公开(公告)号：AU3144977A

公开(公告)日：1979-06-21

申请号：AU3144977

申请日：1977-12-12

Applicant: IBM

Inventor： HOSKINS PHILLIP KEITH ,  JOHNSON HARMON WESLEY

IPC: B41J2/125 ,  B41J2/13 ,  B41J19/20 ,  B41J29/38 ,  B41J3/04

公开(公告)号：DE2337928A1

公开(公告)日：1974-03-07

申请号：DE2337928

申请日：1973-07-26

Applicant: IBM

Inventor： JOHNSON HARMON WESLEY

IPC: G11B5/09 ,  H03K17/64 ,  H03K17/66 ,  G11B5/44

Abstract: A drive circuit has two circuit paths, each path including an inductive coil means to which a constant current source is applied; and a switching element that clamps the coil means to a fixed voltage.