【摘要】 本文根据两同频同幅方波电压信号之间相位误差脉冲电压的平均值与二者相位误差成线性关系的原理,设计成以或非门实现压控振荡,以R—S触发器,RC微分电路实现相位比较,以两支三级管实现脉宽鉴别,构成开关量形式的锁相环,并以波形分析说明该电路的工作原理和同步跟踪范围的确定,尽而克服了模拟电路锁相环相位误差电压同相位误差之间成非线性关系的缺点。更多还原

【Abstract】 It is a linear relationship that the relationship between the average value ofpulse voltage for phase error and the phase error of two square wave voltage signal which have same fraguence and same amplituole In this paper, we designed a new circuit of phase lock loop according to this principle, Using a or gate to build the Voltage-controlled oscilator, a R-S flip-flopor and a RC differentiating circuit at the phase comparator, two transistors for pulse widtn discrimantor, we built a phase lock loop in switch circuit formThis paper analysed the principle on which this circuit workes and the rangeof sychronism tracing so this circuit overcomei the defect of Non-linear inanalog circuit更多还原