Design and analysis of noise-reduction transformer based on equivalent circuit

Toshiaki Yanada, Shintaro Minowa, Osamu Ichinokura, Shinki Kikuchi

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The present paper deals with the analysis of noise-reduction transformer that has a filter function for conductive noise transmission. A simple structured prototype transformer utilizing C-cores is prepared. To determine an optimum design for the noise-reduction transformer, noise attenuation of this transformer is discussed based on the equivalent circuit analysis. The analysis gives a quantitative relation between the circuit parameters and the noise attenuation. High performance noise-reduction transformer that has noise attenuation of -80 dB for a power supply unit of digital devices is developed.

Original languageEnglish
Pages (from-to)1351-1353
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number4 PART 1
Publication statusPublished - 1998


  • Conductive noise
  • EMC
  • EMI
  • Noise attenuation
  • Transformer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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