公开(公告)号：EP2474008A4

公开(公告)日：2018-03-28

申请号：EP10814475

申请日：2010-09-02

申请人： VISHAY DALE ELECTRONICS INC

发明人： SMITH CLARK L ,  BERTSCH THOMAS L ,  WYATT TODD L ,  VEIK THOMAS

IPC分类号： H01C7/06 ,  G01R1/20 ,  G01R19/00 ,  G01R19/32 ,  H01C1/00 ,  H01C1/148 ,  H01C17/232 ,  H01C17/28

CPC分类号： H01C7/06 ,  G01R1/203 ,  G01R19/0092 ,  G01R19/32 ,  H01C1/00 ,  H01C1/148 ,  H01C17/232 ,  H01C17/28 ,  Y10T29/49082 ,  Y10T29/49101

摘要： A current sense resistor and a method of manufacturing a current sensing resistor with temperature coefficient of resistance (TCR) compensation is disclosed. The resistor has a resistive strip disposed between two conductive strips. A pair of main terminals and a pair of voltage sense terminals are formed in the conductive strips. A pair of rough TCR calibration slots are located between the main terminals and the voltage sense terminals, each of the rough TCR calibration slots have a depth selected to obtain a negative starting TCR value observed at the voltage sense terminals. A fine TCR calibration slot is formed between the pair of voltage sense terminals. The fine TCR calibration slot has a depth selected to obtain a TCR value observed at the voltage sense terminals that approaches zero. The resistor can also have a resistance calibration slot located between the pair of main terminals. The resistance calibration slot has a depth selected to calibrate a resistance value of the resistor.