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1. 发明授权

US5161073A Low power disk drive spindle motor controller 失效
标题翻译：低功率磁盘驱动主轴电机控制器
公开(公告)号：US5161073A
公开(公告)日：1992-11-03
申请号：US556575
申请日：1990-07-20
申请人： Bipin V. Gami , Russell H. Jacobs
发明人： Bipin V. Gami , Russell H. Jacobs
IPC分类号： G11B19/00 , G11B19/20 , H02P27/06
CPC分类号： G11B19/2009
摘要： A hard disk drive digital storage system provides increased efficiency and reduced losses by using a switching regulator type power supply in which a variable duty cycle, low resistance n-channel field effect transistor is located near the ground side of the motor drive circuit. A voltage booster circuit provides higher switching voltages to the motor power phase control switching transistors.
摘要翻译：硬盘驱动器数字存储系统通过使用其中可变占空比低电阻n沟道场效应晶体管位于电动机驱动电路的接地侧的开关稳压器型电源来提高效率和降低的损耗。升压电路为电机功率相控开关晶体管提供更高的开关电压。

2. 发明授权

US4939600A Efficient head positioner power amplifier 失效
标题翻译：高效的头部定位器功率放大器
公开(公告)号：US4939600A
公开(公告)日：1990-07-03
申请号：US293818
申请日：1989-01-05
申请人： Ashok K. Desai , Russell H. Jacobs , Bipin V. Gami
发明人： Ashok K. Desai , Russell H. Jacobs , Bipin V. Gami
IPC分类号： G11B5/54 , G11B5/55 , G11B19/20 , G11B21/02 , G11B33/12
CPC分类号： G11B33/122 , G11B19/20 , G11B21/02 , G11B5/022 , G11B5/54 , G11B5/553
摘要： The power amplifier for the head positioning coil of a Winchester or hard disk drive digital storage system includes circuitry for generating complementary variable width pulses at a frequency above 100 kilohertz. The filter coupling the positive and negative power pulses to the head positioner coil includes two oppositely poled coils mounted on a single enclosing coil to avoid D.C. saturation and to maintain high inductance for high frequency noise filtering. Circuitry is also provided for improving the common mode noise rejection capability of the feedback circuit, and the head retract circuitry.
摘要翻译：用于温彻斯特或硬盘驱动器数字存储系统的头部定位线圈的功率放大器包括用于产生频率高于100千赫兹的互补可变宽度脉冲的电路。将正和负功率脉冲耦合到磁头定位器线圈的滤波器包括安装在单个封闭线圈上的两个相对极化的线圈，以避免直流饱和并且为高频噪声滤波保持高电感。还提供了电路来提高反馈电路的共模噪声抑制能力和磁头缩回电路。

3. 发明授权

US5246479A Drive motor controller for low power disk drive 失效
标题翻译：用于低功率磁盘驱动器的驱动电机控制器
公开(公告)号：US5246479A
公开(公告)日：1993-09-21
申请号：US714298
申请日：1991-06-18
申请人： Bipin V. Gami , Russell H. Jacobs
发明人： Bipin V. Gami , Russell H. Jacobs
IPC分类号： G11B19/20
CPC分类号： G11B19/2009
摘要： A hard disk drive digital storage system provides increased power efficiency and reduced power losses by using a switching regulator type DC to DC power converter, to control spindle motor speed, in which a variable duty cycle, low "ON" resistance n-channel power MOSFET transistor is located near the ground side of the motor drive circuit. A voltage booster circuit provides higher gate control switching voltages to the motor power phase commutation switching transistors. A sense resistor is connected between the converter and ground, and the voltage developed across this sense resistor provides a signal which is coupled to the motor control circuit to vary the duty cycle of the converter to regulate the peak current applied to the motor.
摘要翻译：硬盘驱动器数字存储系统通过使用开关稳压器型DC-DC功率转换器来提供更高的功率效率和更低的功率损耗，以控制主轴电机速度，其中可变占空比，低“ON”电阻n沟道功率MOSFET 晶体管位于电机驱动电路的接地侧附近。升压电路为电机功率相位换向晶体管提供更高的栅极控制开关电压。感测电阻连接在转换器和地之间，并且跨越该检测电阻器的电压提供了一个信号，该信号耦合到电机控制电路，以改变转换器的占空比，以调节施加到电机的峰值电流。

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