IEC 61047:2004

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General notes on tests
5 Classification
   5.1 Classification according to the load
   5.2 Classification according to output voltage
6 Marking
   6.1 Mandatory marking
   6.2 Optional marking
7 Output voltage and current
   7.1 Open-circuit voltage
   7.2 Voltage during operation
   7.3 Voltage surges during switching and operation
   7.4 Voltage waveform
   7.5 Inrush current
8 Total circuit power
9 Circuit power factor
10 Supply current
11 Impedance at audio-frequencies
12 Operational tests for abnormal conditions
13 Endurance
Annex A (normative) Tests
Annex B (informative) A guide to quoting product life and
                      failure rate
Bibliography

This International Standard specifies performance requirements for electronic step-down convertors for use on d.c. supplies up to 250 V and a.c. supplies up to 1 000 V at 50 Hz or 60 Hz with operating frequencies deviating from the supply frequency, associated with tungsten halogen lamps as specified in IEC 60357 and other filament lamps.