電工基礎知識入門

1、電工自學技術(shù)資材目錄第一章直流電路...................................................................................................................................51—1電學的基本物理量............................................................

2、.......................................................5一、電量............................................................................................................................................5二、電流...............

3、.............................................................................................................................5三、電壓..........................................................................................

4、..................................................6四、電動勢、電源............................................................................................................................7五、電阻................................

5、............................................................................................................7六、電功、電功率.......................................................................................................

6、.....................8七、電流的熱效應..........................................................................................................................101—2電路.............................................................

7、........................................................................11一、電路的組成和作用..................................................................................................................11二、電路圖...............

8、.......................................................................................................................11三、電路的三種狀態(tài)..........................................................................................

9、............................121—3歐姆定律.................................................................................................................................12一、一段電阻電路的歐姆定律.......................................

10、...............................................................12二、全電路歐姆定律......................................................................................................................131—4電阻的串聯(lián)、并聯(lián)電路.............

11、............................................................................................14一、電阻的串聯(lián)電路.....................................................................................................................

12、.14二、電阻的并聯(lián)電路......................................................................................................................161—5電工測量基本知識.............................................................................

13、....................................17一、萬用表的外形及基本組成......................................................................................................18二、萬用表的使用步驟.......................................................

14、...........................................................20三、萬用表的使用注意事項..........................................................................................................20習題.....................................

15、.........................................................................................................20第二章電磁的基本知識.......................................................................................................

16、..............222—1磁的基本知識.........................................................................................................................22一、磁現(xiàn)象...................................................................

17、...................................................................22二、磁場、磁感應線......................................................................................................................22三、磁通、磁感應強度............

18、......................................................................................................23四、磁導率...............................................................................................................

19、.......................242—2電流的磁場.............................................................................................................................25一、通電直導線的磁場..................................................

20、................................................................25二、通電螺線管的磁場..................................................................................................................25電工自學技術(shù)資材4—1變壓器的基本結(jié)構(gòu)和工作原理....

21、.........................................................................................54一、變壓器的基本結(jié)構(gòu)..................................................................................................................55二、變

22、壓器的工作原理..................................................................................................................56三、幾種常見變壓器........................................................................................

23、..............................58四、變壓器的主要技術(shù)數(shù)據(jù)..........................................................................................................59五、變壓器的使用要點..........................................................

24、........................................................604—2三相異步電動機的用途和結(jié)構(gòu).............................................................................................60一、電動機概述............................................

25、..................................................................................60二、三相籠式異步電動機的基本結(jié)構(gòu)..........................................................................................614—3三相異步電動機的轉(zhuǎn)動原理.............

26、....................................................................................62一、演示實驗................................................................................................................................

27、..62二、定子旋轉(zhuǎn)磁場的產(chǎn)生..............................................................................................................62三、旋轉(zhuǎn)磁場對轉(zhuǎn)子的作用.................................................................................

28、.........................644—3三相異步電動機的使用.........................................................................................................65一、啟動.....................................................................

29、.....................................................................65二、反轉(zhuǎn)..........................................................................................................................................66三、制動.

30、.........................................................................................................................................66四、三相籠式異步電動機的銘牌數(shù)據(jù).................................................................

31、.........................67五、三相異步電動機使用要點......................................................................................................684—5單相異步電動機..................................................................

32、.....................................................69第五章簡單機床電路.........................................................................................................................715—1常用低壓電器........................

33、.................................................................................................72一、開關.....................................................................................................................

34、.....................72二、接觸器......................................................................................................................................75三、熱繼電器..................................................

35、................................................................................76四、熔斷器.....................................................................................................................................

36、.765—2機床的幾種控制線路.............................................................................................................78一、點動控制線路......................................................................................

37、....................................78二、看懂機床控制線路的基本要領..............................................................................................78三、接觸器自鎖控制線路............................................................

38、..................................................79四、接觸器聯(lián)鎖的正反轉(zhuǎn)控制線路..............................................................................................81五、C620—1型車床控制線路..........................................

39、.............................................................83習題..........................................................................................................................................84第六章安全用電........