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  • Making a chopper controller circuit   (Zammai Coverstory No. 10)
    Making a chopper controller circuit as a demonstration for children. Encouraging youngsters to be involved in science requires patient efforts.
    (Page published 14 Nov 1999, last updated 4 Oct 2002)
  • Japanese technology sector in danger of losing its superiority   (Zammai Coverstory No. 7)
    The technical lead that Japan is said to have is already threatened by other countries. It is irresponsible to talk of things based on optimistic views that Japan still retains its position.
    (Page published 11 Oct 1999, last updated 3 Oct 2002)

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