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Method of measurement of non-linearity in resistors
Method of Measurement of Non-linearity in Resistors
This method involves applying a varying voltage across the resistor and measuring the resulting current to determine if the resistance remains constant.
Any deviation from a linear V-I (voltage-current) characteristic indicates non-linearity.
Typically, a set of different voltage levels are applied, and the corresponding currents are recorded.
The data is plotted on a graph with voltage on the x-axis and current on the y-axis.
Ideal resistors produce a straight line, while curved graphs signify non-linear behavior.
A quantitative measure of non-linearity can be calculated by comparing the measured resistance at various points to a reference resistance value.
IEC 60440:2012 specifies a method of measurement and associated test conditions to assess the magnitude of non-linear distortion generated in a resistor.
This method is applied if prescribed by a relevant component specification, or if agreed between a customer and a manufacturer.
This International Standard cancels and replaces the Technical Report IEC/TR 60440, published in 1973.
The major changes with regard to the Technical Report are:
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