Implementing enhanced ESD prevention for hard disk drives using spin-torque oscillator (STO)
AssigneeHGST Netherlands B.V.
InventorsMasaru Furukawa, Junguo Xu, Makoto Satou, Kenji Suzuki
Life of this patent
Estimating the term…
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.
Claims20
A method for preventing electrostatic discharge (ESD) in hard disk drives using spin-torque oscillator (STO) comprising:
- providing control circuitry for adjusting a disk electrical potential with an electrical potential of a spin-torque oscillator (STO) element;
- and
- said control circuitry maintaining a potential difference of less than about 115 millivolts (mV) between a disk and the STO element.
An apparatus for preventing electrostatic discharge (ESD) in hard disk drives using spin-torque oscillator (STO) comprising:
- control circuitry for adjusting a disk electrical potential with an electrical potential of a spin-torque oscillator (STO) element;
- and
- said control circuitry maintaining a potential difference of less than about 115 millivolts (mV) between the disk and the STO element.
A system for preventing electrostatic discharge (ESD) in hard disk drives using spin-torque oscillator (STO) comprising:
- at least one disk for storing data;
- a slider including a spin-torque oscillator (STO) element;
- said spin-torque oscillator (STO) element coupled between a first STO electrode and a second STO electrode;
- control circuitry for adjusting a disk electrical potential with an electrical potential of a spin-torque oscillator (STO) element;
- and
- said control circuitry maintaining a potential difference of less than about 115 millivolts (mV) between the disk and the STO element.
Dependencies are inferred from the claim text.