Dc-type voltage reset characteristics for soft magnetic cores at high frequencies

M. Yamaguchi, T. Tsuruta, S. Kikuchi, H. Matsuki, K. Murakami

Research output: Contribution to journalArticlepeer-review


dc-type voltage reset characteristics for amorphous ribbon, permalloy ribbon, sendust ribbon, and amorphous fiber were examined and compared with constant current reset characteristics (CMC) up to 500 kHz. A new instrument with square-wave driving is developed. We defined the control force by using the average value of control current when the control current flows forwardly with control voltage. An amorphous core with ribbon thickness of 5 μm exhibited highest gain among the cores. This clarified that the average value of reset magnetizing force for an amorphous core corresponds to the average speed of flux reset and that dc-type voltage reset characteristics for an amorphous ribbon are almost identical to CMC at high frequencies. These results are applicable for a detailed steady-state analysis of magnetic amplifiers.

Original languageEnglish
Pages (from-to)6038-6040
Number of pages3
JournalJournal of Applied Physics
Issue number10
Publication statusPublished - 1988

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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