发明申请
- 专利标题: FOUR-TERMINAL RESISTOR WITH FOUR RESISTORS AND ADJUSTABLE TEMPERATURE COEFFICIENT OF RESISTANCE
- 专利标题(中): 具有四个电阻器和可调节温度系数的四端电阻
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申请号: US13127838申请日: 2009-08-11
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公开(公告)号: US20110260826A1公开(公告)日: 2011-10-27
- 发明人: Michael Belman
- 申请人: Michael Belman
- 申请人地址: US PA Malvern
- 专利权人: VISHAY INTERTECHNOLOGY, INC.
- 当前专利权人: VISHAY INTERTECHNOLOGY, INC.
- 当前专利权人地址: US PA Malvern
- 国际申请: PCT/IL2009/000783 WO 20090811
- 主分类号: H01C1/14
- IPC分类号: H01C1/14 ; H01C17/00
摘要:
Thermally stable four-terminal resistor (current sensor) is characterized by having the capacity to adjust both resistance and temperature coefficient of resistance (TCR), during manufacturing process. The four-terminal resistor includes 3 or 4 elementary resistors R1-R3 forming a closed loop. Resistor R1 is the principal low-ohmic value resistor. The terminals of resistor R1 serve as “Force” terminals of the four-terminal resistor. Resistors R2, R3 form a voltage divider intended to minimize the TCR of the four-terminal resistor and connected in parallel to resistor R1. The terminals of resistor R3 serve as “Sense” terminals of the four-terminal resistor. Resistor R2 may be split into two resistors: R2a, R2b to simplify the implementation of four-terminal resistor. Elementary resistors R1, R2 must have the same sign of TCR. Target resistance and TCR minimization in four-terminal resistor are reached by adjustment of resistance of the elementary resistors.
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