基于555定时器的闪光灯设计论文

本科毕业论文

题 目：

基于555定时器的闪光灯设计 Based on the 555 timer flash design

姓 名： 胡勋武 专 业： 电子信息工程 指导教师： 文凤春

学 号 041408028

职 称 副教授

中国·武汉

二○一二年二月

基于555定时器的闪光灯设计

分类号 密级

华中农业大学本科毕业论文

基于555定时器的闪光灯设计

Based on the 555 timer flash design

学生姓名：胡勋武 学生学号：20041408028 学生专业：电子信息工程 指导教师：文凤春 副 教 授

华中农业大学理学院

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二○一二年二月

基于555定时器的闪光灯设计

目 录

1. 摘要与关键词 ....................................................................................................................... III

1.1 摘要 ...................................................................................................................... ……III 1.2 关键词 .......................................................................................................................... III 2. 绪论 ........................................................................................................................................ 1 3. 基本概念： ............................................................................................................................ 1

3.1 闪光灯： ....................................................................................................................... 1 3.2 555定时器： ................................................................................................................ 1 3.3 Xenon 闪光灯： ....................................................................................................... 1 4. 闪光灯的发展历史 .............................................................................................................. 2 5. 闪光灯的用途： .................................................................................................................. 2 6. 理论基础 ................................................................................................................................ 2

6.1 闪光灯的工作原理： ................................................................................................... 2 6.2 555定时器的电路组成与功能 .................................................................................... 3 7. 闪光灯各个部分电路组成及其功能 .................................................................................... 4

7.1 由555定时器组成的多谐振荡器 ............................................................................. 4 7.2 充放电电路 ................................................................................................................. 5 7.3 升压电路 ..................................................................................................................... 5 7.4 发光电路 ..................................................................................................................... 6 8. 可行性测试 ............................................................................................................................ 7

8.1在电脑软件proteus中仿真。 .................................................................................... 7 8.2理论值估算 .................................................................................................................... 7 9.安装及调试 .............................................................................................................................. 7

9.1 安装电路。 ................................................................................................................... 7 9.2调试电路 ........................................................................................................................ 8 10 结论 ........................................................................................................................................ 8 11 参考文献 ................................................................................................................................ 8 12 致谢 ........................................................................................................................................ 9

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基于555定时器的闪光灯设计

题目：基于555定时器的闪光灯设计

1. 摘要与关键词 1.1 摘要 555定时器是一种模拟电路和数字电路相结合的中规模集成电路，使用灵活，逻辑功能强，内部的比较器灵敏度较高,而且采用差分电路形式,用其构成的多谐振荡电路的振荡频率受电源电压和温度的影响很小,可以很方便的组成各种自己所需的电路。本文主要利用555定时器组成多谐振荡电路并为闪光灯提供所需的电压源，通过对电容充放电，来产生瞬时高压驱动闪光灯使其发光。这种电路设计可以很好解决普通照相机在拍照时闪光时间不可控,易出现红眼的问题!

1.2 关键词 555定时器；,多谢振荡电路；脉冲产生电路；闪光灯；

Absract

The 555 timer is an analog circuit and digital circuit of the combination of the scale of integrated circuits, flexible use, strong internal comparator logic functions, high sensitivity, and the use of

differential circuit form, with the multivibrator circuit oscillation frequency of power supply voltage and temperature effects is very small, can be very convenient. A variety of their own desired circuit. This paper mainly uses 555 timer multivibrator circuit and flash to provide the desired voltage source, through the charge and discharge the capacitor, to generate instantaneous high pressure drive flash to emit light. This circuit design can solve the ordinary camera camera flash time is not controllable, prone to eye problems!

Key words

555 timer; thanks for oscillation circuit, a pulse generating circuit; flash;

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