公开(公告)号：US08169249B2

公开(公告)日：2012-05-01

申请号：US13242307

申请日：2011-09-23

申请人： Guoxing Li ,  Quanwang Liu ,  Shiqiang Liu ,  Juncai Hu

发明人： Guoxing Li ,  Quanwang Liu ,  Shiqiang Liu ,  Juncai Hu

IPC分类号： H03L5/00

CPC分类号： G01R31/3658 ,  G01R19/0084 ,  G01R35/005

摘要： In a signal monitoring system, a circuit includes an input terminal and an output terminal. In addition, a processor coupled to the circuit is operable for calculating a parameter indicative of an error factor of the circuit by setting a level difference between an input signal at the input terminal and an output signal at the output terminal to a predetermined level.

摘要翻译： 在信号监控系统中，电路包括输入端子和输出端子。 此外，耦合到电路的处理器可操作用于通过将输入端子处的输入信号和输出端子处的输出信号之间的电平差设置为预定电平来计算指示电路的误差因子的参数。

公开(公告)号：US07642750B2

公开(公告)日：2010-01-05

申请号：US11508865

申请日：2006-08-22

申请人： Shiqiang Liu ,  Sean Xiao ,  Guoxing Li ,  Liusheng Liu

发明人： Shiqiang Liu ,  Sean Xiao ,  Guoxing Li ,  Liusheng Liu

IPC分类号： H02J7/00 ,  H02J7/04

CPC分类号： H02J7/0068 ,  H02J7/0031

摘要： A circuit is used for controlling charging and discharging a battery. The circuit comprises a first MOSFET for controlling discharging the battery, and a second MOSFET coupled in series to the battery and the first MOSFET for controlling charging the battery. The first and second MOSFETs have body diodes respectively, and the first body diode of the first MOSFET and the second body diode of the second MOSFET are coupled in opposite directions. A load is coupled to the battery and a common node between the first and second MOSFETs such that power in the battery is delivered to said load when the first MOSFET is turned on. The circuit further comprises a power source coupled to the second switch in series and power is delivered from the power source to the battery when the first and second MOSFETs are turned on.

摘要翻译： 电路用于控制电池的充放电。 电路包括用于控制对电池放电的第一MOSFET和与电池串联耦合的第二MOSFET和用于控制对电池充电的第一MOSFET。 第一和第二MOSFET分别具有体二极管，第一MOSFET的第一体二极管和第二MOSFET的第二体二极管以相反的方向耦合。 负载耦合到电池和第一和第二MOSFET之间的公共节点，使得当第一MOSFET导通时，电池中的电力被传送到所述负载。 电路还包括串联耦合到第二开关的电源，并且当第一和第二MOSFET导通时，电力从电源传送到电池。

公开(公告)号：US06994755B2

公开(公告)日：2006-02-07

申请号：US10293680

申请日：2002-11-13

申请人： Shiqiang Liu ,  Jinfang Liu

发明人： Shiqiang Liu ,  Jinfang Liu

IPC分类号： H01F1/057

CPC分类号： H01F1/0577

摘要： Disclosed are methods for producing compositionally modified sintered RE—Fe—B-based rare earth permanent magnets, by the addition of small amounts of Nd, Cu, Ti, Nb, or other transition metals, and mixtures thereof, to maximize fracture toughness with corresponding improved machinability, while maintaining maximum energy product, said method comprising the steps of: (a) prepare a magnetic composition; (b) melt the composition and form powders with an average particle size smaller than 5 microns from the same; (c) press the powder under a magnetic field to obtain green compacts, which are then sintered at from about 1030° C. to 1130° C., and heat treating the sintered material at from about 570° C. to 900° C.

摘要翻译： 公开了通过添加少量Nd，Cu，Ti，Nb或其它过渡金属及其混合物来生产组分改性的RE-Fe-B基稀土永磁体的方法，以使相应的 提高机械加工性，同时保持最大能量产品，所述方法包括以下步骤

公开(公告)号：US20060005898A1

公开(公告)日：2006-01-12

申请号：US11171521

申请日：2005-06-30

申请人： Shiqiang Liu ,  Don Lee

发明人： Shiqiang Liu ,  Don Lee

IPC分类号： H01F1/055

CPC分类号： B82Y25/00 ,  H01F1/0054 ,  H01F1/055 ,  H01F1/057 ,  H01F1/0579 ,  H01F1/058 ,  H01F1/059 ,  H01F41/0266 ,  H01F41/0273

摘要： A bulk, anisotropic, nanocomposite, rare earth permanent magnet. Methods of making the bulk, anisotropic, nanocomposite, rare earth permanent magnets are also described.

摘要翻译： 大块，各向异性，纳米复合稀土永磁体。 还描述了制造本体，各向​​异性，纳米复合稀土永磁体的方法。

公开(公告)号：US09118238B2

公开(公告)日：2015-08-25

申请号：US12313114

申请日：2008-11-17

申请人： Quanwang Liu ,  Guo Xing Li ,  Shiqiang Liu

发明人： Quanwang Liu ,  Guo Xing Li ,  Shiqiang Liu

IPC分类号： G05F1/10 ,  H02M3/07

CPC分类号： H02M3/07

摘要： An electronic system includes a charge pump driver for generating an output to control an electronic element. The electronic system further includes a clock generator coupled to the charge pump driver. The clock generator can generate a clock signal to control the charge pump driver and adjust a frequency of the clock signal according to a status of the electronic element.

公开(公告)号：US20120013366A1

公开(公告)日：2012-01-19

申请号：US13242307

申请日：2011-09-23

申请人： Guoxing LI ,  Quanwang LIU ,  Shiqiang LIU ,  Juncai HU

发明人： Guoxing LI ,  Quanwang LIU ,  Shiqiang LIU ,  Juncai HU

IPC分类号： H03K5/22

CPC分类号： G01R31/3658 ,  G01R19/0084 ,  G01R35/005

摘要： In a signal monitoring system, a circuit includes an input terminal and an output terminal. In addition, a processor coupled to the circuit is operable for calculating a parameter indicative of an error factor of the circuit by setting a level difference between an input signal at the input terminal and an output signal at the output terminal to a predetermined level.

摘要翻译： 在信号监控系统中，电路包括输入端子和输出端子。 此外，耦合到电路的处理器可操作用于通过将输入端子处的输入信号和输出端子处的输出信号之间的电平差设置为预定电平来计算指示电路的误差因子的参数。

公开(公告)号：US07701177B2

公开(公告)日：2010-04-20

申请号：US11644314

申请日：2006-12-21

申请人： Shiqiang Liu ,  Guoxing Li ,  Sean Xiao ,  Liusheng Liu

发明人： Shiqiang Liu ,  Guoxing Li ,  Sean Xiao ,  Liusheng Liu

IPC分类号： H02J7/04 ,  H02J7/16 ,  H02J7/00

CPC分类号： H02J7/0075 ,  H01M10/44

摘要： A battery pre-charging circuit includes a pre-charging path, a pre-charging switch and a low-voltage pre-charging circuit. The pre-charging path is coupled between a charger and a battery for providing a pre-charging current from the charger to the battery. The pre-charging switch is coupled to the pre-charging path for conducting along the pre-charging path. The low-voltage pre-charging circuit is coupled to the pre-charging switch for controlling the pre-charging switch. The low-voltage pre-charging circuit is configured to switch on the pre-charging switch when the battery voltage is below a first battery voltage level.

摘要翻译： 电池预充电电路包括预充电路径，预充电开关和低压预充电电路。 预充电路径耦合在充电器和电池之间，用于提供从充电器到电池的预充电电流。 预充电开关耦合到预充电路径以沿预充电路径导通。 低压预充电电路耦合到预充电开关，用于控制预充电开关。 低电压预充电电路被配置为当电池电压低于第一电池电压电平时接通预充电开关。

公开(公告)号：US20060197513A1

公开(公告)日：2006-09-07

申请号：US11172444

申请日：2005-06-30

申请人： Xiaohu Tang ,  Wei Wang ,  XiaoHua Hou ,  Shiqiang Liu

发明人： Xiaohu Tang ,  Wei Wang ,  XiaoHua Hou ,  Shiqiang Liu

IPC分类号： G05F1/56 ,  G05F1/40

CPC分类号： G05F1/575 ,  H03F3/345 ,  H03F3/45183 ,  H03F3/45659 ,  H03F2203/45008 ,  H03F2203/45248 ,  H03F2203/45404 ,  H03F2203/45418 ,  H03F2203/45424

摘要： The present invention is a LDO voltage regulator circuit with common-mode feedback. The LDO voltage regulator includes an error amplifier with a common-mode feedback unit, a pass device and a compensation circuit. A signal from the pass device acts as an input signal to the error amplifier and is compared with another input signal, producing a differential signal. The differential signal is amplified and then provided to the pass device. A capacitor in the compensation unit provides frequency compensation to the LDO voltage regulator. The common-mode feedback unit incorporated into the error amplifier greatly improves a slew rate of a gate voltage of the pass device.

摘要翻译： 本发明是具有共模反馈的LDO稳压电路。 LDO稳压器包括具有共模反馈单元，通过装置和补偿电路的误差放大器。 来自通过装置的信号用作误差放大器的输入信号，并与另一个输入信号进行比较，产生差分信号。 差分信号被放大，然后提供给通过装置。 补偿单元中的电容为LDO稳压器提供频率补偿。 结合到误差放大器中的共模反馈单元大大提高了通过器件的栅极电压的转换速率。

公开(公告)号：US20060076087A1

公开(公告)日：2006-04-13

申请号：US11284275

申请日：2005-11-21

申请人： Shiqiang Liu ,  Jinfang Liu

发明人： Shiqiang Liu ,  Jinfang Liu

IPC分类号： H01F1/057

CPC分类号： H01F1/0577

摘要： Compositionally modified, sintered RE-Fe-B-based rare earth permanent magnets demonstrate the optimum combination of mechanical and magnetic properties, thereby maximizing fracture toughness with corresponding improved machinability, while maintaining the maximum energy product (BH)max.

摘要翻译： 组成改性烧结RE-Fe-B系稀土永磁体表现出机械和磁性能的最佳组合，从而使断裂韧性最大化，同时保持最大能量乘积（BH）最大值。

公开(公告)号：US06726781B2

公开(公告)日：2004-04-27

申请号：US10241895

申请日：2002-09-12

申请人： Marlin S. Walmer ,  Christina H. Chen ,  Shiqiang Liu ,  Michael H. Walmer ,  G. Edward Kuhl

发明人： Marlin S. Walmer ,  Christina H. Chen ,  Shiqiang Liu ,  Michael H. Walmer ,  G. Edward Kuhl

IPC分类号： H01F1055

CPC分类号： H01F1/055

摘要： A permanent magnet is provided which retains its magnetic properties and exhibits a linear extrinsic demagnetization curve at elevated temperatures up to 700° C. The magnet is represented by the general formula RE(CoWFeVCuXTY)Z, where RE is a rare earth metal selected from the group consisting of Sm, Gd, Pr, Nd, Dy, Ce, Ho, Er, La, Y, Tb, and mixtures thereof and T represents a transition metal(s) selected from the group consisting of Zr, Hf, Ti, Mn, Cr, Nb, Mo, W, V, Ni, Ta, and mixtures thereof.

摘要翻译： 提供永磁体，其保持其磁特性并且在高达700℃的升高的温度下显示出线性的外在退磁曲线。磁体由通式RE（CoWFeVCuXTY）Z表示，其中RE是稀土金属，其选自 由Sm，Gd，Pr，Nd，Dy，Ce，Ho，Er，La，Y，Tb及其混合物组成的组，T表示选自Zr，Hf，Ti，Mn ，Cr，Nb，Mo，W，V，Ni，Ta及其混合物。