| 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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| 11/27/2001 | US6324236 Phase detector arrangement |
| 11/22/2001 | US20010043122 Remotely controllable phase locked loop clock circuit |
| 11/14/2001 | EP1154279A2 A method and apparatus for determining a digital phase shift in a signal |
| 11/08/2001 | DE10035967A1 Method and device for determining phase difference between output signals from an opto-mechanical transmitting device sets counter devices going through trigger events from first and second signals |
| 11/08/2001 | DE10022025A1 Mehrphasendetektor Multi-phase detector |
| 11/07/2001 | EP1152247A2 Multiple phase detector |
| 11/06/2001 | US6313621 Method and arrangement for determining the phase difference between two timing signals |
| 10/30/2001 | US6311138 Digital storage oscilloscope with simultaneous primary measurement and derived parameter display on common time axis and method therefor |
| 10/30/2001 | CA2190222C A microwave multiphase detector |
| 10/11/2001 | US20010028243 PLL semiconductor device with testability, and method and apparatus for testing same |
| 10/09/2001 | US6300803 Phase-comparison circuit |
| 10/04/2001 | EP1139568A2 System for high precision signal phase difference measurement |
| 09/27/2001 | WO2001071367A1 Measurement of quantities of electric line |
| 09/18/2001 | US6291979 Apparatus for and method of detecting a delay fault |
| 09/11/2001 | US6288574 Digital phase detector |
| 08/16/2001 | US20010013771 Phase failure monitoring |
| 08/08/2001 | EP0804740B1 Handheld vector network analyzer |
| 07/31/2001 | US6269135 Digital phase discriminations based on frequency sampling |
| 07/10/2001 | US6259278 Phase detector |
| 07/05/2001 | US20010006343 Integrated circuit and lot selection system therefor |
| 07/04/2001 | EP1112503A1 Accumulated phase measurement using open-loop phase estimation |
| 07/03/2001 | US6255858 Phase-frequency detector and phase-locked loop circuit incorporating the same |
| 06/28/2001 | US20010005154 Self-compensating phase detector |
| 06/27/2001 | CN1300946A Method for monitoring phase faults and electric appliances equipped therewith |
| 06/19/2001 | US6249750 Phase detector |
| 06/19/2001 | CA2204163C Method and apparatus for improving the resolution of pulse position modulated communications between an implantable medical device and an external medical device |
| 06/13/2001 | EP1107010A2 Phase loss monitoring |
| 06/13/2001 | DE19958369A1 Phasenausfall-Überwachung Phase failure monitoring |
| 05/31/2001 | WO2001038888A1 Apparatus and method for measuring jitter, and tester for semiconductor integrated circuit equipped with the apparatus for measuring jitter |
| 05/24/2001 | US20010001850 Digital storage oscilloscope with simultaneous primary measurement and derived parameter display on common time axis and method therefor |
| 05/10/2001 | WO2001033240A2 High resolution skew detection apparatus and method |
| 05/09/2001 | CN2429838Y Phase identifier for low voltage cables in eletric power system |
| 05/02/2001 | EP1096263A2 Jitter detector, phase difference detector and jitter detecting method |
| 05/02/2001 | CN2428782Y Frequency phase-difference and frequency stability-degree test instrument |
| 05/01/2001 | US6225831 Phase detector |
| 04/25/2001 | CN2427813Y Power angle monitoring instrument for synchronous generator |
| 04/25/2001 | CN1292876A Simultaneous display of primary measurement values and derived parameters |
| 04/17/2001 | US6219394 Digital frequency sampling and discrimination |
| 04/03/2001 | US6212446 Method and apparatus for detecting out-of-step in electric power system |
| 03/27/2001 | US6208181 Self-compensating phase detector |
| 03/22/2001 | WO2001020350A1 Phase detector |
| 03/20/2001 | US6204750 Interrogator for electronic identification system |
| 03/07/2001 | CN1286854A Digital phase discrimination based on frequency sampling |
| 02/27/2001 | US6195617 Digital storage oscilloscope with simultaneous primary measurement and derived parameter display on common time axis and method therefor |
| 02/27/2001 | US6194918 Phase and frequency detector with high resolution |
| 02/27/2001 | US6194916 Phase comparator circuit for high speed signals in delay locked loop circuit |
| 02/14/2001 | CN1284229A Phase digistizer for radio communications |
| 02/08/2001 | DE19943956C1 Phase detector uses at least 2 series diodes for comparing phase of input signal with reference signal with tuned capacitors and/or inductances for providing circuit symmetry |
| 02/06/2001 | CA2139575C High speed power analyzer |
| 01/09/2001 | US6172533 Phase and frequency detector with high resolution |
| 12/27/2000 | EP1062521A1 Simultaneous display of primary measurement values and derived parameters |
| 12/05/2000 | US6157218 Phase-frequency detection with no dead zone |
| 12/05/2000 | US6157183 Two port handheld vector network analyzer with frequency monitor mode |
| 12/05/2000 | CA2048760C Adaptive estimation of phase or delay for both leading and lagging phase shifts |
| 11/30/2000 | DE19920636A1 Graphical display device especially for measured phasor values |
| 11/30/2000 | DE10006551A1 Delay fault detection in PLL circuit for very large integrated circuit, involves measuring oscillation frequency maintaining time period, using delay time of variation parameter of instantaneous signal phase |
| 11/28/2000 | US6154021 Method and arrangement for detecting phase difference |
| 11/14/2000 | US6148052 Digital phase detector with ring oscillator capture and inverter delay calibration |
| 11/14/2000 | US6148050 Phase digitizer for radio communications |
| 11/02/2000 | EP1047946A1 Self-compensating phase detector |
| 10/25/2000 | EP1045967A1 Phase recognition device |
| 10/25/2000 | CN1057839C Method and apparatus for measurement of alternating voltage, alternating current and phase angle of testing signal |
| 10/10/2000 | US6130531 Phase angle measurement method and system in electric power systems |
| 10/04/2000 | EP1019795A4 Extended resolution phase measurement |
| 10/03/2000 | US6128584 System and method for frequency compensation in an energy meter |
| 09/27/2000 | EP1038380A1 Phase digitizer for radio communications |
| 09/06/2000 | CN1265752A Extended resdution phase measurement |
| 09/05/2000 | US6114879 Phase detectors |
| 08/31/2000 | DE10002087A1 Phase comparison circuit for converting voltage signals into current signals depending on phase difference has current mirror stage with three transistors, constant current source and resistor |
| 08/22/2000 | US6107890 Digital phase comparator and frequency synthesizer |
| 08/17/2000 | DE4333271C2 Meßvorrichtung für ein Übertragungssystem A measuring device for a transmission system |
| 08/10/2000 | DE19904979A1 Leiterplatte für einen elektrischen Schalter Circuit board for an electric switch |
| 08/09/2000 | EP1026926A2 Circuit board for an electrical switch |
| 08/08/2000 | US6100722 Phase detector with extended linear range |
| 08/08/2000 | US6100721 Circuit and method of extending the linear range of a phase frequency detector |
| 07/26/2000 | EP1021885A1 Digital phase discrimination based on frequency sampling |
| 07/19/2000 | EP1019795A1 Extended resolution phase measurement |
| 07/11/2000 | US6087865 Programmable frequency divider |
| 06/08/2000 | WO2000033230A1 System and method for frequency compensation in an energy meter |
| 06/06/2000 | US6072337 Phase detector |
| 04/20/2000 | DE19844419A1 Determining phase angle between two signals, e.g. for digital metering |
| 04/06/2000 | WO2000019077A1 Phase recognition device |
| 04/06/2000 | DE19844910A1 Einrichtung zur Phasenerkennung Means for phase detection |
| 04/05/2000 | EP0990161A2 Two port handheld vector network analyzer with frequency monitor mode |
| 04/04/2000 | US6046594 Method and apparatus for monitoring parameters of an RF powered load in the presence of harmonics |
| 03/15/2000 | EP0823059B1 Interrogator for electronic identification system |
| 03/08/2000 | CN2368039Y Phase-sequence identifying apparatus |
| 03/01/2000 | EP0981860A2 Phase detector arrangement |
| 02/22/2000 | US6028898 Signal regenerator |
| 02/01/2000 | US6020733 Two port handheld vector network analyzer with frequency monitor mode |
| 01/25/2000 | US6018318 Method and apparatus for determining the phase angle in position transmitters with sinusoidal output signals |
| 12/28/1999 | US6008663 Eliminating phase shift in an integrated circuit tester |
| 11/23/1999 | US5990673 Digital phase comparator |
| 11/16/1999 | US5987084 Method and apparatus for correction of GPS carrier phase measurement |
| 11/16/1999 | US5987082 Playback apparatus and playback method |
| 11/02/1999 | US5977801 Self-resetting phase/frequency detector with reduced dead zone |
| 10/12/1999 | CA2105233C Digital phase comparator and phase-locked loop |
| 09/16/1999 | WO1999046608A1 Simultaneous display of primary measurement values and derived parameters |
| 09/16/1999 | CA2323085A1 Simultaneous display of primary measurement values and derived parameters |
| 09/15/1999 | CN1045146C Apparatus for measuring skew timing errors |