| Patents for G01R 25 - Arrangements for measuring phase angle between a voltage and a current or between voltages or currents (2,594) |
|---|
| 02/07/2013 | US20130035887 Method and system of phase identification |
| 02/06/2013 | CN202720273U High-precision phase difference detection device |
| 02/06/2013 | CN102156261B Device and method for predicating angle on basis of high-order state information of generator |
| 02/06/2013 | CN102072988B Access point voltage phase detection method of photovoltaic inverter by applying multiple zero-crossing points |
| 02/06/2013 | CN101931219B Phase deviation based auto-disturbance rejection isolated island detecting method |
| 02/05/2013 | CA2543581C Digital phase detector for periodically alternating signals |
| 02/03/2013 | CA2783902A1 Method and system of phase identification |
| 02/02/2013 | CA2783987A1 Method and system of a timer based buffer used for metrology |
| 01/31/2013 | US20130030731 Alternating-current electric quantity measuring apparatus and alternating-current electric quantity measuring method |
| 01/31/2013 | US20130027086 Charge pump |
| 01/30/2013 | EP2550742A1 A phase detector |
| 01/30/2013 | CN102904844A Phase detection module and detection method thereof |
| 01/30/2013 | CN102901876A Method for measuring inter-modulation spectral lines by using network analyzer based on multi-voice excited step recovery diode (SRD) pulse generator |
| 01/30/2013 | CN102901875A Distribution line heat changeover auxiliary device |
| 01/30/2013 | CN102901874A Phase- and time mark measurement-based electronic transformer absolute delay detection method |
| 01/30/2013 | CN102901873A Device for measuring resistive current fundamental component of zinc oxide arrester |
| 01/30/2013 | CN102901872A Testing method of phase shifting angle of zigzag transformer |
| 01/30/2013 | CN102901866A Vehicular automatic capacitance and inductance tester |
| 01/29/2013 | US8364430 System and method for precision phase shift measurement |
| 01/29/2013 | US8362817 Phase comparator and clock data recovery circuit |
| 01/29/2013 | US8361391 Volumetric induction phase shift detection system for determining tissue water content properties |
| 01/24/2013 | US20130024149 Identification of electrical grid phase information for end-points in a grid network |
| 01/16/2013 | CN102879645A Phase measuring device for low-clutter antenna with curved radiation end face |
| 01/16/2013 | CN102879626A Residual voltage measuring method for automatically detecting load characteristic of electric apparatus |
| 01/16/2013 | CN101871971B Method for measuring frequency-phase characteristic of electrical network |
| 01/15/2013 | US8354867 Phase-locked loop circuit and an associated method |
| 01/10/2013 | US20130009627 Phase detector |
| 01/09/2013 | CN202657054U Novel protection box |
| 01/08/2013 | US8351558 Multiphase direct RF frequency to digital converter and related method |
| 01/08/2013 | US8350595 Semiconductor integrated circuit and control method for clock signal synchronization |
| 01/03/2013 | US20130002233 Circuits for detecting ac- or dc-coupled loads |
| 01/02/2013 | CN102095937B Method for quickly measuring instantaneous phase of alternating current electrical signal |
| 01/02/2013 | CN102095936B Method for measuring phase difference of alternating-current electric signals quickly |
| 01/01/2013 | US8347123 Turning off clock to flip flops |
| 12/26/2012 | EP2538229A1 Phase-comparing device with dual terminal connection |
| 12/26/2012 | CN202631636U Power system harmonic measurement device based on digital signal processor (DSP) |
| 12/26/2012 | CN102841255A Method for measuring phase angle of power of metering chip and application of method |
| 12/26/2012 | CN102841254A Phase-comparing device with dual terminal connection |
| 12/26/2012 | CN102841253A Phase detecting device and method of alternative-current generator |
| 12/26/2012 | CN101661082B Method for measuring power angle of synchronous generator |
| 12/25/2012 | US8340921 Measuring arrangement for registering chemical and/or physical, measured variables, as well as measuring device therefor |
| 12/25/2012 | US8340791 Process device with sampling skew |
| 12/20/2012 | WO2012171219A1 Method for identifying alternating current voltage phase, power supply module and power supply system |
| 12/19/2012 | CN202614849U High-voltage distribution wire cable insulation tan delta on-line monitoring device |
| 12/12/2012 | CN202602128U Width-adjustable phase-verification handle |
| 12/12/2012 | CN102818921A Method for calculating amplitude and phase of alternating current signal based on iterative Fourier transform |
| 12/06/2012 | US20120306476 Phase detection apparatus for alternator and method thereof |
| 12/05/2012 | CN202583322U Electric vehicle motor rotor electrical angle detection circuit |
| 12/05/2012 | CN102810856A Phase correction method for arbitrary impulse converter transformer current difference |
| 12/05/2012 | CN102809701A Wireless high-voltage nuclear phase device |
| 12/05/2012 | CN102809690A Emitter coupling sine integral phase discriminator and detection method thereof |
| 12/05/2012 | CN102809689A Anti-zero-crossing oscillation engine magneto-electric sensor conditioning circuit |
| 12/05/2012 | CN102809688A Method for calculating three-phase voltage real-time phase based on Iterative Fourier transform |
| 12/04/2012 | US8326558 Method of analyzing an integrated circuit, method of observation and their associated installations |
| 11/28/2012 | CN102798748A Method for calculating amplitude and phase of alternating-voltage signal based on iteration Fourier transform |
| 11/28/2012 | CN102095935B Method for measuring instantaneous phase of alternating current electrical signal |
| 11/28/2012 | CN102095934B Measuring method for phase difference of alternating current signals |
| 11/28/2012 | CN101627312B Ac electric quantity measuring device |
| 11/21/2012 | CN202548210U Phase sequence detection circuit for three-phase electricity |
| 11/21/2012 | CN102788901A High accuracy synchronous dynamic phasor measurement method |
| 11/21/2012 | CN102128983B Method for measuring phase of power transmission and distribution line |
| 11/20/2012 | US8314620 Systems and methods for online phase calibration |
| 11/15/2012 | US20120286898 Precision delay line instrument |
| 11/15/2012 | US20120286766 Apparatus for detecting input phase missing and method thereof |
| 11/14/2012 | CN102778606A Digital measurement method for instantaneous phase of alternating current |
| 11/08/2012 | US20120283967 State-matrix-independent dynamic process estimation method in real-time for weakly observable measurement nodes without pmu |
| 11/07/2012 | CN102768303A Method for measuring initial phase difference of all-fiber current transformer |
| 11/07/2012 | CN102768302A Double-channel digital phase noise detection device and phase noise detection method |
| 11/07/2012 | CN102095933B Phase test device and control method thereof |
| 11/07/2012 | CN101644727B High-voltage detector |
| 11/07/2012 | CN101595390B Synchronous phasor measuring device and inter-bus phase angle difference measuring device employing it |
| 10/31/2012 | DE102011017545A1 Auto-Heterodynempfänger Auto-heterodyne |
| 10/31/2012 | CN102759660A Phase measuring instrument |
| 10/31/2012 | CN101114152B Phase detecting device, phase control device and fuser control device |
| 10/24/2012 | CN102749514A Measurement method for phase difference among same-frequency signals based on SOBI (Second Order Blind Identification) and FastICA (fast Independent Component Analysis) |
| 10/18/2012 | US20120262149 Loop parameter sensor using repetitive phase errors |
| 10/17/2012 | CN202494724U Electrical degree measuring device used in synchronous generator and synchronous motor mutual feedback system |
| 10/17/2012 | CN102737827A Noncontact mutual inductor for detection of current phase |
| 10/17/2012 | CN102735938A Quick detection method of grid voltage fundamental wave positive sequence phase angle |
| 10/17/2012 | CN102735937A Method for measuring signal phase difference |
| 10/17/2012 | CN102735936A Ultrahigh resolution phase synchronization detection method based on medium source vernier method |
| 10/17/2012 | CN102735935A Phase detector based on micro-mechanical silicon-based cantilever beam and detection method |
| 10/17/2012 | CN102735934A Phase detector based on micro-mechanical gallium arsenide-based cantilever beam and detection method |
| 10/17/2012 | CN102735933A Micromechanical silicon-based clamped beam-based phase detector and detection method |
| 10/17/2012 | CN102735932A Micromechanical gallium arsenide-based clamped beam-based phase detector and detection method |
| 10/17/2012 | CN102735931A Electric-vector included angle measurement circuit and electric energy meter |
| 10/10/2012 | CN202486214U Portable phase position recognizer |
| 10/10/2012 | CN202486207U Three phrase network voltage sampling module of a photovoltaic inverter and wind energy convertor system |
| 10/10/2012 | CN102721871A Method for measuring phase difference of voltage and total current of zinc oxide arrester |
| 10/10/2012 | CN102721859A Power factor sampling controller for three-phase transmission line in electric power system and control method thereof |
| 10/09/2012 | US8283910 Long range phasing beacon |
| 10/04/2012 | US20120249121 Method, system and device of phase identification using a smart meter |
| 10/03/2012 | CN202471794U Bidirectional display phase voltammeter |
| 10/03/2012 | CN202471793U Intelligent phase voltammeter |
| 09/29/2012 | CA2772331A1 Method, system and device of phase identification using a smart meter |
| 09/26/2012 | CN202455036U Open-phase and phase sequence protector |
| 09/26/2012 | CN102692564A Phase angle measuring method and device of partial-discharging ultrahigh-frequency pulse signal |
| 09/26/2012 | CN101833036B Method for measuring instantaneous phase of alternating current |
| 09/25/2012 | US8274272 Programmable delay module testing device and methods thereof |
| 09/20/2012 | US20120236428 Systems and Methods for Sync Mark Detection |