摘要
本文阐述了发动机数码显示转速表的电路设计及工作原理,它根据转速与点火脉冲频率的比例关系,将点火脉冲进行分离、拓宽和光电隔离,在频率计上显示当前发动机转速。
This article explains the circuit design and working theory of figure-showing tachometer of engine. It separates broadens and photoelectricity isolates the firing pulse according to proportional relationship of rotating speed and firing pulse frequency and the rotating speed is shown on frequency counter.
出处
《机电工程技术》
2005年第10期13-14,81,共3页
Mechanical & Electrical Engineering Technology
关键词
发动机
转速
点火脉冲
engine rotating speed firing pulse
