LIMITING AMPLIFIERS
    82.
    发明申请
    LIMITING AMPLIFIERS 有权
    限制放大器

    公开(公告)号:US20100052787A1

    公开(公告)日:2010-03-04

    申请号:US12613752

    申请日:2009-11-06

    IPC分类号: H03F3/45 H03F3/193

    摘要: A limiting amplifier with an input stage with dc offset cancellation, identical gain stages, an output buffer and a feedback filter. The input stage receives a differential input signal and outputs a first intermediate differential signal. The gain stages are cascaded to amplify the first intermediate differential signal and generate a second intermediate differential signal, amplified by the output buffer to produce an output signal. The feedback filter provides a dc offset voltage of the output signal to the input stage for the dc offset cancellation. The input stage comprises a resistor network coupled between a pair of input nodes and a power line and comprising a common resistor, a pair of load resistors and a shunt resistor. The load resistors share a common terminal connected to the common resistor that is connected to the power line. The shunt resistor has two terminals respectively connected to the load resistors.

    摘要翻译: 具有直流失调消除输入级的限幅放大器,相同的增益级,输出缓冲器和反馈滤波器。 输入级接收差分输入信号并输出​​第一中间差分信号。 增益级级联以放大第一中间差分信号并产生第二中间差分信号,由输出缓冲器放大以产生输出信号。 反馈滤波器为直流偏移消除提供输出级的输出信号的直流失调电压。 输入级包括耦合在一对输入节点和电源线之间并包括公共电阻器,一对负载电阻器和分流电阻器的电阻器网络。 负载电阻共用连接到与电源线相连的公共电阻的公共端子。 分流电阻有两个端子分别连接到负载电阻。

    FREQUENCY SYNTHESIZER
    84.
    发明申请
    FREQUENCY SYNTHESIZER 有权
    频率合成器

    公开(公告)号:US20090322432A1

    公开(公告)日:2009-12-31

    申请号:US12556710

    申请日:2009-09-10

    IPC分类号: H03L7/085

    摘要: A frequency synthesizer. The frequency synthesizer comprises a harmonic locked phase/frequency detector, a low pass filter, a voltage controlled oscillator, and a frequency divider. The harmonic locked phase/frequency detector receives a reference signal and a divided signal. The low pass filter is coupled to the harmonic locked phase/frequency detector. The voltage controlled oscillator is coupled to the low pass filter and provides an output signal. The frequency divider is coupled between the voltage controlled oscillator and the harmonic locked phase/frequency detector. Frequency of the divided signal is a harmonic frequency of the reference signal.

    摘要翻译: 频率合成器。 频率合成器包括谐波锁相/频率检测器,低通滤波器,压控振荡器和分频器。 谐波锁相/频率检测器接收参考信号和分频信号。 低通滤波器耦合到谐波锁相/频率检波器。 压控振荡器耦合到低通滤波器并提供输出信号。 分频器耦合在压控振荡器和谐波锁相/频率检测器之间。 分频信号的频率是参考信号的谐波频率。

    FUEL CELL MODULE
    85.
    发明申请
    FUEL CELL MODULE 审中-公开
    燃料电池模块

    公开(公告)号:US20090176144A1

    公开(公告)日:2009-07-09

    申请号:US11971359

    申请日:2008-01-09

    IPC分类号: H01M2/08

    摘要: The present invention provides a fuel cell, including a composite bipolar plate and gasket connecting bipolar plate. A sub-channel is assembled at a concave side of the gasket corresponding with bipolar plate. Main channels of gas running through both sides of the bipolar plate are arranged at separation positions between the bipolar plate and gas sub-channel. The main channels of gas and the gas sub-channel are connected through the channel. The airtight layer is assembled between the bipolar plate and gasket. With the airtight layer, the bipolar plate and gasket can be locked and fixed together steadily and tightly, so that the spaces of flow channels for different fuels can be definitely separated, without any leakage and mistaken mixture.

    摘要翻译: 本发明提供一种燃料电池,其包括复合双极板和连接双极板的垫片。 子通道组装在与双极板对应的垫圈的凹面处。 通过双极板两侧的气体的主通道布置在双极板和气体子通道之间的分离位置。 气体和气体子通道的主要通道通过通道连接。 气密层组装在双极板和垫片之间。 通过密封层,双极板和垫片可以稳定,紧密地锁定和固定在一起,使不同燃料的流动通道的空间可以绝对分离,没有任何泄漏和错误的混合。

    LIMITING AMPLIFIERS
    87.
    发明申请
    LIMITING AMPLIFIERS 有权
    限制放大器

    公开(公告)号:US20080030266A1

    公开(公告)日:2008-02-07

    申请号:US11688265

    申请日:2007-03-20

    IPC分类号: H03F1/02

    摘要: A limiting amplifier with an input stage with dc offset cancellation, identical gain stages, an output buffer and a feedback filter. The input stage receives a differential input signal and outputs a first intermediate differential signal. The gain stages are cascaded to amplify the first intermediate differential signal and generate a second intermediate differential signal, amplified by the output buffer to produce an output signal. The feedback filter provides a dc offset voltage of the output signal to the input stage for the dc offset cancellation. The input stage comprises a resistor network coupled between a pair of input nodes and a power line and comprising a common resistor, a pair of load resistors and a shunt resistor. The load resistors share a common terminal connected to the common resistor that is connected to the power line. The shunt resistor has two terminals respectively connected to the load resistors.

    摘要翻译: 具有直流失调消除输入级的限幅放大器,相同的增益级,输出缓冲器和反馈滤波器。 输入级接收差分输入信号并输出​​第一中间差分信号。 增益级级联以放大第一中间差分信号并产生第二中间差分信号,由输出缓冲器放大以产生输出信号。 反馈滤波器为直流偏移消除提供输出级的输出信号的直流失调电压。 输入级包括耦合在一对输入节点和电源线之间并包括公共电阻器,一对负载电阻器和分流电阻器的电阻器网络。 负载电阻共用连接到与电源线相连的公共电阻的公共端子。 分流电阻有两个端子分别连接到负载电阻。