【摘要】 介绍文氏电桥陷波器及其在失真度测量中的应用,提出一种智能化数控调谐的文氏电桥陷波电路。该电路利用AD536型真有效值检波器对文氏电桥陷波后的残余信号进行检测并进行模-数转换,由单片机控制文氏电桥的分档电容器和数控电位器,实现谐振频率的智能调谐。更多还原

【Abstract】 The wien bridge trap filter and its application in the distortion measurement are introduced,the kind of intelligent numerical control tuning Wien bridge trap filter circuit is proposed.The circuit uses the true RMS-to-DC converter AD536 to detect the residual signal which traped by Wien bridge trap filter and converts it to digital signal.The range capacitance and digital potentiometers are controlled by singlechip,the intelligent tuning of resonance frequency is realized.更多还原