Simultaneous measurement of contact potential and slider body clearance in a magnetic disk drive
US7310197B2 · kind B2 · utility
33Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2005 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Jun 15, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6017
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for simultaneously measuring contact potential and slider body clearance in a hard disk drive. In embodiments of the present invention, a plurality of direct current (DC) pulses are applied between a slider body and a hard disk of a magnetic disk drive. The contact potential voltage between the slider body and the hard disk is determined in response to applying the plurality of direct current (DC) pulses. The voltage of the plurality of direct current (DC) pulses is increased until a contact between the slider body and the hard disk is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.