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488 条记录 (耗时 0.028 秒)

    Amplifier having an adjust resistor network
    1.
    发明授权
    Amplifier having an adjust resistor network 失效
    具有调节电阻网络的放大器

    公开(公告)号：US06362684B1

    公开(公告)日：2002-03-26

    申请号：US09506180

    申请日：2000-02-17

    申请人： Hans W. Klein ,  Jian Li ,  Yaohua Yang

    发明人： Hans W. Klein ,  Jian Li ,  Yaohua Yang

    IPC分类号： H03G310

    CPC分类号： H03G1/0088 ,  H03G3/001

    摘要： Provided is an amplifier circuit and method of using the same that features an adjustable resistor network to enable varying the operational characteristics of an amplifier. The resistor network includes primary resistors connected in series with a plurality of adjustment resistors connected to the output of an operational amplifier. A switching network is connected between the resistor network and the input of the operational amplifier. The switching network enables selectively varying the input and feedback resistance of the amplifier circuit to obtain a desired differential gain, while minimizing common-mode gain.

    摘要翻译： 提供了一种放大器电路及其使用方法，其特征在于具有可调电阻器网络，以能够改变放大器的操作特性。 电阻网络包括与连接到运算放大器的输出的多个调节电阻串联连接的主电阻器。 开关网络连接在电阻网络和运算放大器的输入端之间。 开关网络能够选择性地改变放大器电路的输入和反馈电阻以获得期望的差分增益，同时最小化共模增益。

    Precision analog level shifter with programmable options
    2.
    发明授权
    Precision analog level shifter with programmable options 有权
    具有可编程选项的精密模拟电平转换器

    公开(公告)号：US06717451B1

    公开(公告)日：2004-04-06

    申请号：US10159089

    申请日：2002-05-30

    申请人： Hans W. Klein ,  Paul Hildebrant ,  Joey Doernberg ,  Jian Li

    发明人： Hans W. Klein ,  Paul Hildebrant ,  Joey Doernberg ,  Jian Li

    IPC分类号： H03L500

    CPC分类号： H03K5/003 ,  H03F1/301 ,  H03F3/505 ,  H03F2203/5027 ,  H03F2203/5031

    摘要： The inventive level shifting circuit shifts an analog input signal by a precise amount. This allows it to be used in precision instrumentation applications where precise signal shifts are critical. It uses a self-biasing feedback circuit to determine the bias current needed to shift an analog signal by a desired amount. The circuit automatically compensates for influences by temperature, supply voltage, and process variations. This circuit also has value as a stand-alone function for other (non-programmable) products.

    摘要翻译： 本发明的电平移位电路使模拟输入信号移位精确的量。 这允许将其用于精确的信号偏移至关重要的精密仪器应用中。 它使用自偏置反馈电路来确定将模拟信号移位所需量所需的偏置电流。 该电路自动补偿温度，电源电压和工艺变化的影响。 该电路还具有作为其他（不可编程）产品的独立功能的价值。

    Highly linear programmable transconductor with large input-signal range
    3.
    发明授权
    Highly linear programmable transconductor with large input-signal range 有权
    具有大输入信号范围的高线性可编程跨导体

    公开(公告)号：US06583652B1

    公开(公告)日：2003-06-24

    申请号：US10159009

    申请日：2002-05-30

    申请人： Hans W. Klein ,  Jian Li ,  Paul Hildebrant

    发明人： Hans W. Klein ,  Jian Li ,  Paul Hildebrant

    IPC分类号： H03K522

    CPC分类号： H03H11/04 ,  H03F3/45197 ,  H03F2203/45356 ,  H03F2203/45504

    摘要： An improved programmable transconductor can be efficiently implemented utilizing a programmable resistor circuit that allows for only a selected portion of the resistor circuit (associated with a desired transconductor gain) to be coupled between summing nodes of the transconductor. Additional switching circuits can be used to reduce gain errors associated with the switches used to implement the aforementioned solution. Additionally, the improved programmable transconductor can be integrated into fully differential programmable analog integrated circuits, thereby enhancing the performance of such integrated circuits.

    摘要翻译： 可以使用可允许只有电阻器电路的所选部分（与期望的跨导体增益相关联）耦合在跨导体的求和节点之间来有效地实现改进的可编程跨导体。 可以使用额外的开关电路来减少与用于实现上述解决方案的开关相关联的增益误差。 此外，改进的可编程跨导体可以集成到全差分可编程模拟集成电路中，从而提高这种集成电路的性能。

    Multimode output stage converting differential to single-ended signals using current-mode input signals
    4.
    发明授权
    Multimode output stage converting differential to single-ended signals using current-mode input signals 有权
    多模输出级使用电流模式输入信号将差分转换为单端信号

    公开(公告)号：US06806771B1

    公开(公告)日：2004-10-19

    申请号：US10159681

    申请日：2002-05-31

    申请人： Paul Hildebrant ,  Jian Li ,  Hans W. Klein

    发明人： Paul Hildebrant ,  Jian Li ,  Hans W. Klein

    IPC分类号： H03G310

    CPC分类号： H03F3/45475 ,  H03F1/3211 ,  H03F3/3022 ,  H03F3/45183 ,  H03F3/45748 ,  H03F3/45973 ,  H03F2200/261 ,  H03F2200/78 ,  H03F2203/45458 ,  H03F2203/45526 ,  H03G3/001

    摘要： An output block for an in-system programmable analog integrated circuit. The output block features an output amplifier that accepts a differential current-mode input signal and provides a single-ended output voltage. The output amplifier is also selectably operable as a linear amplifier, an integrator or a comparator. The output block also includes a common-mode feedback circuit (CMFB), an analog trim circuit (OATRM), a CLAMP circuit, and an offset calibration circuit (CLDAC), all coupled to the differential input of the output amplifier. The CMFB exhibits bandwidth comparable to that of the output amplifier and a drive capability that enables the differential-input to single-ended output conversion. The CLAMP is connected to the differential input in the comparator mode in order to avoid slow recovery from an overdrive condition. The OATRM forces a difference current into the differential input that compensates for a (gain independent) offset voltage that results from various mismatches. The CLDAC uses a digital-to-analog converter (DAC) to perform offset calibration at the differential input of the output amplifier. In addition, the output block is configured to be operational in a number of user-selectable modes, including, in one embodiment, one or more of: a linear (NORM) mode, a comparator (COMP) mode, and an integrator (INT) mode. An amplifier in the output block is variously reconfigured to achieve the selected mode of operation. Also, the output block accommodates an autocalibration (CAL) technique by clamping the single-ended output stage and balancing, through operation of the CLDAC, signals at an input node and at an interstage node of the amplifier.

    摘要翻译： 用于在系统可编程模拟集成电路的输出块。 输出模块具有输出放大器，可接受差分电流模式输入信号，并提供单端输出电压。 输出放大器也可选择可操作为线性放大器，积分器或比较器。 输出块还包括共模反馈电路（CMFB），模拟微调电路（OATRM），钳位电路和偏移校准电路（CLDAC），全部耦合到输出放大器的差分输入。 CMFB具有与输出放大器的带宽相当的带宽，以及使差分输入能够实现单端输出转换的驱动能力。 CLAMP在比较器模式下连接到差分输入，以避免从过驱动条件恢复缓慢。 OATRM将差分电流强制为差分输入，补偿由各种不匹配产生的（增益无关）偏移电压。 CLDAC使用数模转换器（DAC）在输出放大器的差分输入端执行偏移校准。 此外，输出块被配置为可在多个用户可选模式下操作，包括在一个实施例中，一个或多个：线性（NORM）模式，比较器（COMP）模式和积分器（INT ）模式。 输出块中的放大器被不同地重新配置以实现所选择的操作模式。 此外，输出块通过钳位单端输出级并通过CLDAC的操作在放大器的输入节点和级间节点处的信号进行平衡来适应自动校准（CAL）技术。

    Ice cube tray box for facilitating ice making and ice removing
    5.
    发明授权
    Ice cube tray box for facilitating ice making and ice removing 有权

    公开(公告)号：US12007155B2

    公开(公告)日：2024-06-11

    申请号：US17702800

    申请日：2022-03-24

    申请人： Jian Li

    发明人： Jian Li

    IPC分类号： F25C1/24

    CPC分类号： F25C1/24 ,  F25C2400/06

    摘要： An ice cube tray box for facilitating ice making and ice removing, which includes a box body, a cover body arranged at an open end of the box body, and an ice cube tray body arranged inside the box body, wherein a vertical upward rib assembly is arranged on an inner wall of the box body, a notch assembly matched with the rib assembly in use is arranged on an outer edge of the ice cube tray body, an ice removing plate for facilitating ice removing is clamped and arranged on the inner side of the cover body, and ice knocking columns are integrally arranged on the ice removing plate.

    Novel Baby Holder
    6.
    发明公开
    Novel Baby Holder 审中-公开

    公开(公告)号：US20240016311A1

    公开(公告)日：2024-01-18

    申请号：US17865496

    申请日：2022-07-15

    申请人： Jian Li

    发明人： Jian Li

    IPC分类号： A47D1/04

    CPC分类号： A47D1/04

    摘要： The present invention is a novel baby holder with a main body configured having a central cavity constructed and arrange to hold a baby with the main cavity having a front pair of retractable legs and a rear pair of retractable legs.

    Vaned valve for exhaust gas recirculation line
    8.
    发明授权
    Vaned valve for exhaust gas recirculation line 有权

    公开(公告)号：US11441521B2

    公开(公告)日：2022-09-13

    申请号：US16627309

    申请日：2017-08-15

    申请人： VOLVO TRUCK CORPORATION ,  Jian Li ,  John Lowe

    发明人： Jian Li ,  John Lowe

    IPC分类号： F02M26/71 ,  F02M26/68 ,  F02M26/16 ,  F02M26/21 ,  F02M26/53 ,  F02M26/69

    摘要： A valve for m exhaust gas recirculation Mae in an engine includes a first barrel connectable to a first group of cylinders, a second barrel connectable to a second group of cylinders, and a center barrel between the first and second barrels and connectable to an intake of the engine, A poppet valve with two valve heads mounted on a valve stem is provided to open and close openings between the first and second barrels, with one of the valve beads of the poppet valve opening into the center barrel Vanes are provided in the center barrel to direct flow from the opening by the valve bead that opens into the center barrel toward the outlet opening.