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    • 61. 发明申请
    • ERROR CORRECTION SYSTEM FOR A CLASS-D POWER STAGE
    • 一类D级电源故障校正系统
    • WO2008075318A2
    • 2008-06-26
    • PCT/IB2007/055279
    • 2007-12-21
    • BANG & OLUFSEN ICEPOWER A/SNIELSEN, Ole Neis
    • NIELSEN, Ole Neis
    • H03F3/217H03F1/32H03F2200/03H03F2200/144H03F2200/351H03F2200/372H03M1/1033H03M1/822
    • The present invention relates to a method for correcting for a source of non-linearity and noise introduced in a switching power amplification stage during power amplification of a pulse-modulated reference signal from a pulse modulator, where the method comprises the following steps: - providing an output stage embedded in an analogue self-oscillating control loop able to receive a pulse-referenced input signal; - generating a feedback signal from the switching power amplification stage or after a demodulation filter; - deriving an error signal by comparing the feedback signal with the reference signal; - filtering the error signal by a low pass filter for reducing the higher harmonics of the carrier; - adding a compensator for generating high loop gain in the audio band; - feeding the compensator output to a zero cross detector or comparator, thus providing a carrier for re-modulation or re-timing by feeding the filtered signal to a zero cross detector or comparator, which controls the output stage. The invention furthermore relates to various systems for implementing the above method.
    • 本发明涉及用于校正在来自脉冲调制器的脉冲调制参考信号的功率放大期间在开关功率放大级中引入的非线性和噪声源的方法,其中该方法包括以下步骤: - 提供 嵌入在能够接收脉冲参考输入信号的模拟自振荡控制环路中的输出级; - 从开关功率放大级产生反馈信号或在解调滤波器之后产生反馈信号; - 通过将反馈信号与参考信号进行比较来导出误差信号; - 通过低通滤波器对误差信号进行滤波,以降低载波的高次谐波; - 添加一个用于在音频带中产生高回路增益的补偿器; - 将补偿器输出馈送到零交叉检测器或比较器,从而通过将滤波后的信号馈送到控制输出级的零交叉检测器或比较器来提供用于重新调制或重新定时的载波。 本发明还涉及用于实现上述方法的各种系统。
    • 66. 发明申请
    • RADIATOR WITH ADAPTED FINS
    • WO2022129035A1
    • 2022-06-23
    • PCT/EP2021/085670
    • 2021-12-14
    • ASETEK DANMARK A/S
    • ANDERSEN, Martin RønnovSAKSAGER, Anders Hjørringgaard
    • F28D1/02F28F1/20F28D1/053F28D21/00F28F1/12H05K7/20
    • There is a need for better cooling solutions for the ever-increasing thermal density of computing systems. This is solved by providing a radiator (100) for a liquid cooling system for cooling a computing unit, the radiator comprising: - a first manifold (101) and a second manifold (102) having among them two liquid openings (103, 104) for connecting the radiator in a liquid loop, - channels (110) extending between the first manifold (101) and the second manifold (102) and providing parallel liquid paths between the manifolds (101, 102), - fin layers (130) sandwiched between sets of neighbouring channels (110) and extending between the first manifold (101) and the second manifold (102), - fastening means (120) for attaching a fan (10) to the radiator (100) in a predetermined position, determining a ring-shaped high-pressure zone (142) corresponding to an outer area of a fan radius (122) of an attached fan, where - at least one fin layer has a low-density section placed away from the high-pressure zone, and a high-density section being located in the high-pressure zone and having a higher fin density than the low-density section, - the density of the group of fin layers thereby varies both along the channels but also transverse of each channel, resulting in two-dimensional density variations across the radiator surface, sections of fins to be positioned in front of the ring-shaped high-pressure zone has a higher density than the section of fins away from the ring-shaped high-pressure zone.