Open AccessCharacterisation of electromagnetic interference from LED
Author(s) -
Wan Fayu,
Cao Huixia,
An Sushen,
Feng Chaochao,
Hu Guang,
Ge Junxiang
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.3358
Subject(s) - emi , electromagnetic interference , light emitting diode , electromagnetic compatibility , anechoic chamber , interference (communication) , conducted electromagnetic interference , led lamp , electromagnetism , optoelectronics , materials science , electrical engineering , acoustics , optics , electronic engineering , physics , engineering , channel (broadcasting) , quantum mechanics
The electromagnetic interference (EMI) caused by alternating current driven LEDs which are widely used as indicator lamps in power strip is presented. The frequency‐domain measurement results show that the EMI will violate the MIL‐461E/RE102 standard limit line in the electromagnetic compatibility anechoic chamber. The time‐domain measurement results show that the breakdown of LEDs suddenly increase the current causing the interference. The colour light of LED is determined by the energy bandgap of the semiconductor, as they may influence the EMI level, red and yellow LEDs are analysed.