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    • 1. 发明申请
    • NOVEL COMPARATOR CIRCUIT WITH SCHMITT TRIGGER HYSTERESIS CHARACTER
    • 新型比较器电路与SCHMITT TRIGGER HYSTERESIS CHARACTER
    • US20070241794A1
    • 2007-10-18
    • US11406464
    • 2006-04-18
    • Ming WangYen-An Chang
    • Ming WangYen-An Chang
    • H03K5/22
    • H03K5/2472
    • A circuit and a method are provided to produce a novel comparator with Schmitt trigger hysteresis character. The circuit includes a current source which controls the magnitude of current flow through this comparator circuit. It has a first logic device which is turned ON by a reference voltage, and a second logic device is turned ON by a comparator input voltage. A first feedback device is turned ON by a negative comparator output. A first parallel resistor is connected in parallel to the first feedback device. A second feedback device is turned ON by a positive comparator output. A second parallel resistor is connected in parallel to the second feedback device. The first and second parallel resistors are used to provide the differential comparator with switching voltage offsets which result in the Schmitt trigger hysteresis character.
    • 提供电路和方法以产生具有施密特触发滞后特性的新型比较器。 该电路包括电流源,其控制通过该比较器电路的电流的大小。 它具有通过参考电压接通的第一逻辑器件,并且第二逻辑器件由比较器输入电压导通。 第一反馈装置由负比较器输出导通。 第一并联电阻器与第一反馈装置并联连接。 第二个反馈装置由正比较器输出导通。 第二并联电阻器与第二反馈装置并联连接。 第一和第二并联电阻用于为差分比较器提供开关电压偏移,这导致施密特触发迟滞特性。
    • 3. 发明申请
    • Woolen wool washing apparatus for chemical fiber production
    • US20200181803A1
    • 2020-06-11
    • US16792853
    • 2020-02-17
    • Ming Wang
    • Ming Wang
    • D01C3/00D06B3/02
    • The invention discloses a wool raw wool washing device for chemical fiber production, which includes a washing machine. The washing machine is provided with a working cavity. A front end wall of the working cavity is provided with a storage cavity with an upward opening. The wool raw wool is installed in the washing machine. Two dispersing mechanisms are symmetrically arranged in the working cavity in the storage cavity, and the dispersing mechanism includes a connecting shaft rotatably connected to the rear wall of the working cavity. A rotating wheel is fixed at the front end of the connecting shaft. The connecting shaft is provided with a collar that can slide back and forth, and the rotating wheel is provided with a slidable dispersing rod. The rotation of the connecting shaft can drive the rotating wheel to rotate, and the device can disperse the raw wool in the lump. After washing into small balls, it has a high washing efficiency, and by dispersing into small balls, it helps to discharge the stones and branches in the wool, and has a good washing effect. The overall mechanical linkage of the device is relatively good, High, more energy efficient.
    • 8. 发明授权
    • Printed circuit boards
    • 印刷电路板
    • US08049113B2
    • 2011-11-01
    • US12047152
    • 2008-03-12
    • Dong-Qing HeMing WangChih-Yi TuCheng-Hsien Lin
    • Dong-Qing HeMing WangChih-Yi TuCheng-Hsien Lin
    • H05K1/02
    • H05K1/025H05K1/111H05K2201/09727Y02P70/611
    • The present invention relates to a printed circuit board. In one embodiment, a printed circuit board includes a dielectric layer and a conductive trace formed on the dielectric layer. The conductive layer includes a first conductive portion, a connecting portion and a second conductive portion. The connecting portion includes a first end and a second end. The first end is connected to the first conductive portion; the second end is connected to the second conductive portion. A width of the connecting portion gradually decreases from the first end to the second end. Reflection and cross talk of signals transmitted in the presented printed circuit board can be reduced.
    • 印刷电路板技术领域本发明涉及印刷电路板。 在一个实施例中,印刷电路板包括介电层和形成在电介质层上的导电迹线。 导电层包括第一导电部分,连接部分和第二导电部分。 连接部分包括第一端和第二端。 第一端连接到第一导电部分; 第二端连接到第二导电部分。 连接部的宽度从第一端到第二端逐渐减小。 可以减少在所呈现的印刷电路板中传输的信号的反射和串扰。