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    COMMUNICATION LINE DRIVER PROTECTION CIRCUITRY, SYSTEMS AND METHODS
    2.
    发明申请
    COMMUNICATION LINE DRIVER PROTECTION CIRCUITRY, SYSTEMS AND METHODS 有权
    通信线路驱动器保护电路，系统和方法

    公开(公告)号：US20150002971A1

    公开(公告)日：2015-01-01

    申请号：US14488702

    申请日：2014-09-17

    Applicant: Infineon Technologies Austria AG

    Inventor： CHEOW GUAN LIM ,  FAN YUNG MA

    IPC: H02H11/00

    CPC classification number: H02H11/007 ,  G01R19/16576 ,  G01R31/2853 ,  G01R31/40 ,  H02H7/09 ,  H02H11/006 ,  H04L25/028

    Abstract: Embodiments relate to fault detection comparator circuitry and methods that can operate in conjunction with a power-on-reset (POR) scheme to put a chip into a reliable power-down mode upon fault detection to avoid disrupting the communication bus link such that other connected chips and the host can continue to operate. Power-on of the affected chip can then be carried out when the connection with that chip is restored.

    Abstract translation: 实施例涉及故障检测比较器电路和方法，其可以与上电复位（POR）方案一起操作，以便在故障检测时将芯片置于可靠的掉电模式，以避免中断通信总线链路，使得其他连接 芯片和主机可以继续运行。 当与该芯片的连接恢复时，可以执行受影响的芯片的电源接通。

    Automatic voltage device and network protector incorporating same
    3.
    发明授权
    Automatic voltage device and network protector incorporating same 有权
    自动电压装置和网络保护器

    公开(公告)号：US07149067B2

    公开(公告)日：2006-12-12

    申请号：US10740187

    申请日：2003-12-18

    Applicant: Mark A. Faulkner ,  Ronald T. Zipagan

    Inventor： Mark A. Faulkner ,  Ronald T. Zipagan

    IPC: H02H3/20

    CPC classification number: H02H11/007

    Abstract: A voltage sensing device automatically scales the source and network phase voltages of a power distribution system having one of two operating voltages for input to a network protector relay and also automatically scales a voltage for operating the trip and close circuit of the circuit breaker in the network protector. A latching tap select relay only switches the system voltages to the lower operating voltage input taps of step down transformers after a short delay if all the system voltages are in the lower operating range. A diagnostic circuit verifies proper switch position and voltages before closing output contacts to connect the scaled voltages to the relay and circuit breaker.

    Abstract translation: 电压感测装置自动缩放具有用于输入到网络保护器继电器的两个工作电压之一的配电系统的源极和网络相电压，并且还自动缩放用于操作网络中的断路器的跳闸和闭合电路的电压 保护者 如果所有系统电压处于较低的工作范围，锁存抽头选择继电器只能在短时延后将系统电压切换到降压变压器的较低工作电压输入抽头。 诊断电路在闭合输出触点之前验证正确的开关位置和电压，以将定标电压连接到继电器和断路器。

    Electronic ballast with overvoltage monitoring
    4.
    发明授权
    Electronic ballast with overvoltage monitoring 失效
    电子镇流器具有过压监控功能

    公开(公告)号：US07067994B2

    公开(公告)日：2006-06-27

    申请号：US10870063

    申请日：2004-06-18

    Applicant: Christian Soehnel

    Inventor： Christian Soehnel

    IPC: H05B37/02 ,  H01J1/60

    CPC classification number: H05B41/2853 ,  H02H11/007

    Abstract: An electronic ballast for at least one gas discharge lamp (LA), preferably for a fluorescent tube, having a rectifier circuit (2) connectable to a supply voltage source, a smoothing circuit (3) connected to the output of the rectifier circuit (2) for generating an intermediate circuit voltage (UZ), and an inverter (4), fed with the intermediate circuit voltage (UZ), to the output of which a terminal for the load circuit (5) containing the lamp (LA) is connected, and an overvoltage monitoring device which monitors the supply voltage (U0) delivered to the electronic ballast, whereby in the event that the supply voltage exceeds a predetermined nominal value (Ui,max), an optically or acoustically perceptible warning signal is issued.

    Abstract translation: 一种用于至少一个气体放电灯（LA）的电子镇流器，优选地用于荧光管，具有可连接到电源电压源的整流器电路（2），连接到整流器电路（2）的输出端的平滑电路（3） ）和用于产生中间电路电压（UZ）的逆变器（4）和馈送有中间电路电压（UZ）的反相器（4）连接到其中包含灯（LA）的负载电路（5）的端子被连接 以及监视输送到电子镇流器的电源电压（U 0）的过电压监视装置，由此在电源电压超过预定标称值（Ui，max）的情况下，发出光学或声学上可察觉的警告信号。

    Automatic voltage device and network protector incorporating same
    5.
    发明申请
    Automatic voltage device and network protector incorporating same 有权
    自动电压装置和网络保护器

    公开(公告)号：US20050135032A1

    公开(公告)日：2005-06-23

    申请号：US10740187

    申请日：2003-12-18

    Applicant: Mark Faulkner ,  Ronald Zipagan

    Inventor： Mark Faulkner ,  Ronald Zipagan

    IPC: H02H11/00 ,  H02H3/20

    CPC classification number: H02H11/007

    Abstract: A voltage sensing device automatically scales the source and network phase voltages of a power distribution system having one of two operating voltages for input to a network protector relay and also automatically scales a voltage for operating the trip and close circuit of the circuit breaker in the network protector. A latching tap select relay only switches the system voltages to the lower operating voltage input taps of step down transformers after a short delay if all the system voltages are in the lower operating range. A diagnostic circuit verifies proper switch position and voltages before closing output contacts to connect the scaled voltages to the relay and circuit breaker.

    Abstract translation: 电压感测装置自动缩放具有用于输入到网络保护器继电器的两个工作电压之一的配电系统的源极和网络相电压，并且还自动缩放用于操作网络中的断路器的跳闸和闭合电路的电压 保护者 如果所有系统电压处于较低的工作范围，锁存抽头选择继电器只能在短时延后将系统电压切换到降压变压器的较低工作电压输入抽头。 诊断电路在闭合输出触点之前验证正确的开关位置和电压，以将定标电压连接到继电器和断路器。

    Hard disk drive (HDD) electrical over voltage stress (EOS) systems and methods
    6.
    发明申请
    Hard disk drive (HDD) electrical over voltage stress (EOS) systems and methods 审中-公开

    公开(公告)号：US20040070905A1

    公开(公告)日：2004-04-15

    申请号：US10449240

    申请日：2003-05-30

    Inventor： James E. Chloupek ,  Robert E. Whyte JR.

    IPC: H02H009/04

    CPC classification number: H02H11/007 ,  H02H9/04

    Abstract: The present invention relates to a hard disk drive system having overvoltage protection circuits for various types of overvoltage conditions. For example, the system comprises one or more hard disk drive integrated circuit chips residing on a board and a hard disk drive power plug receptacle residing on the board having two different value power supply ports associated therewith. The receptacle is operable to receive a power plug therein, wherein when the power plug is inserted therein in a proper orientation the two different value voltages are properly supplied to the one or more hard disk drive integrated circuit chips, and wherein when the power plug is inserted therein in an improper orientation the two different value voltages are switched with respect to their intended values. The system comprises a reverse power plug orientation protection circuit coupled between the hard disk drive power plug receptacle and at least one of the one or more hard disk drive integrated circuit chips. The protection circuit is operable to detect an improper orientation of the power plug when inserted into the hard disk drive power plug receptacle and reduce a larger of the two different voltage values, thereby preventing an electrical over voltage stress of the at least one hard disk drive integrated circuit chip.

    Image forming apparatus utilizing an AC voltage control circuit
    7.
    发明授权
    Image forming apparatus utilizing an AC voltage control circuit 失效
    使用交流电压控制电路的图像形成装置

    公开(公告)号：US5229577A

    公开(公告)日：1993-07-20

    申请号：US564327

    申请日：1990-08-08

    Applicant: Tomoyuki Matsuura ,  Hideki Furuta

    Inventor： Tomoyuki Matsuura ,  Hideki Furuta

    IPC: G05F1/14 ,  B41J29/38 ,  G03G15/00 ,  G03G15/20 ,  G05F5/00 ,  H02H11/00

    CPC classification number: G03G15/80 ,  B41J29/38 ,  G03G15/2003 ,  H02H11/007

    Abstract: An image forming apparatus having a built in AC voltage control circuit which enables the apparatus to be used in regions of the world having commercial power supplies with different supply voltages. The AC voltage control circuit first compares the input voltage to a reference voltage and then performs a switching operation to ensure that the voltage supplied to the AC electric components of the image forming apparatus is the voltage necessary for operation of those components.

    Abstract translation: 一种具有内置AC电压控制电路的图像形成装置，其使得该装置能够在具有不同电源电压的商用电源的世界地区中使用。 AC电压控制电路首先将输入电压与参考电压进行比较，然后进行开关动作，以确保提供给图像形成装置的AC电气部件的电压为这些部件的运转所需的电压。

    Method and device for controlling at least one circuit breaker of a power system
    9.
    发明授权
    Method and device for controlling at least one circuit breaker of a power system 有权

    公开(公告)号：US11757282B2

    公开(公告)日：2023-09-12

    申请号：US17278802

    申请日：2019-09-24

    Applicant: Hitachi Energy Switzerland AG

    Inventor： Michael Stanek ,  Soumya Kanta

    IPC: H02H3/06 ,  H02H11/00 ,  G01R19/00 ,  H02H3/44

    CPC classification number: H02H11/007 ,  G01R19/003 ,  H02H3/066 ,  H02H3/44

    Abstract: A power system comprises a power source, a transmission line coupled to the power source through a circuit breaker, a shunt reactor coupled to the transmission line, and a current transformer connected in series with the shunt reactor. A method for controlling the circuit breaker of the power system comprises processing an output signal of the current transformer to obtain the voltage on the transmission line by determining a time derivative of a current sensed by the current transformer. The method further comprises performing, by at least one control or protection device, a control or protection operation (e.g., auto-reclosing) based on the determined time derivative of the current sensed by the current transformer.

    VOLTAGE DETECTION APPARATUS AND IMAGE FORMING APPARATUS
    10.
    发明申请
    VOLTAGE DETECTION APPARATUS AND IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20180149999A1

    公开(公告)日：2018-05-31

    申请号：US15815152

    申请日：2017-11-16

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Yusuke Isomi ,  Masatoshi Itoh

    IPC: G03G15/00 ,  H02H11/00

    CPC classification number: G03G15/1675 ,  G03G15/5004 ,  G03G15/80 ,  H02H11/007

    Abstract: The voltage detection apparatus includes a transformer, in which a primary side and a secondary side are insulated from each other and the primary side connected in parallel with a first line and a second line, configured to output from the secondary side a voltage supplied to the primary side according to an alternating voltage; a detection circuit configured to detect a frequency of an alternating voltage; and a correction unit configured to acquire information corresponding to a voltage output from the transformer and information corresponding to a frequency detected by the detection circuit, and that corrects the information corresponding to the voltage according to the information corresponding to the frequency.

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