Shunt Resistor Electrode Slit for Stable Resistance Sensing

The electrode member is designed with a slit at a specific location (contact portion) to create a localized equipotential region. This local structural modification ensures that the potential distribution is uniform in the wiring connection area, allowing voltage detection wiring to be connected at consistent potential points regardless of exact connection position, thereby eliminating characteristics variation while maintaining measurement precision.

The slit in the electrode member creates an equipotential line that extends in the width direction. By positioning the voltage detection wiring to connect at this equipotential line, the invention ensures that potential differences remain constant even when connection positions vary slightly, thus preventing T.C.R. and resistance value variations while maintaining accurate measurement.

The electrode member is segmented by introducing a slit that divides the contact portion into distinct regions. This segmentation creates a controlled equipotential line without requiring additional components or complex structures. The slit is simply a discontinuity in the electrode material that can be easily manufactured, achieving potential stabilization with minimal structural complexity.

The invention changes the geometric parameter of the electrode member by adding a slit with specific dimensions and positioning. This parameter modification (adding a narrow discontinuity) fundamentally alters the potential distribution characteristics to create equipotential lines, achieving reliability improvement with minimal impact on overall device complexity since the slit is a simple geometric feature.