DocumentCode
3433373
Title
Non-intrinsic differential mode noise caused by ground current in an off-line power supply
Author
Zhang, Dongbing ; Chen, Dan ; Sable, Dan
Author_Institution
Power Electron. Center, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Volume
2
fYear
1998
fDate
17-22 May 1998
Firstpage
1131
Abstract
Nonintrinsic differential-mode (DM) noise caused by ground current is common in switch-mode power supplies, but the phenomenon is first uncovered and reported in this paper. Using the zero-span mode of a spectrum analyzer allows one to investigate this mode of noise. It is found that this mode of noise is a voltage-generated noise, caused by the unbalance of the circuit. Understanding the phenomenon makes the EMI diagnosis and filter design less of a “black magic”
Keywords
earthing; electromagnetic interference; spectral analysers; switched mode power supplies; EMI diagnosis; nonintrinsic differential-mode noise; spectrum analyzer; switch-mode power supplies; voltage-generated noise; zero-span mode; Attenuation; Capacitors; Circuit noise; Delta modulation; Electromagnetic interference; Filters; Frequency; Power supplies; Rectifiers; Spectral analysis;
fLanguage
English
Publisher
ieee
Conference_Titel
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location
Fukuoka
ISSN
0275-9306
Print_ISBN
0-7803-4489-8
Type
conf
DOI
10.1109/PESC.1998.703146
Filename
703146
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