【摘要】 介绍了锁相环及其频率合成的基本原理,在此基础上,给出了集成锁相环电路CD4046的使用方法,并用该器件设计了频率合成电路。基本实验表明,此电路可以产生频率范围和间隔可变的高稳定度的精确离散信号,具有很大的实用价值。更多还原

【Abstract】 The fundamental principle of phase-locked loop and its frequency synthesis are introduced,on this basis the use method of integrated phase-locked loop circuit CD4046 is given,and the frequency synthesis circuit is designed using this device.Experiments show that the circuit can produce high reliable accurate discrete signal that has variable frequency range and interval,so has rather large practical value.更多还原