Measurement on electromagnetic noise and change of surface in arcing electric contacts

Yasuo Ebara, Toshiaki Koizumi, Hideaki Sone, Yoshiaki Nemoto

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


The authors have observed the relationship between waveform of electromagnetic noise and change of surface for opening Ag-Pd electric contacts. In case of Ag-Pd electrodes, continuous noise is observed in the whole period of arc discharge in both current polarities. Fluctuations of arc voltage and noise are large in the middle part of arc discharge duration. The noise has a tendency to decrease in the later half. The authors proposed that noise waveforms and changes of electrode surface at various circuit conditions are classified into three categories. As these results, the authors showed the correlation between pattern of noise waveform and the change of electrode surface.

Original languageEnglish
Pages (from-to)17-23
Number of pages7
JournalElectrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts
Publication statusPublished - 1999
EventProceedings of the 1999 45th IEEE HOLM Conference on Electrical Contacts - Pittsburgh, PA, USA
Duration: 1999 Oct 41999 Oct 6


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