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7 条记录 (耗时 0.061 秒)

    Apparatus and method for controlling common mode voltage of a disk drive write head
    2.
    发明授权
    Apparatus and method for controlling common mode voltage of a disk drive write head 有权
    用于控制磁盘驱动器写头的共模电压的装置和方法

    公开(公告)号：US07701654B2

    公开(公告)日：2010-04-20

    申请号：US11521568

    申请日：2006-09-14

    申请人： Jason A. Christianson ,  David W. Kelly ,  Michael John O'Brien ,  Cameron Carroll Rabe

    发明人： Jason A. Christianson ,  David W. Kelly ,  Michael John O'Brien ,  Cameron Carroll Rabe

    IPC分类号： G11B5/09

    CPC分类号： G11B5/09 ,  H03F3/45475 ,  H03F3/45928 ,  H03F2203/45212 ,  H03F2203/45626 ,  H03F2203/45681

    摘要： An apparatus and method for controlling the common mode voltage across a data storage device write head. The write current is supplied by a first plurality of parallel current sources each independently activated to limit the common mode voltage generated across the write head. A plurality of parallel resistive elements responsive to current supplied by a second plurality of parallel current sources bias an output transistor that further controls the write current. Each of the plurality of parallel resistive elements and each of the second plurality of parallel current sources is also independently activated to limiting the common mode voltage generated across the write head.

    摘要翻译： 一种用于控制跨数据存储设备写头的共模电压的装置和方法。 写入电流由第一多个并联电流源提供，每个并行电流源各自独立地被激活以限制在写入头上产生的共模电压。 响应于由第二多个并联电流源提供的电流的多个并联电阻元件偏置进一步控制写入电流的输出晶体管。 多个并联电阻元件和第二多个并联电流源中的每一个也被独立地激活以限制在写入头上产生的共模电压。

    Method and apparatus for protecting magnetoresistive heads from electrostatic discharge
    6.
    发明授权
    Method and apparatus for protecting magnetoresistive heads from electrostatic discharge 有权
    用于保护磁阻头免受静电放电的方法和装置

    公开(公告)号：US07502207B2

    公开(公告)日：2009-03-10

    申请号：US11099214

    申请日：2005-04-05

    申请人： Jason A. Christianson ,  Michael John O'Brien ,  Cameron Carroll Rabe ,  Carl F. Elliott

    发明人： Jason A. Christianson ,  Michael John O'Brien ,  Cameron Carroll Rabe ,  Carl F. Elliott

    IPC分类号： G11B5/127 ,  G11B5/55

    CPC分类号： G11B5/40

    摘要： An apparatus and method for providing electrostatic discharge protection for a disc drive read head. A pair of depletion mode MOSFETS, and a fuse associated with each are disposed between the read head output terminals. The MOSFETS are controlled to an “off” state for testing the preamplifier prior to assembly of the read head. After assembly of the head, a second pair of MOSFETS is gated to an “on” state to open the fuses and thus permit normal operation of the read head.

    摘要翻译： 一种用于为盘驱动读头提供静电放电保护的装置和方法。 一对耗尽型MOSFETS和与之相关联的熔丝设置在读出头输出端子之间。 在组装读取头之前，将MOSFETS控制为“关闭”状态以测试前置放大器。 在头部组装之后，第二对MOSFETS被选通到“导通”状态以打开保险丝，从而允许读取头的正常操作。