公开(公告)号：US20190074826A1

公开(公告)日：2019-03-07

申请号：US15697381

申请日：2017-09-06

申请人： Alpha and Omega Semiconductor (Cayman) Ltd.

发明人： Son Tran ,  Fred Sawyer

IPC分类号： H03K17/082 ,  H03K17/0814 ,  H02M3/158 ,  H02H3/12 ,  H02H3/20 ,  H02H9/04

摘要： Aspects of the present disclosure disclose a power semiconductor device coupled to a load operable to draw a load current comprising a power switch having a first terminal coupled to the load and a controller coupled to a control terminal of the power switch. The controller comprises a gate driving circuit configured to provide control of the control terminal of the power switch during normal switching operations; an overvoltage detection circuit configured to detect an overvoltage event occurring at the first terminal of the power switch; and an overvoltage protection circuit configured to provide control of the control terminal of the power switch during detection of the overvoltage event.

公开(公告)号：US10132875B1

公开(公告)日：2018-11-20

申请号：US14262267

申请日：2014-04-25

申请人： Michael L. McAnelly ,  Jeremy S. Davey ,  Randall P. Robert ,  Donald J. Norris ,  Robert P. Bayly

发明人： Michael L. McAnelly ,  Jeremy S. Davey ,  Randall P. Robert ,  Donald J. Norris ,  Robert P. Bayly

IPC分类号： H02H3/12 ,  G01R31/40 ,  H02H9/00 ,  H02H1/00

摘要： A high accuracy open phase detection system for power transformers that uses a combination of logic controllers and current transformers to recognize an open phase condition experienced by the power transformers under no load, light load, and full load conditions. A current to voltage and current to current transformer on each phase are employed to detect the excitation current and load current conditions. During an open phase condition, a microprocessor detecting device, connected to the current to voltage and current to current transformers, monitors the appropriate power system quantities to determine the existence of one or more open phase(s) with or without a ground or an open phase with line charging capacitance. Through the microprocessor monitor, the microprocessor detecting device can alert operators to the loss of phase or abnormal conditions in the power source. The data used by the microprocessors can be used to calculate the magnitude and phase angle of the current in the power source and detect abnormal system conditions. This invention also employs a unique circuitry configuration to reduce the effects of ambient noise on the open phase detection system.

公开(公告)号：US20170302065A1

公开(公告)日：2017-10-19

申请号：US15484995

申请日：2017-04-11

申请人： Sweep Energy

发明人： Agustin ROLDAN

IPC分类号： H02H3/12 ,  G01R21/133 ,  G01R22/06 ,  G01R22/10 ,  G06Q50/06 ,  H02H1/00

CPC分类号： H02H3/12 ,  G01R15/186 ,  G01R21/1331 ,  G01R22/063 ,  G01R22/068 ,  G01R22/10 ,  G06Q50/06 ,  H02H1/0007

摘要： This disclosure describes a miniaturized energy-monitoring device that can be powered through an Internet port, which also facilitates the programming the device and transmitting energy consumption data to a remote device for recording and analyzing.

公开(公告)号：US20160064916A1

公开(公告)日：2016-03-03

申请号：US14837534

申请日：2015-08-27

申请人： Seiko Instruments Inc.

发明人： Masakazu SUGIURA ,  Atsushi IGARASHI ,  Nao OTSUKA

IPC分类号： H02H3/08 ,  H02H3/12

CPC分类号： H02H3/08 ,  H02H3/12

摘要： Provided is a semiconductor device including a detection circuit in which, even when a load short-circuit detection circuit and a load open-circuit detection circuit perform false detection due to a fluctuation in power supply voltage and the like, an output of a false detection result can be prevented. The detection circuit includes the load short-circuit detection circuit configured to detect a short circuit of a load, the load open-circuit detection circuit configured to detect an open circuit of the load, and a logic circuit configured to output output signals of the load short-circuit detection circuit and the load open-circuit detection circuit to an output terminal of the logic circuit, in which the logic circuit outputs a signal of a non-detection logic to the output terminal when the outputs of the load open-circuit detection circuit and the load short-circuit detection circuit are detection logics.

摘要翻译： 提供了一种包括检测电路的半导体器件，其中即使当负载短路检测电路和负载开路检测电路由于电源电压等的波动而进行错误检测时，也可以输出错误检测 结果可以防止。 检测电路包括：负载短路检测电路，被配置为检测负载的短路;负载开路检测电路，被配置为检测负载的开路;以及逻辑电路，被配置为输出负载的输出信号 短路检测电路和负载开路检测电路连接到逻辑电路的输出端，逻辑电路在负载开路检测的输出端向输出端输出非检测逻辑信号 电路和负载短路检测电路都是检测逻辑。

公开(公告)号：US08976495B2

公开(公告)日：2015-03-10

申请号：US13414961

申请日：2012-03-08

申请人： Wolfgang Boll ,  Markus Eilers

发明人： Wolfgang Boll ,  Markus Eilers

IPC分类号： H02H3/12 ,  H01H47/00 ,  H02H3/16

CPC分类号： H01H47/002 ,  H02H3/12 ,  H02H3/16

摘要： A safety-related communication system includes a safety relay with signal inputs of an input signal current circuit that connect the safety relay to a control device for monitoring the input signal circuit. The safety relay also includes at least two load outputs of a load current circuit for connecting to a load. Switching elements are connected in parallel and configured to switch the load current circuit on or off based on an activation signal at the input signal current circuit. A diagnostic device monitors faults in the load current circuit and/or the safety relay. A signaling device connected to the signal inputs provides an impedance for the input signal circuit. The impedance is tuned to the control device during a fault-free state and is detunable upon detection of a fault so as to signal the detected fault to the control device via the input signal current circuit.

摘要翻译： 一种与安全相关的通信系统包括具有输入信号电流电路的信号输入的安全继电器，其将安全继电器连接到用于监测输入信号电路的控制装置。 安全继电器还包括用于连接到负载的负载电流电路的至少两个负载输出。 开关元件并联并且被配置为基于输入信号电流电路处的激活信号来打开或关闭负载电流电路。 诊断装置监视负载电流电路和/或安全继电器中的故障。 连接到信号输入端的信号装置为输入信号电路提供阻抗。 在无故障状态期间阻抗被调谐到控制装置，并且在检测到故障时不可靠，以便经由输入信号电流电路将检测到的故障发信号给控制装置。

公开(公告)号：US20150029628A1

公开(公告)日：2015-01-29

申请号：US14341926

申请日：2014-07-28

申请人： Sanken Electric Co., LTD.

发明人： Osamu Ohtake

IPC分类号： H02H3/027 ,  H02H3/26 ,  H02H3/12

CPC分类号： H02H3/027 ,  G05D25/02 ,  H02H3/12 ,  H02H3/26 ,  H05B33/0818 ,  H05B33/0884 ,  Y02B20/341

摘要： A low current protection circuit is configured to detect a lowering of a load current flowing a load to perform a low current protection operation and includes: a load current detection configured to detect a load current; a low current detection configured to detect a lowering of the load current by comparing the load current detected by the load current detection unit and a preset reference value; a protection unit configured to perform the low current protection operation when the lowering of the load current is detected by the low current detection unit; and a masking unit configured to mask the low current protection operation of the protection unit from when the lowering of the load current is detected by the low current detection unit to when a masking time period depending on a duty ratio of the external pulse signal elapses.

摘要翻译： 低电流保护电路被配置为检测流过负载的负载电流的降低以执行低电流保护操作，并且包括：负载电流检测，被配置为检测负载电流; 低电流检测，被配置为通过比较由负载电流检测单元检测的负载电流和预设的参考值来检测负载电流的降低; 保护单元，被配置为当由所述低电流检测单元检测到所述负载电流的下降时，执行所述低电流保护操作; 以及掩蔽单元，其被配置为掩蔽所述保护单元的低电流保护操作，以便当由所述低电流检测单元检测到所述负载电流的下降时，到当取决于所述外部脉冲信号的占空比的掩蔽时间周期时。

公开(公告)号：US07551416B2

公开(公告)日：2009-06-23

申请号：US11217366

申请日：2005-09-02

申请人： Ching-Ling Chou

发明人： Ching-Ling Chou

IPC分类号： H02H3/00 ,  H02H3/12

CPC分类号： H02H3/042 ,  G06F1/28

摘要： A power supply equipped with an independent overload protection mechanism includes a control circuit and a transformation circuit that form multiple sets of combination circuits for transforming AC power to DC power. Each control circuit is connected to a protection circuit which monitors overload operation conditions of an electronic device. In the event that an overload condition occurs, the protection circuit outputs an individual protection signal to the control circuit to stop or suspend power output on a DC power cord so that the electronic device at the rear end is not driven. Hence an independent overload protection can be achieved.

摘要翻译： 具有独立过载保护机构的电源包括控制电路和变换电路，其形成用于将AC电力变换为DC电力的多组组合电路。 每个控制电路连接到监视电子设备的过载操作条件的保护电路。 在发生过载状态的情况下，保护电路向控制电路输出单独的保护信号，以停止或暂停直流电源线上的电力输出，使后端的电子设备不被驱动。 因此，可以实现独立的过载保护。

公开(公告)号：US20080284253A1

公开(公告)日：2008-11-20

申请号：US10522117

申请日：2003-07-17

申请人： Willem Herman Stenfert Kroese ,  Maximus Andreas Hillhorst

发明人： Willem Herman Stenfert Kroese ,  Maximus Andreas Hillhorst

IPC分类号： H02H3/12

CPC分类号： H02H3/12 ,  Y10T307/865

摘要： A switching unit for connecting a load to a mains as a function of a demand for a consumption current by the load comprises a mains port for electrically connecting the switching unit to the mains, a load port for electrically connecting the switching unit to the load, a switching element for producing a substantially conductive electrical connection between the mains port and the load port in its closed state and substantially breaking the said electrical connection in its open state. Furthermore, the switching unit comprises current measuring means for measuring a consumption current consumed by the load, and the control means, which are connected to the switching element, are designed to bring the switching element into the open and closed states on the basis of a consumption current measured by means of the current measuring means in an at least temporarily closed state of the switching element. Furthermore, the invention comprises a method for connecting the load to a mains as a function of the demand of a load for a consumption current.

摘要翻译： 用于根据负载对消耗电流的需求将负载连接到电源的开关单元包括用于将开关单元电连接到电源的电源端口，用于将开关单元电连接到负载的负载端口， 开关元件，用于在其关闭状态下在电源端口和负载端口之间产生基本上导电的电连接，并在其打开状态下基本上断开所述电连接。 此外，开关单元包括用于测量负载消耗的消耗电流的电流测量装置，并且连接到开关元件的控制装置被设计成基于开关元件将开关元件置于开和关状态 通过电流测量装置在开关元件的至少暂时关闭状态下测量的消耗电流。 此外，本发明包括一种用于根据负载对消耗电流的需求将负载连接到电源的方法。

公开(公告)号：US6117126A

公开(公告)日：2000-09-12

申请号：US919609

申请日：1997-08-28

申请人： Peter Francis Appelbaum ,  John Alan Ritter

发明人： Peter Francis Appelbaum ,  John Alan Ritter

IPC分类号： A61B17/00 ,  A61B17/32 ,  A61B18/00 ,  A61B18/14 ,  A61B19/00 ,  A61B19/02 ,  A61F9/00 ,  A61F9/007 ,  A61G12/00 ,  A61M1/00 ,  G06F19/00 ,  G08C19/28 ,  H02H3/12

CPC分类号： A61F9/00736 ,  A61B17/00 ,  A61B50/10 ,  A61B50/13 ,  A61B50/15 ,  A61B90/36 ,  A61F9/00745 ,  A61F9/00763 ,  G06F19/3406 ,  G08C19/28 ,  H02H3/12 ,  A61B17/3201 ,  A61B18/00 ,  A61B18/14 ,  A61B2017/00017 ,  A61B2017/0003 ,  A61B2017/00057 ,  A61B2017/00154 ,  A61B2017/00185 ,  A61B2017/0019 ,  A61B2017/00199 ,  A61B2017/00482 ,  A61B2017/00544 ,  A61B2017/00973 ,  A61B2017/00977 ,  A61B2050/155 ,  A61B2050/185 ,  A61B2090/3614 ,  A61B2217/005 ,  A61B2217/007 ,  A61B50/20 ,  A61B90/30 ,  A61F9/00 ,  A61G12/001 ,  A61M2205/505 ,  H01H2003/008 ,  H01H2300/04

摘要： A system for controlling a plurality of ophthalmic microsurgical instruments connected thereto. The microsurgical instruments are for use by a user such as a surgeon in performing ophthalmic surgical procedures. The system includes a data communications bus and a user interface connected to the data communications bus. The user interface provides information to the user and receives information from the user which is representative of operating parameters of the microsurgical instruments. The system also includes surgical modules connected to and controlling the microsurgical instruments as a function of at least one of the operating parameters. The surgical modules are also connected to the data communications bus. The data communications bus provides communication of data representative of the operating parameters between the user interface and the surgical modules. Other features are also disclosed including a main control, an endo-illuminator system, a phacoemulsification handpiece, surgical scissors, a vitrectomy cutter, a surgical foot control, a remote control, a cart.

摘要翻译： 一种用于控制与其连接的多个眼科显微外科器械的系统。 显微手术器械由外科医生等使用者进行眼科手术。 该系统包括数据通信总线和连接到数据通信总线的用户接口。 用户界面向用户提供信息并从用户接收代表显​​微外科器械的操作参数的信息。 该系统还包括作为至少一个操作参数的函数的连接到和控制显微外科器械的手术模块。 手术模块也连接到数据通信总线。 数据通信总线提供表示用户界面和外科手术模块之间的操作参数的数据的通信。 还公开了其它特征，包括主控制器，内窥镜系统，超声乳化手术器具，手术剪刀，玻璃体切割切割器，手术足部控制器，遥控器，推车。

公开(公告)号：US5962932A

公开(公告)日：1999-10-05

申请号：US935291

申请日：1997-09-22

申请人： Darryl Matlo

发明人： Darryl Matlo

IPC分类号： G01R19/15 ,  H02H3/04 ,  H02H3/12 ,  H02H11/00 ,  H01H35/00

CPC分类号： H02H3/04 ,  G01R19/15 ,  H02H11/002 ,  H02H3/12 ,  Y10T307/826 ,  Y10T307/832

摘要： A power supply apparatus 10 with circuit load sensor provides an extension cord 20 having first and second ends extending from an enclosure 30. Within the enclosure, a power supply indicator circuit 40 lights an LED in response to the plug of the extension cord being inserted into a live outlet. Also within the enclosure, a power consumption indicator circuit 60 lights an LED in response to consumption of power by a load plugged into the socket of the extension cord. A nominal voltage drop across a TRIAC 70, carried in-line with the neutral conductor within the enclosure, triggers the power consumption indicator circuit when the load draws current.

摘要翻译： 具有电路负载传感器的电源装置10提供具有从外壳30延伸的第一和第二端的延伸线20.在外壳内，电源指示器电路40响应于延伸线的插头被插入 一个活的插座。 另外在机壳内，功耗指示电路60响应于插入到延长线的插座中的负载的功率消耗而点亮LED。 在负载牵引电流时，与内部中性导体串联的TRIAC 70上的额定电压降触发了功耗指示器电路。