System and method for improving frequency response in a magneto-resistive preamplifier
US6538833B2 · kind B2 · utility
10Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Jan 24, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A preamplifier system includes an amplifier stage having at least one feedback network. The feedback network has a feedback resistance that may be adjusted to improve a frequency response of the preamplifier. A feedback control system is operative to set the resistance of the feedback network as a function of a resistance value of an associated read/write head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.