与频率无关的压控精密相移器  

A PRECISION VOLTAGE CONTROLLED PHASE SHIFTER WHICH DOES NOT DEPEND ON FREQUENCY

作　　者：宋树贵[1] 贾香鸾[1] 秦世才 

机构地区：[1]南开大学电子科学系

出　　处：《南开大学学报（自然科学版）》1996年第1期46-49,共4页Acta Scientiarum Naturalium Universitatis Nankaiensis

摘　　要：本文提出了一种压控精密相移器．设定相移的调整范围从１４°～１６０°连续可调．在４５Ｈｚ～６０Ｈｚ的频率范围内相移变化小于０．５°，该电路输入信号电压范围是１４０ｍＶ～５Ｖ，它已成功的用于电力系统的测量仪表中，本文介绍了电路工作原理，电路结构和实验结果．This paper introduces a precision voltage controlled phase shifter with shift range of 14-160 degrees, and the input range is 140mV-5V. For a given control voltage, the phase shift error is less than 0. 5 degree when the frequency changes from 45Hi to 60Hz. This kind of devices has already been used in power system successfully. This paper describes its operational principle, circuit structure and experiment results.

关 键 词：无功功率表 相移器 压控相移器 频率 功率表 

分 类 号：TM935.2[电气工程—电力电子与电力传动] 933.312