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    • 2. 发明申请
    • MOTOR CONTROL CIRCUIT AND KEYBOARD ASSEMBLY HAVING SAME
    • 电机控制电路和键盘组件
    • US20130141021A1
    • 2013-06-06
    • US13600208
    • 2012-08-30
    • YI-XIN TUSONG-LIN TONGQI-YAN LUOHAI-QING ZHOU
    • YI-XIN TUSONG-LIN TONGQI-YAN LUOHAI-QING ZHOU
    • H02P3/00
    • G06F3/0202E05F15/73E05Y2900/606
    • An exemplary motor control circuit for controlling a motor includes a motor driving chip, a sensing unit, and a controller. The motor driving chip motor driving chip is electronically connected to the motor. The sensing unit includes a proximity sensor, the proximity sensor detects whether an external object is proximate to the proximity sensor. The controller is electronically connected to the motor driving chip and the sensing unit, the controller controls the motor driving chip to drive the motor to rotate in a first direction when an external object is detected, and controls the motor driving chip to drive the motor to rotate in a second direction reverse to the first direction when no external object is detected for a predetermined period of time.
    • 用于控制电动机的示例性电动机控制电路包括电动机驱动芯片,感测单元和控制器。 马达驱动芯片马达驱动芯片电连接到马达。 感测单元包括接近传感器,接近传感器检测外部物体是否靠近接近传感器。 控制器电连接到电动机驱动芯片和感测单元,当检测到外部物体时,控制器控制电动机驱动芯片驱动电动机沿第一方向旋转,并且控制电动机驱动芯片以驱动电动机 当在预定时间段内没有检测到外部物体时,沿与第一方向相反的第二方向旋转。
    • 5. 发明申请
    • TEST DEVICE FOR PRINTED CIRCUIT BOARD
    • 印刷电路板测试装置
    • US20130043896A1
    • 2013-02-21
    • US13271247
    • 2011-10-12
    • JIAN-CHUN PANHAI-QING ZHOUYI-XIN TU
    • JIAN-CHUN PANHAI-QING ZHOUYI-XIN TU
    • G01R31/00
    • G01R31/2806
    • A test device for testing a printed circuit board (PCB) includes a base and a measuring device. The measuring device includes a testing pin and is capable of measuring any desired point of the PCB on condition that the pin makes contact with the point at an included angle between the pin and a back surface of the PCB which is larger than a predetermined angle. The distance between the base and the PCB satisfies: H>L tan θ, where H is the vertical distance between the PCB and the base, L is the maximum length of an orthogonal projection of the pin on the PCB when the pin is contacting the point, and θ is the predetermined angle.
    • 用于测试印刷电路板(PCB)的测试装置包括基座和测量装置。 该测量装置包括测试销,并且能够测量PCB的任何所需点,条件是销以与销的大小成比大于预定角度的PCB与背面之间的夹角接触点。 基座和PCB之间的距离满足:H> L tan&Thetas;其中H是PCB和底座之间的垂直距离,L是当引脚接触时PCB上的销的正交投影的最大长度 点,和&thetas; 是预定角度。
    • 6. 发明申请
    • FAST-DISCHARGING CIRCUIT
    • 快速放电电路
    • US20130009474A1
    • 2013-01-10
    • US13411611
    • 2012-03-04
    • JIN-LIANG XIONGYI-XIN TUHAI-QING ZHOU
    • JIN-LIANG XIONGYI-XIN TUHAI-QING ZHOU
    • H02J1/10
    • G06F1/26G06F1/3296Y02D10/172Y10T307/50
    • A fast-discharge circuit includes at least one power supply group, a switch circuit, and a power connector. Each power supply group includes a power supply unit, stabilizing capacitances, a diode, and a resistance. The power supply unit includes a positive output and a negative output. Anodes of the stabilizing capacitances and the diode are connected to the positive output of the power supply unit. Cathodes of the stabilizing capacitances are connected to the negative output. A cathode of the diode is also connected to the negative output through the resistance. The switch circuit includes a NMOS transistor. A drain of the NMOS transistor is electrically connected to the negative outputs of each power supply; a source of the NMOS transistor is grounded. The power connector includes a PS-ON pin electrically connected to a gate of the NMOS transistor.
    • 快速放电电路包括至少一个电源组,开关电路和电源连接器。 每个电源组包括电源单元,稳定电容,二极管和电阻。 电源单元包括正输出和负输出。 稳定电容和二极管的阳极连接到电源单元的正极。 稳定电容的阴极连接到负输出。 二极管的阴极也通过电阻连接到负输出端。 开关电路包括NMOS晶体管。 NMOS晶体管的漏极电连接到每个电源的负输出; NMOS晶体管的源极接地。 电源连接器包括电连接到NMOS晶体管的栅极的PS-ON引脚。
    • 8. 发明申请
    • LOAD-TESTING CIRCUIT FOR USB PORTS
    • USB端口负载测试电路
    • US20120319663A1
    • 2012-12-20
    • US13213073
    • 2011-08-18
    • JIN-LIANG XIONGHAI-QING ZHOUYI-XIN TU
    • JIN-LIANG XIONGHAI-QING ZHOUYI-XIN TU
    • G05F1/10
    • G06F1/266G01R31/40
    • A power supply circuit is configured for simulating the maximum standard load currents for different kinds of USB ports, and each of the USB ports includes a power terminal; the load-testing circuit includes a voltage regulating circuit, a voltage dividing circuit, a first operational amplifier, a first transistor, and a current limiting resistor. The voltage regulating circuit is configured for supplying a reference voltage to the voltage dividing circuit. The reference voltage is divided by sub-circuits of the voltage dividing circuit. When the sub-circuit connected to the voltage regulating circuit and the first operational amplifier is changed, a current flows from the first transistor and the current limiting resistor is changed.
    • 电源电路被配置为模拟不同种类的USB端口的最大标准负载电流,并且每个USB端口包括电源端子; 负载测试电路包括电压调节电路,分压电路,第一运算放大器,第一晶体管和限流电阻器。 电压调节电路被配置为向分压电路提供参考电压。 参考电压由分压电路的子电路分压。 当连接到电压调节电路和第一运算放大器的子电路改变时,电流从第一晶体管流过并且限流电阻改变。