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我队仪修室研制的用于交流电法勘探的PC-G-78型变频测深仪,供电机主体部分为多频点可控硅逆变器,接收机实质上是一台高灵敏度选频微伏表。本文专门介绍接收机的锁相环部分。
The PC-G-78 frequency conversion depth sounder developed by our team’s workshop for AC method is mainly used for multi-frequency SCR inverter. The receiver is essentially a high-sensitivity frequency-selective Micro-volt meter. This article focuses on the PLL part of the receiver.