555定时电路的原理及应用

The theory and applications of 555 timer circuit

555定时器是一种常用的双极型中规模集成电路,用它能够方便简单的实现定时、波形变换、自动报警。本文从元件结构、工作原理和典型工作模式三个方面介绍了555定时电路的使用方法。

555 timer is a common bipolar scale integrated circuit, we can use it to realize timing, waveform transformation and automatic alarm conveniently and Simply. This article describes the using of 555 timer circuit from device structure, working principle and typical operating mode.