继电器基础知识.docxVIP

继电器基础知识

目录

一、继电器概述..............................................3

1.1定义与分类...........................................3

1.1.1继电器的定义.....................................4

1.1.2继电器的分类.....................................5

1.2工作原理.............................................6

1.2.1电磁继电器.......................................7

1.2.2磁保持继电器.....................................7

1.2.3光电继电器.......................................8

二、继电器基本结构..........................................9

2.1外壳与绝缘材料......................................10

2.2接点系统............................................11

2.2.1常开接点........................................12

2.2.2常闭接点........................................13

2.2.3自保持接点......................................14

2.3触点驱动电路........................................15

2.4保护装置............................................16

三、继电器主要技术参数.....................................17

3.1控制容量............................................19

3.2工作电压............................................20

3.3工作电流............................................21

3.4响应时间............................................22

3.5继电器触点寿命......................................23

四、继电器选用与使用注意事项...............................24

4.1选用原则............................................26

4.1.1根据电路需求选型................................27

4.1.2考虑环境条件....................................28

4.2使用注意事项........................................29

4.2.1正确安装........................................31

4.2.2定期检查与维护..................................32

4.2.3避免误操作......................................33

五、继电器在电路中的作用与应用.............................34

5.1控制电路............................................35

5.2保护电路............................................36

5.3调节电路............................................37

5.4信号处理电路........................................38

六、继电器发展历程与趋势...................................40

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