| 555定时器的自动化设计及其应用 |
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| 引用本文： | 黄萍,裴素华.555定时器的自动化设计及其应用[J].现代电子技术,2007,30(18):187-188,192. |
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| 作者姓名： | 黄萍 裴素华 |
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| 作者单位： | 山东师范大学,物理与电子科学学院,山东,济南,250014 |
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| 摘 要： | 利用Multisim软件自动设计和分析555定时器、单稳态触发器和报警器电路。结果显示:555定时器的触发端为低电平时,输出端为高电平;触发端为高电平时,输出端为低电平。单稳态触发器的输出脉冲的宽度tW与电阻R、电容C的大小有关,调整R,C的数值,就可以改变输出方波的宽度。报警器电路中,左振荡器输出为低频振荡,右振荡器输出为高频、变频振荡。
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| 关 键 词： | 555定时器 输入输出波形 触发器 报警器 |
| 文章编号： | 1004-373X（2007）18-187-02 |
| 收稿时间： | 2007-03-10 |
| 修稿时间： | 2007-03-10 |
Automatic Design and Application of 555 Timer |
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| HUANG Ping,PEI Suhua.Automatic Design and Application of 555 Timer[J].Modern Electronic Technique,2007,30(18):187-188,192. |
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| Authors: | HUANG Ping PEI Suhua |
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| Affiliation: | College of Physics and Elect ronics, Shandong Normal University, Jinan, 250014, China |
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| Abstract: | By designing and analyzing 555 timer,monostable trigger and annunciator circuit by applying Multisim software.The results show that,the 555 timer output high-voltage when its trigger low-voltage,and it output low-voltage when its trigger high-voltage.The output pulse width tW of monostable trigger is relational with size of resistance R and capacitance C.Change with the variation of R and C.The left oscillator output low frequency and the right oscillator output high and change frequency in annunciator circuit. |
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| Keywords: | Multisim |
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