Invention Application
- 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
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Application No.: US13127838Application Date: 2009-08-11
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Publication No.: US20110260826A1Publication 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

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.
Public/Granted literature
- US08581687B2 Four-terminal resistor with four resistors and adjustable temperature coefficient of resistance Public/Granted day:2013-11-12
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