CN104113297B - 低通滤波器单元、结构和锁相放大器 - Google Patents
低通滤波器单元、结构和锁相放大器 Download PDFInfo
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CN101495043A (zh) * | 2005-10-14 | 2009-07-29 | 奥林巴斯Ndt公司 | 利用具有4x内插器的可调数字滤波器的超声波检测测量系统 |
CN102868163A (zh) * | 2012-09-10 | 2013-01-09 | 西安奥特迅电力电子技术有限公司 | 一种自适应并网变流器三相软锁相环 |
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CN101495043A (zh) * | 2005-10-14 | 2009-07-29 | 奥林巴斯Ndt公司 | 利用具有4x内插器的可调数字滤波器的超声波检测测量系统 |
CN102868163A (zh) * | 2012-09-10 | 2013-01-09 | 西安奥特迅电力电子技术有限公司 | 一种自适应并网变流器三相软锁相环 |
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