公开(公告)号：DE69317084T2

公开(公告)日：1998-09-17

申请号：DE69317084

申请日：1993-07-14

Applicant: IBM

Inventor： JOVE STEPHEN ALAN ,  KLAASSEN KLAAS BEREND ,  VAN PEPPEN JACOBUS CORNELIS LE

IPC: G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/11 ,  G11B5/39 ,  G11B5/40 ,  G11B5/55 ,  G11B19/02 ,  G11B19/04 ,  G11B23/50 ,  G11B33/00 ,  G11B33/14 ,  H03F3/04 ,  H03F3/195 ,  G11B20/24 ,  G01R33/06

Abstract: Low noise, low power, low voltage amplifier circuits with a single ended input having no common mode rejection for concurrently biasing and amplifying signals generated by magnetoresistive (MR) elements in a disk file. The amplifier circuits comprise a single (grounded) supply voltage source. One terminal of each MR element and the conductive substrate of each MR element and the conductive substrate of each disk in the disk file are grounded to minimize transient conductive asperity currents. The head/disk assembly of the disk file is completely enclosed by a highly conductive electrostatically shielded metallic enclosure that.. operates as a Faraday cage and isolates leads connecting the MR elements with the amplifier circuit from large, fast rise/fall time voltage transients.

公开(公告)号：DE69317185D1

公开(公告)日：1998-04-09

申请号：DE69317185

申请日：1993-09-16

Applicant: IBM

Inventor： CONTRERAS JOHN THOMAS ,  JOVE STEPHEN ALAN ,  KLAASSEN KLAAS BEREND ,  VAN PEPPEN JACOBUS CORNELIS LE

IPC: G01R33/09 ,  G11B5/00 ,  G11B5/02 ,  G11B33/12 ,  G01R33/06

公开(公告)号：DE69122326D1

公开(公告)日：1996-10-31

申请号：DE69122326

申请日：1991-07-15

Applicant: IBM

Inventor： KLAASSEN KLAAS BEREND ,  VAN PEPPEN JACOBUS CORNELIS LE

IPC: G11B21/21 ,  G11B5/41 ,  G11B5/455 ,  G11B5/60 ,  G11B19/04 ,  G11B20/18 ,  G11B27/36 ,  G11B5/02 ,  G11B20/00

公开(公告)号：DE3781471T2

公开(公告)日：1993-04-08

申请号：DE3781471

申请日：1987-06-16

Applicant: IBM

Inventor： JOVE STEPHEN ALAN ,  KLAASSEN KLAAS BEREND ,  NOMURA CALVIN SHIZUO ,  VAN PEPPEN JACOBUS CORNELIS LE

IPC: G01R33/09 ,  G11B5/00 ,  G11B5/02 ,  G01R33/06

公开(公告)号：DE3781471D1

公开(公告)日：1992-10-08

申请号：DE3781471

申请日：1987-06-16

Applicant: IBM

Inventor： JOVE STEPHEN ALAN ,  KLAASSEN KLAAS BEREND ,  NOMURA CALVIN SHIZUO ,  VAN PEPPEN JACOBUS CORNELIS LE

IPC: G01R33/09 ,  G11B5/00 ,  G11B5/02 ,  G01R33/06

公开(公告)号：NZ230171A

公开(公告)日：1991-12-23

申请号：NZ23017189

申请日：1989-08-01

Applicant: IBM

Inventor： JOVE STEPHEN ALAN ,  KLAASEN KLAAS BEREND ,  VAN PEPPEN JACOBUS CORNELIS LE

IPC: G06F11/00 ,  G11B20/18 ,  G11B20/22 ,  G11B20/24 ,  H03K5/00 ,  H03K5/08 ,  H04B1/10