Implementing enhanced ESD prevention for hard disk drives using spin-torque oscillator (STO)
US8797693B1 · kind B1 · utility
13Cited by
5References
20Claims
0Family size
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Key dates
| Filing date | Aug 26, 2013 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Aug 26, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus, and system are provided for preventing electrostatic discharge (ESD) in hard disk drives using spin-torque oscillator (STO) for microwave assisted magnetic recording (MAMR). A control circuit adjusts a disk electrical potential with an electrical potential of a spin-torque oscillator (STO) element. The control circuit maintains a potential difference of less than about 115 millivolts (mV) between the disk and the STO element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.