| Patents for G01R 25 - Arrangements for measuring phase angle between a voltage and a current or between voltages or currents (2,594) |
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| 09/27/2007 | WO2005109641A3 Method and apparatus for phase-independent predictable resetting |
| 09/27/2007 | US20070225927 Method and an apparatus for measuring noise |
| 09/25/2007 | US7275003 Harmonic diagnosing method for electric facility |
| 09/25/2007 | US7274997 Method of measuring discrete, incremental feedback from motion devices |
| 09/20/2007 | WO2005041553A3 Fixed filter assembly for proof of performance testing on catv systems |
| 09/20/2007 | US20070216395 Method and Circuit Arrangement for the Self-Testing of a Reference Voltage in Electronic Components |
| 09/18/2007 | US7272521 Measurement of phase nonlinearity of non-linear devices |
| 09/18/2007 | US7271622 Quadrature voltage controlled oscillators with phase shift detector |
| 09/18/2007 | US7271621 Method and apparatus for trimming a phase detector in a delay-locked-loop |
| 09/12/2007 | CN101034870A Digital phase discrimination based on frequency sampling |
| 09/05/2007 | CN101031805A 相位差测定电路 Phase difference measuring circuit |
| 09/04/2007 | US7266485 Method for making equivalent circuit model of passive element, simulator, and storage medium |
| 08/28/2007 | US7261962 Variable fuel cell power system for generating electrical power |
| 08/15/2007 | EP1819021A2 Method and device for monitoring polyphase lines and for detecting phase losses based on the phase angle between phase-to-phase voltages |
| 08/02/2007 | DE19734087B4 Auswerteschaltung mit Phasenbestimmung für ortsempfindliche Detektoren Evaluation phase determination for position-sensitive detectors |
| 08/01/2007 | CN101009430A Apparatus, method and computer program product for tracking information in an electric grid |
| 08/01/2007 | CN101008660A Glue-injection techniques method of phase sensor |
| 07/31/2007 | US7251574 Measuring bit error rate of radio frequency transceivers |
| 07/19/2007 | US20070168141 Method for measuring the operating state of a synchronous motor using composite power angle meter |
| 07/12/2007 | WO2007077686A1 Measuring device, measuring method and testing device |
| 07/12/2007 | WO2007029149A3 Phase detector system |
| 07/11/2007 | CN1997900A Method and device for detecting the wiring phase of an arbitrary unknown phase voltage relative to a reference phase voltage |
| 07/10/2007 | US7242175 Determining rotation of a freewheeling motor |
| 07/05/2007 | US20070152715 Locked loop circuit for improving locking speed and clock locking method using the same |
| 06/27/2007 | CN1987493A Cable identifying method and cable identifying instrument |
| 06/26/2007 | US7236898 System and method for calculating real-time voltage stability risk index in power system using time series data |
| 06/21/2007 | DE102005060366A1 Verfahren und Vorrichtung zum Bestimmen einer Phasenabweichung Method and apparatus for determining a phase deviation |
| 06/20/2007 | CN1322673C Integrated circuit,method and apparatus for fine tuning clock signals of an integrated circuit |
| 06/13/2007 | CN1979182A Dual logarithmic amplifier phase-magnitude detector |
| 06/06/2007 | CN2909277Y Adoptic PMU satellite synchronous clock time keeping device |
| 06/05/2007 | US7228244 Method and apparatus for direction-of-arrival tracking and their application to beamforming at base-station |
| 06/05/2007 | US7227386 Phase locked loop lock-detection circuit |
| 06/05/2007 | US7227346 Two channel digital phase detector |
| 05/29/2007 | US7225090 Method for measuring capacitance and equivalent parallel resistance |
| 05/24/2007 | US20070118317 System and method for generating triggers based on predetermined trigger waveform and a measurement signal |
| 05/22/2007 | US7222042 System and method of measuring turn-on and turn-off times of an optoelectronic device |
| 05/22/2007 | US7222036 Method for providing PVT compensation |
| 05/22/2007 | US7221140 Circuit, method and system for providing one or more phase voltages from input voltages |
| 05/17/2007 | US20070112532 Method of crossover region phase correction when summing signals in multiple frequency bands |
| 05/15/2007 | US7219027 Operation monitor device for hardware component |
| 05/15/2007 | US7218697 Digital phase detector for periodically alternating signals |
| 05/03/2007 | US20070096714 Electricians phase tester |
| 05/02/2007 | CN1955745A Phase measuring method in on-line monitoring of high-voltage electric equipment |
| 05/01/2007 | US7212051 Control signal generation for a low jitter switched-capacitor frequency synthesizer |
| 04/25/2007 | CN2893720Y Phase angle monitoring instrument |
| 04/19/2007 | US20070088515 Carrier phase independent symbol timing recovery methods for vsb receivers |
| 04/19/2007 | US20070085526 Unbalanced current detection |
| 04/18/2007 | CN1948980A Remote short circuit multi-phase detecting method and detecting device thereof |
| 04/17/2007 | US7205756 Unbalanced current detection |
| 04/10/2007 | US7203610 System and method of obtaining data-dependent jitter (DDJ) estimates from measured signal data |
| 04/10/2007 | US7203609 Magnetic field generating apparatus and magnetic field controlling method |
| 04/10/2007 | US7202707 High frequency binary phase detector |
| 04/05/2007 | WO2007038777A2 Carrier phase independent symbol timing recovery methods for vsb receivers |
| 04/05/2007 | WO2007037340A1 Phase difference measuring device and phase comparison circuit adjusting method |
| 04/04/2007 | EP1704384B1 Digital phase detector for periodically alternating signals |
| 04/03/2007 | US7200502 Dual connection power line parameter analysis method and system |
| 03/28/2007 | CN1936607A Wide-area power-angle monitoring method in electric net wide-area measuring system (WAMS) |
| 03/28/2007 | CN1936606A Apparatus for measuring entrance phase position of Tokamak low-noise-wave antenna array and phase-appraising method |
| 03/22/2007 | DE102005044194A1 Method of measuring the relative phases between a periodic digital test signal and a periodic digital reference signal |
| 03/20/2007 | US7193407 Test apparatus and testing method |
| 03/15/2007 | WO2007029149A2 Phase detector system |
| 03/13/2007 | US7190155 Test apparatus and testing method |
| 03/01/2007 | WO2007025232A2 System and method for improving time domain processed sensor signal output |
| 03/01/2007 | US20070046278 System and method for improving time domain processed sensor signals |
| 02/28/2007 | EP1756594A1 Method and apparatus for detecting the wiring phase of an arbitrary unknown phase voltage relative to a reference phase voltage |
| 02/28/2007 | CN1920582A Phase detector and related phase detecting method thereof |
| 02/20/2007 | US7180729 Arrangement for controlling and monitoring a switchgear assembly |
| 02/20/2007 | US7180340 Frequency multiplier capable of adjusting duty cycle of a clock and method used therein |
| 02/15/2007 | US20070035289 Test apparatus and testing method |
| 02/13/2007 | US7177772 System and method for generating and measuring noise parameters |
| 02/08/2007 | US20070032971 Method and system for determining noise components of an analog-to-digital converter |
| 02/01/2007 | US20070027647 Method and apparatus for measuring delay time |
| 01/31/2007 | CN1904623A Performance test method of synchronous phasor measuring device and test system |
| 01/25/2007 | DE112005000267T5 Gerät, Verfahren, Programm und Speichermedium zur Phasenmessung Device, method, program, and storage medium for phase measurement |
| 01/18/2007 | WO2006129061A3 Phase difference calculator |
| 01/17/2007 | CN2859551Y Intellectual power cable phase detecting instrument |
| 01/11/2007 | US20070007945 Automatic non-linear phase response calibration and compensation for a power measurement device |
| 01/09/2007 | US7161391 Skew tolerant high-speed digital phase detector |
| 01/04/2007 | WO2006017368A3 An enhanced phase and frequency detector that improves performance in the presence of a failing clock |
| 12/26/2006 | US7155354 Apparatus for and methods of analyzing the spectral signature of a dynamic event |
| 12/26/2006 | US7154943 Method and circuit of digital measurement of the phase of a sinusoidal signal |
| 12/26/2006 | US7154304 Enhanced phase and frequency detector that improves performance in the presence of a failing clock |
| 12/07/2006 | WO2006129061A2 Phase difference calculator |
| 12/07/2006 | US20060276982 Measuring circuit and a method for determining a characteristic of the impedance of a complex impedance element for facilitating characterization of the impedance thereof |
| 12/07/2006 | CA2611302A1 Phase difference calculator |
| 12/06/2006 | EP1611583B1 Circuit for use in frequency or phase detector |
| 11/30/2006 | US20060267572 Radio frequency identification label and method of labeling |
| 11/30/2006 | US20060267571 Pulse generator, timing generator, and pulse width adjusting method |
| 11/28/2006 | US7141960 Method and device system for testing electrical components |
| 11/23/2006 | US20060265158 Apparatus employing predictive failure analysis based on in-circuit FET on-resistance characteristics |
| 11/22/2006 | EP0727670B1 Phase difference measuring circuit |
| 11/14/2006 | US7136764 Variable gain amplifier circuit |
| 11/14/2006 | US7134290 Phase correction method and apparatus |
| 10/31/2006 | US7129757 Clock frequency detect with programmable jitter tolerance |
| 10/24/2006 | US7126324 Precision digital phase meter |
| 10/18/2006 | CN1849517A Method and apparatus for measuring impedance of electrical component under high interference conditions |
| 10/10/2006 | US7120555 Signal statistics determination |
| 10/10/2006 | US7119583 Phase detector and method having hysteresis characteristics |
| 10/10/2006 | US7119582 Phase detection in a sync pulse generator |
| 10/05/2006 | WO2006049796A3 Communicating with an implanted wireless sensor |