Process-insensitive write current generation for a HDD preamplifier writer equipped with parallel output resistive damping
US7110204B2 · kind B2 · utility
0Cited by
22References
3Claims
0Family size
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Inventor
Key dates
| Filing date | Jul 22, 2004 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Jul 22, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/513
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention achieves technical advantages as an improved Parallel Damping scheme suitable for very-low-supply preamp operation. The improved Parallel Damping Scheme accurately generates a programmable Iw flowing through the write head while compensating for a leakage current path through a Parallel Damping resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.