摘要
介绍一种能够测量交流电压、交流电流、工频频率以及电压与电压之间、电流与电流之间、电压与电流之间的相位的数字式钳型仪表。较详细地分析了相位测量电路、频率测量电路和直流—直流电源变换电路的工作原理 。
This paper introduces a digital phase VA meter with two current sensor that can measure AC voltage/current? frequency and phaes between voltang to valtage? current to current and voltang to current. The principle of phase/frequency measurement circuit and DC to DC converter are analyzed in details. The application is introduced.
出处
《仪表技术》
2003年第2期15-17,共3页
Instrumentation Technology
