摘要
555定时器是一种模拟和数字功能相结合的中规模集成器件,外形为双列直插8脚结构,体积小,价格低,使用方便。只要在外部配上适当的阻容元件,就可以构成史密特触发器、单稳态触发器及自激多谐振荡器等脉冲信号产生与变换电路。它经常作为定时器广泛应用于仪器仪表、家用电器、电子测量及自动控制等方面。
The 555 timer is a middle size integrated device with combination of analog and digital functions.Its shape is DIP 8-pin structure,has small size and low price,and it is easy to use.As long as coupled with the appropriate RC components in outside,can it constitute a Schmitt trigger,monostable flip-flop and self-excited multivibrator and other pulse signal generation and conversion circuits.It is widely used as a timer in instrumentation,home appliances,electronic measurement and automatic control and so on.
出处
《价值工程》
2011年第22期53-54,共2页
Value Engineering
