A novel differential mode rejection network for conducted emissions diagnostics

Author

Nave, Mark J.

Author_Institution

EMC Services Inc., Seminole, FL, USA

fYear

1989

fDate

23-25 May 1989

Firstpage

223

Lastpage

227

Abstract

A differential mode rejection network (DMRN), a device which separates common mode noise from differential mode noise in a line impedance stabilization network (LISN)-based conducted emissions setup, is described. Although it is not a filter, its function is analogous to that of a filter. The DMRN filters out differential mode, and passes common mode unfiltered. The differential mode is attenuated by more than 50 dB, and the common mode noise is attenuated by less than 4 dB. Applications of the DMRN are discussed for filter design and troubleshooting, and electromagnetic interference source suppression is briefly described. Mathematical analysis and hardware implementation of the devices are explained

Keywords

electric impedance; electromagnetic interference; filters; interference suppression; EMI source suppression; common mode noise; conducted emissions diagnostics; conducted emissions setup; differential mode noise; differential mode rejection network; filter design; filter troubleshooting; hardware implementation; line impedance stabilization network; mathematical analysis; Area measurement; Capacitors; Delta modulation; Filtering; Inductance; Inductors; Magnetic separation; Noise measurement; Power filters; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1989., IEEE 1989 National Symposium on

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/NSEMC.1989.37184

Filename

37184