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    • 2. 发明申请
    • OVERVOLTAGE PROTECTION CIRCUIT
    • 过电压保护电路
    • US20130148247A1
    • 2013-06-13
    • US13600108
    • 2012-08-30
    • HAI-QING ZHOUJIN-LIANG XIONGYI-XIN TU
    • HAI-QING ZHOUJIN-LIANG XIONGYI-XIN TU
    • H02H3/20
    • H02H9/04H02H3/20
    • An overvoltage protection circuit includes a power device for outputting a plurality of first powers, a plurality of VRMs for respectively receiving the plurality of first powers, a plurality of voltage dividing circuits, a reference power supply for outputting a reference voltage, and a comparison circuit having a comparator. Each VRM converts a corresponding first power to a regulated second power. The plurality of voltage dividing circuits respectively divides voltages of the second powers, each voltage dividing circuit outputs a divided voltage. The comparator compares a combination of the divided voltages with the reference voltage, and when an overvoltage occurs in at least one of the second powers, the comparator outputs a control signal via the output terminal to the power device to control the power device to shut down all of the first powers.
    • 过电压保护电路包括用于输出多个第一功率的功率器件,用于分别接收多个第一功率的多个VRM,多个分压电路,用于输出参考电压的参考电源,以及比较电路 具有比较器。 每个VRM将相应的第一功率转换为调节的第二功率。 多个分压电路分别划分第二功率的电压,每个分压电路输出分压。 比较器将分压电压与参考电压的组合进行比较,当在至少一个第二功率中发生过电压时,比较器通过输出端输出控制信号给功率器件,以控制功率器件关断 所有的第一个权力。
    • 5. 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。
    • 6. 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。
    • 8. 发明申请
    • INDICATOR LIGHT CONTROL CIRCUIT
    • 指示灯控制电路
    • US20130147632A1
    • 2013-06-13
    • US13587862
    • 2012-08-16
    • YI-XIN TUJIN-LIANG XIONGHAI-QING ZHOU
    • YI-XIN TUJIN-LIANG XIONGHAI-QING ZHOU
    • G08B5/36
    • H05B33/0806
    • An indicator light control circuit for controlling a single indicator light to indicate a high or low link speed of a network connection includes a pulse signal generating circuit, a bias circuit having a digital potentiometer, and a controller. The pulse signal generating circuit generates a pulse signal. The digital potentiometer is electronically connected to the pulse signal generating circuit and the controller. The controller adjusts the effective resistance of the digital potentiometer connected to the pulse signal generating circuit according to different link speeds being experienced in the network connection, to adjust a duty cycle of the pulse signal, thereby changing the on-time and off-time of the indicator light.
    • 用于控制单个指示灯以指示网络连接的高或低链路速度的指示灯控制电路包括脉冲信号发生电路,具有数字电位计的偏置电路和控制器。 脉冲信号发生电路产生脉冲信号。 数字电位器电连接到脉冲信号发生电路和控制器。 控制器根据网络连接中遇到的不同链路速度,调整连接到脉冲信号发生电路的数字电位器的有效电阻,调整脉冲信号的占空比,从而改变脉冲信号发生电路的导通时间和关断时间 指示灯。
    • 9. 发明申请
    • OVERVOLTAGE PROTECTION CIRCUIT
    • 过电压保护电路
    • US20130128404A1
    • 2013-05-23
    • US13570206
    • 2012-08-08
    • YI-XIN TUJIN-LIANG XIONGHAI-QING ZHOU
    • YI-XIN TUJIN-LIANG XIONGHAI-QING ZHOU
    • H02H3/20
    • H02H7/18H02H3/202
    • A protection circuit that protects a load charged by a power supply. The protection circuit includes a reference voltage set circuit, a sampling circuit, a switch, and a comparator. The reference voltage set circuit provides a reference voltage. The sampling circuit is electrically connected to the power supply and provides a sampling voltage based on a charge voltage output from the power supply to the load. The switch is electrically connected between the power supply and the load. The comparator includes a non-inverting input terminal electrically connected to the reference voltage set circuit, an inverting input terminal electrically connected to the sampling circuit, and an output terminal electrically connected to the switch. The comparator compares the sampling voltage with the reference voltage, and controls the switch to turn on or off according to the comparison.
    • 保护由电源充电的负载的保护电路。 保护电路包括参考电压设置电路,采样电路,开关和比较器。 参考电压设置电路提供参考电压。 采样电路电连接到电源,并且基于从电源向负载输出的充电电压提供采样电压。 开关电连接在电源和负载之间。 比较器包括电连接到参考电压设置电路的非反相输入端子,电连接到采样电路的反相输入端子和电连接到开关的输出端子。 比较器将采样电压与参考电压进行比较,并根据比较控制开关导通或关断。