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IEC 60440 Ed. 1.0 b:2012

Method of measurement of non-linearity in resistors
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IEC 60440 Ed. 1.0 b:2012

Method of measurement of non-linearity in resistors

PUBLISH DATE 2012
PAGES 38
IEC 60440 Ed. 1.0 b:2012

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:

  • change of the principle parameter's term from "third harmonic attenuation" to "third harmonic ratio";
  • addition of advice on the prescription of requirements in a relevant component specification;
  • addition of a set of recommended measuring conditions for a specimen with a rated dissipation of less than 100 mW;
  • a complete editorial revision.
SDO IEC: International Electrotechnical Commission
Document Number IEC 60440
Publication Date July 13, 2012
Language b - English & French
Page Count
Revision Level 1.0
Supercedes
Committee 40
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