发明名称 Compensation circuit for the phase shift in electric meters for direct connection
摘要 The invention relates to a compensation circuit for the phase shift between a first input (3) for a voltage determination and a second input (4) for a current determination in electric meters for direct connection, whereby a DC-tolerant converter (5), for current transformation, is arranged before said second input (4) and a high pass filter (R1, C) is arranged before the first input (3), for a first equalisation of the non-frequency-dependant phase compensation. A further equalisation of the phase compensation occurs by means of a correction device (5) in a measuring chip (2), which is connected in series with the inputs (3, 4) for voltage determination and current determination.
申请公布号 US2004085786(A1) 申请公布日期 2004.05.06
申请号 US20030470461 申请日期 2003.07.29
申请人 DE VRIES JACOB;ULRICH ADRIAN 发明人 DE VRIES JACOB;ULRICH ADRIAN
分类号 G01R21/00;G01R21/133;(IPC1-7):H02J1/02 主分类号 G01R21/00
代理机构 代理人
主权项
地址