u5728\u4e00\u822c\u7684\u7684\u7535\u963b\u4e0a\u6bd4\u8f83\u5e38\u89c1\u3002\u7531\u4e8e\u624b\u673a\u7535\u8def\u4e2d\u7684\u7535\u963b\u4e00\u822c\u6bd4\u8f83\u5c0f\uff0c\u5f88\u5c11\u88ab\u6807\u4e0a\u963b\u503c\uff0c\u5373\u4f7f\u6709\uff0c\u4e00\u822c\u4e5f\u91c7\u7528\u6570\u5b57\u6cd5\uff0c\u5373\uff1a

101\u2014\u2014\u8868\u793a100\u03a9\u7684\u7535\u963b\uff1b 102\u2014\u2014\u8868\u793a1K\u03a9\u7684\u7535\u963b\uff1b 103\u2014\u2014\u8868\u793a10K\u03a9\u7684\u7535\u963b\uff1b 104\u2014\u2014\u8868\u793a100K\u03a9\u7684\u7535\u963b\uff1b 105\u2014\u2014\u8868\u793a1M\u03a9\u7684\u7535\u963b\uff1b 106\u2014\u2014\u8868\u793a10M\u03a9\u7684\u7535\u963b\u3002

\u5982\u679c\u4e00\u4e2a\u7535\u963b\u4e0a\u6807\u4e3a223\uff0c\u5219\u8fd9\u4e2a\u7535\u963b\u4e3a22K\u03a9\u3002\u7535\u963b\u5728\u624b\u673a\u673a\u677f\u4e0a\u4e00\u822c\u7684\u5916\u89c2\u793a\u610f\u56fe\u5982\u56fe5\u6240\u793a\uff0c\u5176\u4e24\u7aef\u4e3a\u94f6\u767d\u8272\uff0c\u4e2d\u95f4\u5927\u90e8\u5206\u4e3a\u9ed1\u8272\u3002

\u901a\u5e38\u6765\u8bf4\uff0c\u4f7f\u7528\u4e07\u7528\u8868\u53ef\u4ee5\u5f88\u5bb9\u6613\u5224\u65ad\u51fa\u7535\u963b\u7684\u597d\u574f\uff1a\u5c06\u4e07\u7528\u8868\u8c03\u8282\u5728\u7535\u963b\u6321\u7684\u5408\u9002\u6321\u4f4d\uff0c\u5e76\u5c06\u4e07\u7528\u8868\u7684\u4e24\u4e2a\u8868\u7b14\u653e\u5728\u7535\u963b\u7684\u4e24\u7aef\uff0c\u5c31\u53ef\u4ee5\u4ece\u4e07\u7528\u8868\u4e0a\u8bfb\u51fa\u7535\u963b\u7684\u963b\u503c\u3002\u5e94\u6ce8\u610f\u7684\u662f\uff0c\u6d4b\u8bd5\u7535\u963b\u65f6\u624b\u4e0d\u80fd\u63a5\u89e6\u5230\u8868\u7b14\u7684\u91d1\u5c5e\u90e8\u5206\u3002\u4f46\u5728\u5b9e\u9645\u624b\u673a\u7ef4\u4fee\u4e2d\uff0c\u5f88\u5c11\u51fa\u73b0\u7535\u963b\u635f\u574f\uff0c\u9664\u5c11\u6570\u673a\u578b\u7684\u4e00\u4e9b\u7535\u963b\u5916\uff0c\u4e5f\u5f88\u5c11\u53bb\u5173\u5fc3\u7535\u963b\u7684\u963b\u503c\u3002\u7740\u91cd\u6ce8\u610f\u7684\u662f\u7535\u963b\u662f\u5426\u865a\u710a\uff0c\u8131\u710a\u3002

-------------------------------------------------------

\u30101.\u6982\u5ff5:\u3011

\u7535\u963b\u5668(resistor):

\u7528\u5bfc\u4f53\u5236\u6210\u5177\u6709\u4e00\u5b9a\u963b\u503c\u7684\u5143\u4ef6.

\u7535\u963b\u662f\u5bfc\u4f53\u7684\u4e00\u79cd\u57fa\u672c\u6027\u8d28,\u4e0e\u5bfc\u4f53\u7684\u5c3a\u5bf8\u3001\u6750\u6599\u3001\u6e29\u5ea6\u6709\u5173.

\u4f5c\u7528:

\u4e3b\u8981\u804c\u80fd\u5c31\u662f\u963b\u788d\u7535\u6d41\u6d41\u8fc7 ,\u5e94\u7528\u4e8e\u9650\u6d41\u3001\u5206\u6d41\u3001\u964d\u538b\u3001\u5206\u538b\u3001\u8d1f\u8f7d\u4e0e\u7535\u5bb9\u914d\u5408\u4f5c\u6ee4\u6ce2\u5668\u53ca\u963b\u5339\u914d\u7b49.

\u30102.\u7535\u963b\u7684\u5206\u7c7b:\u3011

a.\u6309\u963b\u503c\u7279\u6027:\u56fa\u5b9a\u7535\u963b\u3001\u53ef\u8c03\u7535\u963b\u3001\u7279\u79cd\u7535\u963b(\u654f\u611f \u7535\u963b) .

\u4e0d\u80fd\u8c03\u8282\u7684,\u6211\u4eec\u79f0\u4e4b\u4e3a\u56fa\u5b9a\u7535\u963b,\u800c\u53ef\u4ee5\u8c03\u8282\u7684,\u6211\u4eec\u79f0\u4e4b\u4e3a\u53ef\u8c03\u7535\u963b.\u5e38\u89c1\u7684\u4f8b\u5982\u6536\u97f3\u673a\u97f3\u91cf\u8c03\u8282\u7684,\u4e3b\u8981\u5e94\u7528\u4e8e\u7535\u538b\u5206\u914d\u7684,\u6211\u4eec\u79f0\u4e4b\u4e3a\u7535\u4f4d\u5668.

b.\u6309\u5236\u9020\u6750\u6599:\u78b3\u819c\u7535\u963b\u3001\u91d1\u5c5e\u819c\u7535\u963b\u3001\u7ebf\u7ed5\u7535\u963b\u7b49.

C.\u6309\u5b89\u88c5\u65b9\u5f0f: \u63d2\u4ef6\u7535\u963b\u3001\u8d34\u7247\u7535\u963b.

\u30103.\u7535\u963b\u7684\u4e3b\u8981\u53c2\u6570:\u3011

a. \u6807\u79f0\u963b\u503c:\u6807\u79f0\u5728\u7535\u963b\u5668\u4e0a\u7684\u7535\u963b\u503c\u79f0\u4e3a\u6807\u79f0\u503c.\u5355\u4f4d: \u03a9, k\u03a9, M\u03a9.\u6807\u79f0\u503c\u662f\u6839\u636e\u56fd\u5bb6\u5236\u5b9a\u7684\u6807\u51c6\u7cfb\u5217\u6807\u6ce8\u7684,\u4e0d\u662f\u751f\u4ea7\u8005\u4efb\u610f\u6807\u5b9a\u7684. \u4e0d\u662f\u6240\u6709\u963b\u503c\u7684\u7535\u963b\u5668\u90fd\u5b58\u5728.

b.\u5141\u8bb8\u8bef\u5dee:\u7535\u963b\u5668\u7684\u5b9e\u9645\u963b\u503c\u5bf9\u4e8e\u6807\u79f0\u503c\u7684\u6700\u5927\u5141\u8bb8\u504f\u5dee\u8303\u56f4\u79f0\u4e3a\u5141\u8bb8\u8bef\u5dee.\u8bef\u5dee\u4ee3\u7801:F \u3001 G \u3001 J\u3001 K\u2026

c. \u989d\u5b9a\u529f\u7387:\u6307\u5728\u89c4\u5b9a\u7684\u73af\u5883\u6e29\u5ea6\u4e0b,\u5047\u8bbe\u5468\u56f4\u7a7a\u6c14\u4e0d\u6d41\u901a,\u5728\u957f\u671f\u8fde\u7eed\u5de5\u4f5c\u800c\u4e0d\u635f\u574f\u6216\u57fa\u672c\u4e0d\u6539\u53d8\u7535\u963b\u5668\u6027\u80fd\u7684\u60c5\u51b5\u4e0b,\u7535\u963b\u5668\u4e0a\u5141\u8bb8\u7684\u6d88\u8017\u529f\u7387.\u5e38\u89c1\u7684\u67091/16W \u3001 1/8W \u3001 1/4W \u3001 1/2W \u3001 1W \u3001 2W \u3001 5W \u300110W

\u30104.\u963b\u503c\u548c\u8bef\u5dee\u7684\u6807\u6ce8\u65b9\u6cd5:\u3011

a.\u76f4\u6807\u6cd5\u2014\u5c06\u7535\u963b\u5668\u7684\u4e3b\u8981\u53c2\u6570\u548c\u6280\u672f\u6027\u80fd\u7528\u6570\u5b57\u6216\u5b57\u6bcd\u76f4\u63a5\u6807\u6ce8\u5728\u7535\u963b\u4f53\u4e0a.

eg: 5.1k \u03a9 5% 5.1k \u03a9 J

b.\u6587\u5b57\u7b26\u53f7\u6cd5\u2014\u5c06\u6587\u5b57\u3001\u6570\u5b57\u4e24\u8005\u6709\u89c4\u5f8b\u7ec4\u5408\u8d77\u6765\u8868\u793a\u7535\u963b\u5668\u7684\u4e3b\u8981\u53c2\u6570.

eg: 0.1\u03a9=\u03a91=0R1, 3.3\u03a9=3\u03a93=3R3,3K3=3.3K\u03a9

c.\u8272\u6807\u6cd5\u2014\u7528\u4e0d\u540c\u989c\u8272\u7684\u8272\u73af\u6765\u8868\u793a\u7535\u963b\u5668\u7684\u963b\u503c\u53ca\u8bef\u5dee\u7b49\u7ea7.\u666e\u901a\u7535\u963b\u4e00\u822c\u67094\u73af\u8868\u793a,\u7cbe\u5bc6\u7535\u963b\u75285\u73af.

d.\u8d34\u7247\u7535\u963b\u6807\u6ce8\u65b9\u6cd5:\u524d\u4e24\u4f4d\u8868\u793a\u6709\u6548\u6570,\u7b2c\u4e09\u4f4d\u8868\u793a\u6709\u6548\u503c\u540e\u52a0\u96f6\u7684\u4e2a\u6570.0-10\u6b27\u5e26\u5c0f\u6570\u70b9\u7535\u963b\u503c\u8868\u793a\u4e3aXRX,RXX. eg : 471=470\u03a9 105=1M 2R2=2.2\u03a9

\u30105.\u8272\u73af\u7535\u963b\u7b2c\u4e00\u73af\u5982\u4f55\u786e\u5b9a:\u3011\u8bf7\u53c2\u7167\u8272\u6807\u6cd5\u56fe\u7247

a.\u56db\u73af\u7535\u963b:

\u56e0\u8868\u793a\u8bef\u5dee\u7684\u8272\u73af\u53ea\u6709\u91d1\u8272\u6216\u94f6\u8272,\u8272\u73af\u4e2d\u7684\u91d1\u8272\u6216\u94f6\u8272\u73af\u4e00\u5b9a\u662f\u7b2c\u56db\u73af.

b.\u4e94\u73af\u7535\u963b:

(1)\u4ece\u963b\u503c\u8303\u56f4\u5224\u65ad:\u56e0\u4e3a\u4e00\u822c\u7535\u963b\u8303\u56f4\u662f0-10M,\u5982\u679c\u6211\u4eec\u8bfb\u51fa\u7684\u963b\u503c\u8d85\u8fc7\u8fd9\u4e2a\u8303\u56f4,\u53ef\u80fd\u662f\u7b2c\u4e00\u73af\u9009\u9519\u4e86.

(2)\u4ece\u8bef\u5dee\u73af\u7684\u989c\u8272\u5224\u65ad:\u8868\u793a\u8bef\u5dee\u7684\u8272\u73af\u989c\u8272\u6709\u94f6\u3001\u91d1\u3001\u7d2b\u3001\u84dd\u3001\u7eff\u3001\u7ea2\u3001\u68d5.\u5982\u91cc\u9760\u8fd1\u7535\u963b\u5668\u7aef\u5934\u7684\u8272\u73af\u4e0d\u662f\u8bef\u5dee\u989c\u8272,\u5219\u53ef\u786e\u5b9a\u4e3a\u7b2c\u4e00\u73af.

\u30106.\u666e\u901a\u7535\u963b\u7684\u9009\u7528\u5e38\u8bc6:\u3011

a.\u6b63\u786e\u9009\u6709\u7535\u963b\u5668\u7684\u963b\u503c\u548c\u8bef\u5dee:

\u963b\u503c\u9009\u7528:\u539f\u5219\u662f\u6240\u7528\u7535\u963b\u5668\u7684\u6807\u79f0\u963b\u503c\u4e0e\u6240\u9700\u7535\u963b\u5668\u963b\u503c\u5dee\u503c\u8d8a\u5c0f\u8d8a\u597d.

\u8bef\u5dee\u9009\u7528:\u65f6\u95f4\u5e38\u6570RC\u7535\u8def\u6240\u9700\u7535\u963b\u5668\u7684\u8bef\u5dee\u5c3d\u91cf\u5c0f.\u4e00\u822c\u53ef\u90095%\u4ee5\u5185.\u5bf9\u9000\u8026\u7535\u8def,\u53cd\u9988\u7535\u8def\u6ee4\u6ce2\u7535\u8def\u8d1f\u8f7d\u7535\u8def\u5bf9\u8bef\u5dee\u8981\u6c42\u4e0d\u592a\u9ad8.\u53ef\u900910%-20%\u7684\u7535\u963b\u5668.

b.\u6ce8\u610f\u7535\u963b\u5668\u7684\u6781\u9650\u53c2\u6570:

\u989d\u5b9a\u7535\u538b:\u5f53\u5b9e\u9645\u7535\u538b\u8d85\u8fc7\u989d\u5b9a\u7535\u538b\u65f6,\u5373\u4fbf\u6ee1\u8db3\u529f\u7387\u8981\u6c42,\u7535\u963b\u5668\u4e5f\u4f1a\u88ab\u51fb\u7a7f\u635f\u574f.

\u989d\u5b9a\u529f\u7387:\u6240\u9009\u7535\u963b\u5668\u7684\u989d\u5b9a\u529f\u7387\u5e94\u5927\u4e8e\u5b9e\u9645\u627f\u53d7\u529f\u7387\u7684\u4e24\u500d\u4ee5\u4e0a\u624d\u80fd\u4fdd\u8bc1\u7535\u963b\u5668\u5728\u7535\u8def\u4e2d\u957f\u671f\u5de5\u4f5c\u7684\u53ef\u9760\u6027.

c.\u8981\u9996\u9009\u901a\u7528\u578b\u7535\u963b\u5668:

\u901a\u7528\u578b\u7535\u963b\u5668\u79cd\u7c7b\u8f83\u591a\u3001\u89c4\u683c\u9f50\u5168\u3001\u751f\u4ea7\u6279\u91cf\u5927,\u4e14\u963b\u503c\u8303\u56f4\u3001\u5916\u89c2\u5f62\u72b6\u3001\u4f53\u79ef\u5927\u5c0f\u90fd\u6709\u6311\u9009\u7684\u4f59\u7684,\u4fbf\u4e8e\u91c7\u8d2d\u3001\u7ef4\u4fee.

d.\u6839\u636e\u7535\u8def\u7279\u70b9\u9009\u7528:

\u9ad8\u9891\u7535\u8def:\u5206\u5e03\u53c2\u6570\u8d8a\u5c0f\u8d8a\u597d,\u5e94\u9009\u7528\u91d1\u5c5e\u819c\u7535\u963b\u3001\u91d1\u5c5e\u6c27\u5316\u819c\u7535\u963b\u7b49\u9ad8\u9891\u7535\u963b.

\u4f4e\u9891\u7535\u8def:\u7ed5\u7ebf\u7535\u963b\u3001\u78b3\u819c\u7535\u963b\u90fd\u9002\u7528.

\u529f\u7387\u653e\u5927\u7535\u8def\u3001\u504f\u7f6e\u7535\u8def\u3001\u53d6\u6837\u7535\u8def:\u7535\u8def\u5bf9\u7a33\u5b9a\u6027\u8981\u6c42\u6bd4\u8f83\u9ad8,\u5e94\u9009\u6e29\u5ea6\u7cfb\u6570\u5c0f\u7684\u7535\u963b\u5668.

\u9000\u8026\u7535\u8def\u3001\u6ee4\u6ce2\u7535\u8def: \u5bf9\u963b\u503c\u53d8\u5316\u6ca1\u6709\u4e25\u683c\u8981\u6c42,\u4efb\u4f55\u7c7b\u7535\u963b\u5668\u90fd\u9002\u7528. e.\u6839\u636e\u7535\u8def\u677f\u5927\u5c0f\u9009\u7528\u7535\u963b:

\u30107.\u654f\u611f\u7535\u963b\u5668\u5e38\u8bc6:

a.\u70ed\u654f\u7535\u963b:

\u662f\u4e00\u79cd\u5bf9\u6e29\u5ea6\u6781\u4e3a\u654f\u611f\u7684\u7535\u963b\u5668.\u5206\u4e3a\u6b63\u6e29\u5ea6\u7cfb\u6570\u548c\u8d1f\u6e29\u5ea6\u7cfb\u6570\u7535\u963b\u5668.\u9009\u7528\u65f6\u4e0d\u4ec5\u8981\u6ce8\u610f\u5176\u989d\u5b9a\u529f\u7387\u3001\u6700\u5927\u5de5\u4f5c\u7535\u538b\u3001\u6807\u79f0\u963b\u503c,\u66f4\u8981\u6ce8\u610f\u6700\u9ad8\u5de5\u4f5c\u6e29\u5ea6\u548c\u7535\u963b\u6e29\u5ea6\u7cfb\u6570\u7b49\u53c2\u6570,\u5e76\u6ce8\u610f\u963b\u503c\u53d8\u5316\u65b9\u5411.

b.\u5149\u654f\u7535\u963b:

\u963b\u503c\u968f\u7740\u5149\u7ebf\u7684\u5f3a\u5f31\u800c\u53d1\u751f\u53d8\u5316\u7684\u7535\u963b\u5668. \u5206\u4e3a\u53ef\u89c1\u5149\u5149\u654f\u7535\u963b\u3001\u7ea2\u5916\u5149\u5149\u654f\u7535\u963b\u3001\u7d2b\u5916\u5149\u5149\u654f\u7535\u963b.\u9009\u7528\u65f6\u5148\u786e\u5b9a\u7535\u8def\u7684\u5149\u8c31\u7279\u6027.

c.\u538b\u654f\u7535\u963b:

\u662f\u5bf9\u7535\u538b\u53d8\u5316\u5f88\u654f\u611f\u7684\u975e\u7ebf\u6027\u7535\u963b\u5668.\u5f53\u7535\u963b\u5668\u4e0a\u7684\u7535\u538b\u5728\u6807\u79f0\u503c\u5185\u65f6,\u7535\u963b\u5668\u4e0a\u7684\u963b\u503c\u5448\u65e0\u7a77\u5927\u72b6\u6001,\u5f53\u7535\u538b\u7565\u9ad8\u4e8e\u6807\u79f0\u7535\u538b\u65f6,\u5176\u963b\u503c\u5f88\u5feb\u4e0b\u964d,\u4f7f\u7535\u963b\u5668\u5904\u4e8e\u5bfc\u901a\u72b6\u6001,\u5f53\u7535\u538b\u51cf\u5c0f\u5230\u6807\u79f0\u7535\u538b\u4ee5\u4e0b\u65f6,\u5176\u963b\u503c\u53c8\u5f00\u59cb\u589e\u52a0.

\u538b\u654f\u7535\u963b\u53ef\u5206\u4e3a\u65e0\u6781\u6027(\u5bf9\u79f0\u578b)\u548c\u6709\u6781\u6027(\u975e\u5bf9\u79f0\u578b)\u538b\u654f\u7535\u963b.\u9009\u7528\u65f6,\u538b\u654f\u7535\u963b\u5668\u7684\u6807\u79f0\u7535\u538b\u503c\u5e94\u662f\u52a0\u5728\u538b\u654f\u7535\u963b\u5668\u4e24\u7aef\u7535\u538b\u76842-2.5\u500d.\u53e6\u9700\u6ce8\u610f\u538b\u654f\u7535\u963b\u7684\u6e29\u5ea6\u7cfb\u6570.

d.\u6e7f\u654f\u7535\u963b:

\u662f\u5bf9\u6e7f\u5ea6\u53d8\u5316\u975e\u5e38\u654f\u611f\u7684\u7535\u963b\u5668,\u80fd\u5728\u5404\u79cd\u6e7f\u5ea6\u73af\u5883\u4e2d\u4f7f\u7528.\u5b83\u662f\u5c06\u6e7f\u5ea6\u8f6c\u6362\u6210\u7535\u4fe1\u53f7\u7684\u6362\u80fd\u5668\u4ef6.\u9009\u7528\u65f6\u5e94\u6839\u636e\u4e0d\u540c\u7c7b\u578b\u53f7\u7684\u4e0d\u540c\u7279\u70b9\u4ee5\u53ca\u6e7f\u654f\u7535\u963b\u5668\u7684\u7cbe\u5ea6\u3001\u6e7f\u5ea6\u7cfb\u6570\u3001\u54cd\u5e94\u901f\u5ea6,\u6e7f\u5ea6\u91cf\u7a0b\u7b49\u8fdb\u884c\u9009\u7528.

\u6d17\u8863\u673a\u7684\u7535\u673a\u4e0a\u8981\u63a5\u4e00\u4e2a\u7535\u5bb9\uff0c\u5426\u5219\u7535\u673a\u5c31\u8f6c\u4e0d\u8d77\u6765\u3002
\u5728\u4ea4\u76f4\u6d41\u53d8\u538b\u5668\u91cc\u8f93\u51fa\u7684\u76f4\u6d41\u7535\u4e0d\u662f\u5b8c\u5168\u76f4\u6d41\uff0c\u63a5\u4e00\u4e2a\u5927\u7535\u5bb9\u80fd\u4f7f\u76f4\u6d41\u7535\u6d41\u66f4\u5e73\u7a33\u3002
\u7535\u8def\u4e2d\u7535\u5bb9\u7684\u4f5c\u7528\u771f\u662f\u6ca1\u6cd5\u7528\u51e0\u53e5\u8bdd\u8bf4\u6e05\u695a\u3002\u53ef\u4ee5\u8bf4\u4efb\u4f55\u5bb6\u7528\u7535\u5668\u91cc\u9762(\u7535\u8111\u3001\u7535\u89c6\u3001\u6536\u97f3\u673a\u3001\u3002\u3002\u3002\u3002\u54ce\uff0c\u7535\u706f\u6ce1\u4e0d\u7b97\u3002)

\u7535\u5bb9\u7684\u4f5c\u7528\uff1a

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二极管是用P型半导体和N型半导体做成的。二极管具有单向导电性,符号是一个三角形旁边划一竖线。三角形表示正极竖线表示负极。二极管的种类很多,用途也很多。如整流二极管、光电二极管、发光二极管、变容二极管、稳压二极管、单结二极管等。
三极管也是用P型半导体和N型半导体做成的。三极管有PNP型和NPN型两种。三极管主要作用是放大。常用于放大电路和震荡电路。
导体中的电流跟导体两端的电压成正比,跟导体两端的电阻成反比。这就是欧姆定律。用公式表示: I=U/R

二极管是由两块不同特性的半导体材料构成,其中一块为P 型半导体,另一块为N 型半导体,经过链接之后就形成了一个PN 极二极管。
二极管的电路符号是在一个三角形的旁边加上一条线,有线的一端为二极管的负极,另一端为正极。
二极管在电路中用“D”表示、加数字表示,如D12表示编号为12二极管。
二极管的作用:检波,整流、稳压、光电、发光、变容等。
二极管按材质可分为,者管(0.2~0.3)和硅管(0.5~0.6)
二极管的主要特性就是单向导电,也就是说二极管在正向电压时,导通电阻很小,而在反向电压时,导通电阻极大或无穷大,总之正向电阻越小越好,反向电阻越大越好,当正向电阻为无穷大时,说明二极管内部已断路,当反向电阻为0时,说明二极管已击穿,断开与击穿两种状态下均不能使用。
二极管的导通电压是:a:硅二极管在两极加上电压,并且大于0.5V ,导通后电压保持在0.5~0.8之间。 b:者二极管在两极加上电压,并且大于0.2V ,导通后电压保持在0.5~0.8之间。

二极管的极性判断:
目视判断法:一般在电路中可以通过眼睛直接判断出二极管的正负极,在电路中有有颜色的一端为二极管的负极,另一端为二极管的正极。
万用表判断法:用万用表判断二极管的正负极;(数字万用表),首先将万用表旋钮打到通断档,然后将万用表的两表笔分别与二极管的两端相接、以导通的一次为准,阻值小的一端为负极,领一端为正极。

笨蛋,到初中上学去吧!你问的我都知道,只是几句话怎么能让你学这么多知识呢!

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