Head stack assembly (HSA) with shunt testing access port
US6472866B2 · kind B2 · utility
15Cited by
14References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Mar 11, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for testing the read/write head elements of a head stack assembly (“HSA”). A completed HSA is placed in the test apparatus. Test probes are aligned and placed in electrical contact with the electrical leads coming from each head element, between the head elements and the preamplifier. The HSA is then placed in a changing magnetic field. A low frequency magnetic field can be applied to test the head elements. The changing magnetic field induces electrical signals within the head elements. By analyzing these electrical signals, the condition and characteristics of the each head element can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.