| Patents for G01R 25 - Arrangements for measuring phase angle between a voltage and a current or between voltages or currents (2,594) |
|---|
| 08/20/1997 | EP0789959A1 Method and apparatus for synchronizing ppm communications between an implantable device and an external device |
| 08/19/1997 | US5659242 Apparatus for comparing two waveforms in real time |
| 08/06/1997 | EP0787304A1 Numerical comparator |
| 07/08/1997 | US5646955 Apparatus for measuring cycle to cycle jitter of a digital signal and method therefor |
| 06/24/1997 | US5642039 Handheld vector network analyzer |
| 06/04/1997 | EP0777332A1 A Microwave multiphase detector |
| 06/03/1997 | US5635863 Programmable phase comparator |
| 05/22/1997 | DE19648057A1 Amplitude fault correction for quadrature detector |
| 05/20/1997 | US5631582 Frequency and phase comparator |
| 05/14/1997 | CN2254191Y Light beam and digit double display installation type KWH meter |
| 05/07/1997 | EP0771422A1 Process for measuring phase jitter of a data signal |
| 05/06/1997 | US5627496 PLL and phase detection circuit therefor |
| 05/06/1997 | US5626625 Method and apparatus for measuring the period of response of an implantable medical device based upon the difference in phase between a trigger signal and an internal clock signal |
| 04/23/1997 | EP0715723A4 Measuring burst/sinusoidal waveform time span |
| 04/16/1997 | EP0767987A1 Digital phase comparator |
| 04/16/1997 | EP0669003A4 Precision ditigal multimeter and waveform synthesizer for multi-signals with distorted waveforms embedded in noise. |
| 04/08/1997 | US5619134 Physical quantity detecting device using interpolation to provide highly precise and accurate measurements |
| 03/18/1997 | US5612621 Method for monitoring cracks and critical concentration by using phase angle |
| 02/25/1997 | US5606510 High speed power analyzer |
| 02/11/1997 | US5602469 Apparatus for detecting the amplitude and phase of an a.c. signal |
| 02/05/1997 | EP0756741A1 Methods and apparatus for adaptive beamforming |
| 01/14/1997 | US5594376 For delivering a clock signal input to a load |
| 01/14/1997 | US5594333 Zero current sensor |
| 01/07/1997 | US5591962 Synchronous signal detection apparatus with a photoconductive photodetector |
| 12/31/1996 | US5590158 Method and apparatus for estimating PSK modulated signals |
| 12/03/1996 | US5581620 Signal processing apparatus |
| 11/19/1996 | US5576618 Process and apparatus for comparing in real time phase differences between phasors |
| 10/31/1996 | WO1996034299A1 Interrogator for electronic identification system |
| 10/31/1996 | CA2219229A1 Interrogator for electronic identification system |
| 10/22/1996 | US5568071 Pulse phase difference encoding circuit |
| 10/16/1996 | EP0737865A2 Digital phase difference measuring circuit |
| 09/24/1996 | US5559689 Harmonic content determination apparatus |
| 09/19/1996 | WO1991008493A3 Method and device for comparing two variable analog signals |
| 09/10/1996 | US5555182 For detecting phase/magnitude disruptions |
| 09/04/1996 | EP0729583A1 Phase-measurement device |
| 08/21/1996 | EP0727670A2 Phase difference measuring circuit |
| 08/18/1996 | CA2169616A1 Circuit configuration for phase difference measurement |
| 07/23/1996 | US5539655 Apparatus for detecting out of phase of power systems and method for detecting the same |
| 07/16/1996 | US5537043 Method for monitoring cracks and critical concentration by using phase angle |
| 07/09/1996 | US5534809 Pulse phase difference encoding circuit |
| 06/27/1996 | WO1996019735A1 Handheld vector network analyzer |
| 06/19/1996 | EP0717285A2 Rotation monitoring system for a rotary-anode drive motor in X-ray tubes |
| 06/18/1996 | US5528200 Ring oscillator and pulse phase difference encoding circuit |
| 06/12/1996 | EP0716524A1 Phase detector circuit |
| 06/12/1996 | EP0715723A1 Measuring burst/sinusoidal waveform time span |
| 06/11/1996 | US5525899 Physical quantity change detection device which detects change by detecting a phase difference between two pulses |
| 06/05/1996 | DE19513795C1 Digital phase difference measuring circuit |
| 06/04/1996 | US5522866 Method and apparatus for improving the resolution of pulse position modulated communications between an implantable medical device and an external medical device |
| 05/30/1996 | WO1996016336A1 Measuring method and measuring system of phase angle of electrical system sinusoidal quantities |
| 05/29/1996 | CN1123415A Method for measuring phase angle of sinusoidal quantity of electric power system and measuring system |
| 05/28/1996 | US5521491 Phase detecting device for determining phase angle between two electrical signals |
| 05/14/1996 | US5517155 Phase locked loop having digitally controlled oscillator and pulse signal generator |
| 05/09/1996 | WO1996013919A1 Method and apparatus for synchronizing ppm communications between an implantable device and an external device |
| 05/02/1996 | WO1996012969A1 Numerical comparator |
| 05/02/1996 | CA2203166A1 Numerical comparator |
| 04/10/1996 | EP0706054A2 Phase comparator |
| 04/03/1996 | CN1119740A Method and apparatus for measurement of alternating voltage, alternating current and phase single of testing signal |
| 04/02/1996 | US5504789 Phase detetion method for flow measurement and other applications |
| 03/20/1996 | EP0702212A2 Phase difference measuring apparatus and mass flowmeter thereof |
| 03/12/1996 | US5498983 Device for checking the skew between two clock signals |
| 03/12/1996 | US5498969 Device for the vector measurement of ultra-high frequency signals of the same angular frequency of the six port junction type |
| 03/12/1996 | US5498955 Apparatus for detecting the amplitude and phase of an a.c. signal |
| 02/27/1996 | US5495100 Phase difference detecting method, circuit and apparatus |
| 02/22/1996 | DE4443417C1 Phase detector for data receiver |
| 02/22/1996 | DE19506007C1 Digital phase difference measurement circuit |
| 02/08/1996 | WO1996003659A1 Process for measuring phase jitter of a data signal |
| 02/01/1996 | DE4426713A1 Verfahren zum Messen des Phasenjitters eines Datensignals A method for measuring the phase jitter of a data signal |
| 01/11/1996 | WO1996001007A1 Digital phase comparator |
| 01/10/1996 | EP0691758A1 Synchronous detection of optical signals |
| 01/10/1996 | EP0691545A1 Process and appliance in digital systems for measuring alternating voltage, current and phase angle of a signal |
| 12/19/1995 | US5477196 Pulse generator |
| 11/22/1995 | EP0299060B1 High impedance fault analyzer in electric power distribution |
| 11/21/1995 | US5469173 Monitoring phase characteristics of BPSK and CW signals |
| 11/02/1995 | WO1995029479A1 Methods and apparatus for adaptive beamforming |
| 08/30/1995 | EP0669003A1 Precision ditigal multimeter and waveform synthesizer for multi-signals with distorted waveforms embedded in noise |
| 08/17/1995 | WO1995022064A1 A phase detector with minimized phase detection error |
| 08/17/1995 | DE19505652A1 Instantaneous phase and amplitude measurement circuit + |
| 08/17/1995 | DE19505308A1 Impulse generating device for digitally controlled PLL |
| 08/09/1995 | EP0665948A1 Magnetic flowmeter determining flow rate from phase angle difference |
| 08/09/1995 | EP0474671B1 Dual state phase detector having frequency steering capability |
| 08/08/1995 | US5440251 Phase differential measurement circuit |
| 08/01/1995 | US5438254 Phase difference measuring device |
| 07/20/1995 | DE4424059C1 Digital measurement of ac voltage, ac current and phase angle of measurement signal |
| 07/11/1995 | US5432826 Digital phase comparator and phase-locked loop |
| 07/06/1995 | WO1995018384A1 Digital phase detector |
| 06/28/1995 | EP0660518A1 Pulse generator |
| 06/27/1995 | US5428648 Digital PLL circuit having signal edge position measurement |
| 06/06/1995 | US5422918 Clock phase detecting system for detecting the phase difference between two clock phases regardless of which of the two clock phases leads the other |
| 06/06/1995 | CA1335842C Phase/digital conversion method and arrangements for implementing the method |
| 05/26/1995 | WO1995014236A1 Phase-measurement device |
| 05/23/1995 | US5417118 Magnetic flowmeter determining flow rate from phase angle difference |
| 05/17/1995 | EP0653070A1 High speed power analyzer |
| 05/17/1995 | CN2197675Y Phase authorized meter for high voltage and three phase A.C. source |
| 05/16/1995 | US5416444 Ring oscillator and pulse phase difference encoding circuit |
| 05/03/1995 | EP0651259A1 Method and apparatus for measuring modulation acccuracy and a transmitted signal |
| 05/02/1995 | US5412311 System for unambiguously determining the phase of an input signal of relative to a clock reference signal |
| 04/27/1995 | WO1995006854A3 Magnetic flowmeter determining flow rate from phase angle difference |
| 04/27/1995 | DE4336240A1 Circuit arrangement for a digital phase comparator |
| 04/26/1995 | EP0650256A2 Apparatus for producing an indication of a time difference |
| 04/25/1995 | US5410195 Ripple-free phase detector using two sample-and-hold circuits |