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| Number | Title | Issue Date |
| 8185332 | Apparatus and method for estimating resistance characteristics of battery based on open circuit voltage estimated by battery voltage variation pattern An apparatus for estimating resistance characteristics of a battery includes a data storing manager for obtaining and storing battery voltage, current and temperature data of a battery, whenever estimating a battery resistance characteristic; an open circuit voltage... | 05/22/2012 |
| 8180585 | Magnetic crash sensor A magnetic field is generated by at least one coil in magnetic communication with at least a portion of a vehicle responsive to a first time-varying signal operatively coupled to the at least one coil in series with a sense resistor. A second signal is generated res... | 05/15/2012 |
| 8175827 | RF probe technique for determining plasma potential An rf probe is placed within a plasma and an rf signal from a network analyzer for a given dc bias voltage Vp is applied The frequency applied by the network analyzer, ω, is less than the plasma frequency, ωpe, and therefore is not in the res... | 05/08/2012 |
| 8155901 | System for remedying electrical power instability A system for real-time monitoring of synchrophasors from an electrical power system serving multiple geographic areas can control system instability, without preset parameters or thresholds, detects power flow between the generation sources. If a change in power flo... | 04/10/2012 |
| 8155903 | Method and circuit arrangement for measuring a capacitance A method of measuring a capacitance, wherein a voltage across the capacitance is supplied to an input of an evaluation circuit that is designed so that it can detect input voltages with a predetermined degree of precision so long as these voltages are in a measureme... | 04/10/2012 |
| 8155902 | Contactor status detection in power inverters A sensor-less technique is described for detecting the status of an AC contactor of a power inverter. In one embodiment, a method is provided of sensing an unexpected condition of an AC contactor used to couple to a power distribution system a power inverter having ... | 04/10/2012 |
| 8145442 | Fast and accurate estimation of gate output loading Embodiments of a computer system, a method, an integrated circuit and a computer-program product (i.e., software) for use with the computer system are described. These devices and techniques may be used to analyze an electrical characteristic of a logic gate electri... | 03/27/2012 |
| 8126667 | Measurement based voltage stability monitoring and control A measurement base voltage stability monitoring and control scheme having a means for measuring current and voltage phasors at a boundary bus of a load center; and an equivalent network having a fictitious bus with an aggregate load representative of all loads of th... | 02/28/2012 |
| 8112236 | Device for accurately measuring amplifier's open-loop gain with digital stimuli A device capable of receiving one or more digital stimulus signals and accurately measuring an open-loop gain of an amplifier comprises: a digital charge converter (DCC), a charge integrator, an A/D converter, a control logic circuit and an arithmetic logic unit (AL... | 02/07/2012 |
| 8108163 | Power supply noise analysis method, apparatus and program for electronic circuit board Disclosed is a method including: calculating power supply input impedance of the LSI from the number of output buffers of the LSI, output impedance of an output buffer, signal characteristic impedance and characteristic impedance of power supply/ground of an LSI ter... | 01/31/2012 |
| 8099250 | Impedance parameter values A method of determining parameter values used in impedance analysis of a subject. The method includes using a processing system to determine a number of impedance measurements at a corresponding number of frequencies. The impedance measurements are used to determine... | 01/17/2012 |
| 8065100 | Method and a system for cable or subscriber loop investigation performing loop topology identification A system and method for using loop topology identification to investigate a transmission line having a plurality of cable segments. At a measurement plane for each segment, a probing signal is transmitted into the cable. A reflected signal is detected, and an equiva... | 11/22/2011 |
| 8036841 | Measuring method and apparatus for potentiometric measuring probes A method and device are disclosed for measuring potentiometric measuring probes. An exemplary method includes feeding two test voltages comprising a harmonic wave Ueg with a base frequency fg and the harmonic wave Uer with a base fre... | 10/11/2011 |
| 8019562 | Method for detecting the loss of one or more phases in a permanent-magnet synchronous electric motor A method implemented in a speed controller to detect a loss of one phase, two phases or three phases in a three-phase permanent-magnet synchronous motor, running or stopped at rest, said controller executing a control in closed loop operation, said method including:... | 09/13/2011 |
| 7996167 | Apparatus and method for estimating resistance characteristics of battery based on open circuit voltage estimated by battery voltage variation pattern An apparatus for estimating resistance characteristics of a battery includes a data storing manager for obtaining and storing battery voltage, current and temperature data of a battery, whenever estimating a battery resistance characteristic; an open circuit voltage... | 08/09/2011 |
| 7996166 | Isolated capacitive signature detection for powered devices In one embodiment, a method for determining capacitive signature validity of a powered device (PD) attached to power sourcing equipment (PSE) having (i) an isolated side with a primary coil and (ii) a line side with a secondary coil connected to the PD. The method i... | 08/09/2011 |
| 7987058 | Self-learning reverse power flow detection A monitoring device to detect an indication of reverse power flow across a monitored transformer. The monitoring device adapted to handle a series of phase angle differences between a monitored current and a monitored voltage and establish a baseline phase angle dif... | 07/26/2011 |
| 7983864 | Method and apparatus for characterising multiphase fluid mixtures A method for determining at least one characteristic of a multiphase fluid including the steps of applying alternating energy of a predetermined amplitude to a portion of a multiphase fluid and measuring the electrical impedance spectrum across the portion of multip... | 07/19/2011 |
| 7979224 | Configurable voltage regulator A configurable semiconductor device includes at least one select pin configured to connect to one of a plurality of impedances. The impedances are external to the configurable semiconductor device and have impedance values within predetermined tolerances. A measurem... | 07/12/2011 |
| 7957922 | Data logger system A data logger system utilizing a censor which obtain a plurality of measurements of an environmental parameter and generates a plurality of signals representing such measurements. A processor receives the plurality of signals and produces a table of counts in sequen... | 06/07/2011 |
| 7865321 | Arcing event detection Methods for detecting electrical arcing on an electrical power system are provided, as well as systems and computer program products for carrying out the method. The method includes the steps of: a) obtaining data indicative of the temporal behavior of a signal whic... | 01/04/2011 |
| 7844410 | Field device electronics fed by an external electrical energy supply The field-device electronics includes an electric current adjuster, through which a supply current flows, driven by a supply voltage provided by the external energy supply and adjusted by the current adjuster. Additionally, the field-device electronics includes an i... | 11/30/2010 |
| 7826989 | Computer-readable medium storing electromagnetic field analysis program, and method of causing computer to perform electromagnetic field analysis In Internal Analysis Space analysis, assuming that no structural body and the like are placed outside of a conversion surface, an electromagnetic field distribution u0 inside of a conversion surface, on a conversion surface, and close to the outside of the co... | 11/02/2010 |
| 7805265 | Method and apparatus for measuring electric circuit parameters A method for measuring electric circuit parameters of a 2-terminal circuit having first and second terminals, includes steps of: terminating one of the first and second terminals with a terminal impedance Z1, to measure reflection characteristics α1 f... | 09/28/2010 |
| 7788053 | Configurable voltage regulator A configurable semiconductor has a device characteristic that is controllable as a function of at least one external impedance. A measurement circuit measures an electrical characteristic of the at least one external impedance and determines a select value correspon... | 08/31/2010 |
| 7778784 | Field device electronics fed by an external electrical energy supply An electric current controller for field-device electronics controls and/or modulates the supply current. The supply current is driven by a supply voltage provided by an external energy supply. The field-device electronics has an internal operating and evaluating ci... | 08/17/2010 |
| 7769552 | Method and apparatus for estimating induction motor rotor temperature A method and apparatus to provide continuous and reliable rotor temperature estimates for line-connected induction motors during steady-state and/or dynamic motor operations. Rotor temperature is calculated from voltage and current measurements without any temperatu... | 08/03/2010 |
| 7761249 | Utility meter having RF protection An arrangement for use in a utility meter includes a first filter stage and a second filter stage. The utility meter has a measurement circuit that includes at least one analog portion susceptible to radio frequency signal interference, the radio frequency signal in... | 07/20/2010 |
| 7747400 | VA metering in polyphase systems An arrangement includes an A/D converter and a processing circuit. The A/D converter is configured to generate digital samples of voltage and current waveforms in a polyphase electrical system. The processing circuit is operably coupled to receive the digital sample... | 06/29/2010 |
| 7720622 | Non-destructive systems, devices, and methods for evaluating iontophoresis drug delivery devices Systems, devices, and methods for evaluating iontophoresis devices. An impedance spectrometer is operable to determine an impedance of an iontophoresis device and a controller configured to perform a comparison of the measured impedance of the iontophoresis device t... | 05/18/2010 |
| 7664612 | Signal processing system and method First and second complementary voltage signals are operatively coupled across a series circuit comprising first and second sense resistors and a circuit element therebetween. An output signal responsive to the self-impedance of the circuit element is generated respo... | 02/16/2010 |
| 7630844 | Field device electronics fed by an external electrical energy supply Field-device electronics including an electric current adjuster, through which a supply current flows is driven by a supply voltage provided by the external energy supply and adjusted by the current adjuster. Additionally, the field-device electronics includes an in... | 12/08/2009 |
| 7630843 | Method, apparatus, and system for power source failure prediction Some embodiments of a method, apparatus, and system for power source failure prediction are described. According to some embodiments, the system may include, among other things, a display device to draw power from a direct current power source, two or more electrica... | 12/08/2009 |
| 7596460 | System and method for calculating a voltage spike value A method for calculating a voltage spike value includes: predefining calculating requirements; inputting parameter values; analyzing whether inputted parameter values match with the calculating requirements; establishing a computing formula for calculating the volta... | 09/29/2009 |
| 7593824 | System and method for automation of hardware signal characterization and signal integrity verification A PCB comprising two or more components, such as ICs, comprises drivers and receivers that facilitate communication of signals between the components. Signal terminations, such as series and AC terminations, are used to increase the integrity of signals transmitted ... | 09/22/2009 |
| 7577536 | Determination of ohmic losses in electrical devices The present invention provides a method for determining voltage loss in an electrical device. The method includes the steps of obtaining an array A of voltage values corresponding to at least one current interrupt measurement at current In, wherein I... | 08/18/2009 |
| 7567875 | Enhanced sonde recognition A detector for locating a sonde is comprised of a plurality of antennas, a corresponding number of signal isolator modules 1 and a geometrical evaluation module. The magnetic signal generated by the sonde has a fundamental frequency and harmonic frequencies. ... | 07/28/2009 |
| 7555394 | Measuring circuit and a method for determining a characteristic of the impedance of a complex impedance element for facilitating characterization of the impedance thereof A single chip integrated circuit measuring circuit (1) for determining a characteristic of the impedance of an external complex impedance circuit (2) for facilitating characterization of the impedance of the complex impedance circuit (2) compris... | 06/30/2009 |
| 7516027 | Configurable voltage regulator A production testing system for testing an integrated circuit comprises a control module that generates a setpoint and a setpoint range. A configurable integrated circuit receives the setpoint and the setpoint range, that has M predetermined configurations, and gene... | 04/07/2009 |
| 7512504 | Testing system using configurable integrated circuit A testing system comprises a configurable integrated circuit that selectively communicates with one or more of N external impedances, that has M predetermined configurations that are selected based on an electrical characteristic of the one or more of the N external... | 03/31/2009 |
