Invention Application
US20110260826A1 FOUR-TERMINAL RESISTOR WITH FOUR RESISTORS AND ADJUSTABLE TEMPERATURE COEFFICIENT OF RESISTANCE 有权
具有四个电阻器和可调节温度系数的四端电阻

  • Patent Title: FOUR-TERMINAL RESISTOR WITH FOUR RESISTORS AND ADJUSTABLE TEMPERATURE COEFFICIENT OF RESISTANCE
  • Patent Title (中): 具有四个电阻器和可调节温度系数的四端电阻
  • Application No.: US13127838
    Application Date: 2009-08-11
  • Publication No.: US20110260826A1
    Publication Date: 2011-10-27
  • Inventor: Michael Belman
  • Applicant: Michael Belman
  • Applicant Address: US PA Malvern
  • Assignee: VISHAY INTERTECHNOLOGY, INC.
  • Current Assignee: VISHAY INTERTECHNOLOGY, INC.
  • Current Assignee Address: US PA Malvern
  • International Application: PCT/IL2009/000783 WO 20090811
  • Main IPC: H01C1/14
  • IPC: H01C1/14 H01C17/00
FOUR-TERMINAL RESISTOR WITH FOUR RESISTORS AND ADJUSTABLE TEMPERATURE COEFFICIENT OF RESISTANCE
Abstract:
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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