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    • 8. 发明申请
    • DC/DC converter
    • DC / DC转换器
    • US20050024033A1
    • 2005-02-03
    • US10897026
    • 2004-07-23
    • Kenichi Nakata
    • Kenichi Nakata
    • H02M3/155G05F1/40
    • H02M1/36Y10S323/901
    • The present invention provides a DC/DC converter that can include a capacitor constituting a soft start circuit in a semiconductor integrated device. This DC/DC converter is comprised of a switching element for supplying power from a power supply (Vcc) to a load side output terminal (OUT) by switching, an error amplifier for amplifying the voltage from the load side output terminal (OUT), a differentiation circuit for differentiating the voltage from the load side output terminal (OUT) and adjusting the output current according to the value thereof, a soft start circuit comprising a constant current source and a capacitor, both of which are connected to the output terminal of the differentiation circuit, and a comparator for comparing the triangular wave voltage from a triangular wave generator (TRI) with the voltage from the soft start circuit or the output voltage of the error amplifier, and controlling the switching of the switching element according to the comparison output thereof.
    • 本发明提供一种DC / DC转换器,其可以包括构成半导体集成器件中的软启动电路的电容器。 该DC / DC转换器包括用于通过切换从电源(Vcc)向负载侧输出端(OUT)供电的开关元件,用于放大来自负载侧输出端(OUT)的电压的误差放大器, 微分电路,用于根据负载侧输出端子(OUT)对电压进行微分,并根据其值调节输出电流;软启动电路,包括恒流源和电容器,两者均连接到 微分电路和用于将来自三角波发生器(TRI)的三角波电压与来自软启动电路的电压或误差放大器的输出电压进行比较的比较器,以及根据比较来控制开关元件的切换 输出。
    • 10. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US6159594A
    • 2000-12-12
    • US161988
    • 1998-09-29
    • Kousaku TamariTakanori DoiYasuo KakiharaKenichi Nakata
    • Kousaku TamariTakanori DoiYasuo KakiharaKenichi Nakata
    • G11B5/64G11B5/65G11B5/66G11B5/73G11B5/738H01F10/16
    • G11B5/7325G11B5/66Y10S428/90Y10T428/26Y10T428/265
    • A magnetic recording medium of the present invention comprises:a substrate;a nickel oxide underlayer formed on said substrate; anda cobalt-containing maghemite thin film formed on said nickel oxide underlayer, having either a spacing of a (311) plane of not more than 2.510 .ANG., a spacing of a (222) plane of not more than 2.415 .ANG. or a spacing of a (220) plane of not more than 2.950 .ANG., and having the ratio of either of X-ray diffraction spectrum peak intensities of the (311), (222) or (220) planes of said cobalt-containing maghemite thin film to an X-ray diffraction spectrum peak intensity of the (400) plane of more than 0.5:1.Such a magnetic recording medium has a higher coercive force, a higher saturation magnetization, less amount of noise generated, a large output in a high recording frequency region and less distortion of a reproduced waveform, and is suitable for use in current magnetic recording systems in which a ring-type magnetic write head is used.
    • 本发明的磁记录介质包括:基板; 形成在所述基板上的氧化镍底层; 以及形成在所述氧化镍底层上的含有钴的磁赤铁矿薄膜,其间隔为(311)面不大于2.510安培,(222)面间距不大于2.415安培或间距 (220)面不超过2.950,并且所述含钴磁赤铁矿薄膜的(311),(222)或(220)面的X射线衍射光谱峰值强度与 (400)面的X射线衍射谱峰强度大于0.5:1。 这种磁记录介质具有较高的矫顽力,较高的饱和磁化强度,较少的噪声产生量,高记录频率区域的输出较大,再生波形失真较少,适用于目前的磁记录系统 使用环形磁性写入头。