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| Number | Title | Issue Date |
| 8174267 | Intermittent microwave energy delivery system An intermittent microwave energy delivery system for use in testing microwave energy systems and devices and for use in performing medical procedures including a microwave energy source configured to provide a continuous microwave energy signal, an energy delivery n... | 05/08/2012 |
| 8134370 | Semiconductor device and method of controlling electrostatic actuator A semiconductor device controls an electrostatic actuator having first and second electrodes. A voltage generation unit generates different types of voltages applied to the first and second electrodes. A control unit controls voltages generated by the voltage genera... | 03/13/2012 |
| 8093901 | Switching unit adapted for communicating with a processing unit An intelligent switching unit to be connected with a processing unit is disclosed. The intelligent switching unit includes a switching unit to be actuated by a user, a detection module connected to the switching unit. The detection module detects a signal outputted ... | 01/10/2012 |
| 8004283 | Method of actuating a test function of an electrical switching apparatus at a panel and electrical switching apparatus employing the same An arc fault circuit breaker includes a panel having a first side and an opposite second side, a housing coupled to the opposite second side of the panel, separable contacts, an operating mechanism structured to open and close the separable contacts, and a trip mech... | 08/23/2011 |
| 7973533 | In-circuit testing for integrity of solid-state switches A switching and fault detection circuit comprises two controllable switches capable of coupling a power source to a load. A controller can control the switches and test them for faults, and a voltage sensor can read the output voltage going to the load. Dual-redunda... | 07/05/2011 |
| 7965084 | Self-monitoring switch Methods and apparatus for switching electrical signals are provided herein. In some embodiments a smart switch is provided, the smart switch may include a switch having a wipe capability; a monitor coupled to the switch for monitoring a performance characteristic th... | 06/21/2011 |
| 7880470 | Switching circuit, signal output device and test apparatus A test apparatus for a device under test (DUT) that includes a signal output device that outputs a signal according to a test signal and a detecting section that detects a signal output from the DUT that outputs a detection result. The signal output device includes ... | 02/01/2011 |
| 7834633 | Monitoring a protective device arranged upstream of a switching device There is described a method and a system for monitoring a protective apparatus, which is connected upstream of a switching device and is connected to the switching device via at least one main current path. The wiring complexity for monitoring of the protective appa... | 11/16/2010 |
| 7816924 | Gas insulated switchgear and method for detecting arc damage in a gas insulated switchgear part The invention provides a gas insulated switchgear, and a method for detecting arc damage in a part used in a gas insulated switchgear, which detect directly when an electric contact or a peripheral part reaches an initially set wear limit. An insulating nozzle of a ... | 10/19/2010 |
| 7570062 | Method of actuating a test function of an electrical switching apparatus and electrical switching apparatus employing the same An arc fault circuit breaker includes a housing, separable contacts, an operating mechanism adapted to open and close the separable contacts, and an arc fault trip mechanism cooperating with the operating mechanism to trip open the separable contacts. The arc fault ... | 08/04/2009 |
| 7479785 | Control and testing of a micro electromechanical switch A circuit includes a micro electro mechanical switch and a detection circuit. The micro electro mechanical switch has a movable portion positioned to form an electrical connection between a first electrical contact and a second electrical contact in response to an e... | 01/20/2009 |
| 7408357 | Device for detecting contact wear in switching appliances A device for detecting wear of switching contacts in an electric switch appliance is disclosed, the wear of the contacts being caused at least at a pair of switching contacts appliance. The device includes a lightwave guide and a detector. A light exiting from at le... | 08/05/2008 |
| 7405569 | Monitoring system for high-voltage switches A method and an apparatus are disclosed for measuring contact erosion in an electrical switching device by a dynamic resistance measurement (DRM). To determine an overlap time and a contact erosion in an exemplary switching device, a change in current across the swi... | 07/29/2008 |
| 7301246 | Switch for switching off at least one airbag A switch for switching off at least one airbag having two identical sensors for detecting a switching state of the switch is provided, the two identical sensors being connected up in such a way that the electrical characteristic-quantity ranges to be evaluated for d... | 11/27/2007 |
| 7288940 | Galvanically isolated signal conditioning system A galvanically isolated signal conditioning system includes a signal conditioning circuit on an integrated circuit chip; a flying capacitor; and a galvanically isolating MEMS switching device on an integrated circuit chip for selectively switching the flying capacit... | 10/30/2007 |
| 7259565 | Testing an electrical switchgear system There is provided a method of testing an electrical switchgear system. A node in the electrical switchgear system monitors a power line signal and controls a breaker based on the power line signal. The method includes applying an analog signal to the node, and recei... | 08/21/2007 |
| 7256583 | Device and method for testing the seal tightness of a fuel tank system of a motor vehicle A device and method for testing seal tightness of a fuel tank system of a motor vehicle, wherein excess pressure is built up in the fuel tank system by an electrically operated pump and electric current consumption of the pump is compared to reference values in orde... | 08/14/2007 |
| 7253571 | Wireless power supply and method of supplying power A wireless power supply and method of wirelessly supplying power use light to directly supply power wirelessly to an electrical apparatus without a power cable. The wireless power supply includes: a plurality of pressure switches adapted to switch ON/OFF in response... | 08/07/2007 |
| 7239490 | Medium voltage vacuum circuit interrupter An encapsulated medium voltage vacuum circuit interrupter includes a line terminal, a load terminal, a vacuum interrupter, an operating mechanism and an elongated, insulated, generally cylindrical encapsulating housing. The vacuum interrupter includes a vacuum envel... | 07/03/2007 |
| 7219022 | Methods and apparatus for detecting failure of an isolation device Apparatus for detecting failure of an isolation device includes a current sensor to sense current through the isolation device and a circuit responsive to the current sensor output signal and to an enable signal that controls the isolation device for providing an Ea... | 05/15/2007 |
| 7191348 | Transition detection at input of integrated circuit device An integrated circuit has an input connection for connecting an external signal conductor that passes signals to execute functions in the device. The external signal conductor can pick up strong interfering signals with high frequency content, for example when the d... | 03/13/2007 |
| 7161776 | Method for monitoring a power output stage A method for monitoring a power output stage including at least one half bridge with upper and lower semiconductor switches connected in series, wherein the semiconductor switches are controllable alternately to a switched-on state and a switched-off state by pulse-... | 01/09/2007 |
| 7123018 | Switching status determination device and method for determining switching status A sampling voltage is periodically applied between contacts of a switch of a device to determine a status of the switch. When a CPU is in a sleep state and the status of the switch is determined closed, the CPU is activated. The sampling voltage when the CPU is in t... | 10/17/2006 |
| 7116120 | Clamping test fixture for a high frequency miniature probe assembly An oscilloscope probe test fixture provides separate clamps for pressing each probe tip against a location along a transmission line. Multiple adjacent clamps may share a common axle. One clamp is positioned over a ground plane that adjoins the center conductor of a... | 10/03/2006 |
| 7106066 | Micro-electromechanical switch performance enhancement In methods and circuits for using associated circuitry to enhance performance of a micro-electromechanical switch, one of the method embodiments is a contact conditioning process including applying a time-varying voltage to the control element of a closed switch. In... | 09/12/2006 |
| 7095240 | Method of an apparatus for testing wiring A test system employing a plurality of disconnect devices is provided. Each load, such as a lamp, has a local disconnect device which temporarily disconnects the load in order to protect it from high voltage during the test. ... | 08/22/2006 |
| 7079723 | Optical wavelength cross connect architectures using wavelength routing elements An optical wavelength cross connect is provided to receive multiple input optical signals that each have multiple spectral bands and to transmit multiple output optical signals that each have one or more of those spectral bands. The optical wavelength cross connect ... | 07/18/2006 |
| 7053624 | Protective relay test device having a hand-held controller A system for testing a relay is provided. The system includes a plurality of signal generators to generate signals to test relays. The system includes a controller to provide at least some inputs for use by at least one of the signal generators to generate the signa... | 05/30/2006 |
| 7026821 | Testing MEM device array A system of an embodiment of the invention includes an array of micro-electromechanical (MEM) device assemblies and a testing mechanism situated outside of the array of the MEM device assemblies. Each MEM device assembly includes a MEM device capable of being indivi... | 04/11/2006 |
| 7026822 | High voltage switching matrix for electrical safety compliance test equipment A high voltage switching matrix for selectively connecting a plurality of different voltage/current sources or inputs with a plurality of different outputs includes a common or shared relay for each of the voltage/current sources at the voltage/current source inputs... | 04/11/2006 |
| 7023215 | Field effect sensor two wire interconnect method and apparatus A field effect sensor interfaces with a power supply and detection circuit using two wires. The detection circuit can determine which of several parallel-connected field affect sensors is or is not activated at any given time. ... | 04/04/2006 |
| 6969996 | Methods for affirming switched status of MEMS-based devices A configuration is provided by which it may be determined whether a MEMS device is in a select state. The select state is defined by a position of a moveable element, which is moved with electrostatic forces upon activation of an electrode. The select state is detec... | 11/29/2005 |
| 6965238 | Methods and apparatus for analyzing high voltage circuit breakers Methods, computer program segment and apparatus for analyzing high voltage circuit breakers are provided. The method includes determining a circuit breaker contact closing time, determining a circuit breaker contact opening time, and determining a circuit breaker pr... | 11/15/2005 |
| 6963203 | Methods and apparatus for analyzing high voltage circuit breakers A method for analyzing an electrical contact pair is provided. At least one of the contacts is coupled to a line-side of the contact pair, and at least one of the contacts is coupled to a load-side of the contact pair. The method includes electrically coupling the l... | 11/08/2005 |
| 6963202 | Testing interface for railroad signal relays A testing interface provides rapid, temporary connections to individual signal relays used in railroad signal systems when testing is required, and otherwise permits normal operation of railroad signal vital circuits through its connections. A connectivity block pro... | 11/08/2005 |
| 6960918 | Method and apparatus for control and fault detection of a remote electrical motor The present invention provides a system and method to passively monitor the performance of an electrical circuit designed to drive to a remote electric motor, including faults that occur intermittently. The invention is capable of identifying the location and type o... | 11/01/2005 |
| 6940285 | Method and apparatus for testing a micro electromechanical device A system and method for testing performance characteristics of a MEMs device includes an activation driver configured to receive and drive a waveform to an activation side of the micro electromechanical device and configured to provide readback of an activation volt... | 09/06/2005 |
| 6909289 | Electrical high tension tester An electrical high tension test device having first and second contacts connectable to a high tension circuit, a first electrode connected to one contact; a second electrode connected to the second contact, the first and second electrodes being spaced apart from one... | 06/21/2005 |
| 6900641 | Switch testing apparatus An apparatus for testing a switch is provided that permits the performance of a switch to be reliably tested and to precisely determine a host of parameters that collectively define the performance of the switch. The apparatus includes a stage upon which the switch ... | 05/31/2005 |
| 6750655 | Methods for affirming switched status of MEMS-based devices A configuration is provided by which it may be determined whether a MEMS device is in a select state. The select state is defined by a position of a moveable element, which is moved with electrostatic forces upon activation of an electrode. The select state is detec... | 06/15/2004 |
