Flexible biasing strategy for ground-split tcr sensors
US-2015162022-A1 · Jun 11, 2015 · US
Apparatus and method for setting slider surface potential
US9558773B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9558773-B2 |
| Application number | US-201414560253-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 4, 2014 |
| Priority date | Dec 4, 2014 |
| Publication date | Jan 31, 2017 |
| Grant date | Jan 31, 2017 |
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- Title
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Abstract
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An apparatus includes a slider body of a disk drive. The slider body is electrically coupled to a plurality of end bond pads. A voltage applied to one more of the end bond pads sets a surface potential of the slider body.
First claim
Opening claim text (preview).
The invention claimed is: 1. An apparatus, comprising: a slider body comprising a plurality of end bond pads and a conductive portion; a sensor having a temperature coefficient of resistance coupled to a first end bond pad and a second end bond pad, the sensor configured for sensing in response to a differential voltage across the first and second end bond pads, and the sensor configured to set a surface potential of the conductive portion of the slider body in response to a common mode voltage applied to the first and second end bond pads, wherein the sensor comprises a first end coupled to the first end bond pad and a second end coupled to the second end bond pad; a first resistor coupled between the first end of the sensor and the conductive portion of the slider body; and a second resistor coupled between the second end of the sensor and the conductive portion of the slider body. 2. The apparatus of claim 1 , wherein the sensor comprises a dual-ended temperature coefficient of resistance (DETCR) sensor. 3. The apparatus of claim 2 , wherein the DETCR sensor is connected to ground. 4. The apparatus of claim 1 , wherein the sensor comprises a laser power monitor. 5. The apparatus of claim 1 , further comprising: a third resistor having a first end coupled to ground and a second end coupled to the conductive portion of the slider body; wherein the first and second resistors are coupled to the second end of the third resistor. 6. The apparatus of claim 1 , wherein the slider body is configured for heat-assisted magnetic recording. 7. An apparatus, comprising: a slider body comprising a plurality of end bond pads and a conductive portion; a sensor having a temperature coefficient of resistance coupled to a first end bond pad and a second end bond pad, the sensor configured for sensing in a first mode and to set a surface potential of the conductive portion of the slider body in a second mode, wherein the sensor comprises a first end coupled to the first end bond pad and a second end coupled to the second end bond pad; a first resistor coupled between the first end of the sensor and the conductive portion of the slider body; and a second resistor coupled between the second end of the sensor and the conductive portion of the slider body, wherein the first mode is activated in response to a first voltage state of the first and second end bond pads, and the second mode is activated in response to a second voltage state of the first and second end bond pads. 8. The apparatus of claim 7 , wherein the first voltage state is a differential voltage state, and the second voltage state is a common mode voltage state. 9. The apparatus of claim 7 , wherein the sensor comprises a dual-ended temperature coefficient of resistance (DETCR) sensor. 10. The apparatus of claim 9 , wherein the DETCR sensor is connected to ground. 11. The apparatus of claim 7 , wherein the sensor comprises a laser power monitor. 12. The apparatus of claim 7 , further comprising: a third resistor having a first end coupled to ground and a second end coupled to the conductive portion of the slider body; wherein the first and second resistors are coupled to the second end of the third resistor. 13. The apparatus of claim 7 , wherein the slider body is configured for heat-assisted magnetic recording.
Assignees
Inventors
Classifications
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Frequently asked questions
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- What does patent US9558773B2 cover?
- An apparatus includes a slider body of a disk drive. The slider body is electrically coupled to a plurality of end bond pads. A voltage applied to one more of the end bond pads sets a surface potential of the slider body.
- Who is the assignee on this patent?
- Seagate Technology Llc
- What technology area does this patent fall under?
- Primary CPC classification G11B5/607. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 31 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).