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。
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 con- trolled by singlechip,the intelligent tuning of resonance frequency is realized.
出处
《国外电子元器件》
2006年第7期41-44,共4页
International Electronic Elements
关键词
失真度
智能调谐
文氏电桥
陷波滤波器
degree of distortion
intelligent tuning
Wien bridge
trap filter
