BS EN 60440:2012
$102.76
Method of measurement of non-linearity in resistors
| Published By | Publication Date | Number of Pages |
| BSI | 2012 | 20 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 8 | 4 Method of measurement 4.1 Measurement principle Figures Figure 1 – Equivalent circuit at the fundamental frequency |
| 9 | Figure 2 – Equivalent circuit at the third harmonic frequency |
| 10 | 4.2 Measuring circuit Figure 3 – Corrective term Δ |
| 11 | 4.3 Measurement system requirements 4.3.1 Measuring frequency 4.3.2 Noise level of the measuring system 4.3.3 Third harmonic ratio of the measuring system 4.3.4 Power amplifier Figure 4 – Block schematic of a suitable measuring system |
| 12 | 4.3.5 Voltmeter 4.3.6 Filter 4.3.7 Test fixture 4.4 Verification of the measuring system 5 Measurement procedure 5.1 Environmental conditions 5.2 Preparation of specimen 5.3 Measurement conditions |
| 13 | 5.4 Procedure 5.5 Precautions 6 Evaluation of measurement results 6.1 Evaluation |
| 14 | 6.2 Requirements 7 Information to be given in the relevant component specification |
| 15 | Table 1 – Recommended measuring conditions (1 of 2) |
| 17 | Annex A (informative) Reference to IEC/TR 60440 |
| 18 | Bibliography |
