Characterisation of electromagnetic interference from LED. Issue 2 (1st January 2016)

• Record Type: Journal Article
• Authors: Wan, Fayu; Cao, Huixia; An, Sushen; Feng, Chaochao; Hu, Guang; Ge, Junxiang
• Is Part Of: Electronics letters. Volume 52:Issue 2(2016)
• Page Start: 143
• Page End: 144
• Publication Date: 2016-01-01
• Subjects: electromagnetic interference -- light emitting diodes -- anechoic chambers (electromagnetic) -- electromagnetic compatibility; electromagnetic interference -- LED -- EMI -- electromagnetic compatibility anechoic chamber -- time‐domain measurement -- semiconductor energy bandgap; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.3358
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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.