Invention Grant
US09564163B2 Implementing dual partially independent thermal flyheight control (TFC) for hard disk drives
有权
为硬盘驱动器实现双重部分独立的热电高度控制（TFC）
- Patent Title: Implementing dual partially independent thermal flyheight control (TFC) for hard disk drives
- Patent Title (中): 为硬盘驱动器实现双重部分独立的热电高度控制（TFC）
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Application No.: US14678906Application Date: 2015-04-03
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Publication No.: US09564163B2Publication Date: 2017-02-07
- Inventor: John Contreras , Ian Robson McFadyen , Erhard Schreck
- Applicant: HGST Netherlands B.V.
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Agent Joan Pennington
- Main IPC: G11B5/60
- IPC: G11B5/60
Abstract:
A method, apparatus, and system are provided for implementing dual partially independent flyheight control (TFC) for hard disk drives (HDDs). A dual thermal flyheight control (TFC) includes a series connected first heater resistor and a second heater resistor connected between a pair of wires. A capacitor is connected in parallel with the first heater resistor providing a frequency dependent shunt to the parallel connected first heater resistor. TFC electrical bias signals are applied to the first heater resistor and second heater resistor carried by the pair of wires. For example, the TFC electrical bias signals include high frequency electrical signals including a frequency range between 1 MHz and 100 MHz having a set amplitude in a voltage range between 0 and 7 Volts, and/or DC current signal.
Public/Granted literature
- US20160293194A1 IMPLEMENTING DUAL PARTIALLY INDEPENDENT THERMAL FLYHEIGHT CONTROL (TFC) FOR HARD DISK DRIVES Public/Granted day:2016-10-06
Information query
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