| 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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| 10/04/2006 | CN2824046Y Three-phase electric source phase tester |
| 09/28/2006 | US20060214653 Gain and phase detector having dual logarithmic amplifiers |
| 09/28/2006 | DE19983488B4 System und Verfahren zur Frequenzkompensation in einer Energiemeßvorrichtung System and method for frequency compensation in a Energiemeßvorrichtung |
| 09/27/2006 | EP1704384A1 Digital phase detector for periodically alternating signals |
| 09/26/2006 | US7112982 Method for evaluating semiconductor device |
| 09/21/2006 | US20060208769 Circuit for use in frequency or phase detector |
| 09/21/2006 | US20060208766 Jitter detection apparatus |
| 09/21/2006 | DE102006010926A1 Verfahren zur Messung von höherem Phasenrauschen unter Verwendung eines Frequenz-Vorteilers, eine Apparatur und ein Programm, die das Verfahren verwenden A method for measuring a higher phase noise using a frequency pre-scaler, an apparatus and a program using the method |
| 09/20/2006 | EP1703292A1 A method for measuring the operating state of a synchronous motor using composite power angle meter |
| 09/19/2006 | US7109778 DC-offset transient response cancel system |
| 09/19/2006 | US7109760 Delay-locked loop (DLL) integrated circuits that support efficient phase locking of clock signals having non-unity duty cycles |
| 09/14/2006 | US20060202733 High performance signal generation |
| 09/13/2006 | CN1831543A Specific phase position detection circuit and method of the same |
| 09/12/2006 | US7107181 Methods, systems, and storage mediums for maintaining timing supplies and assignments |
| 09/08/2006 | CA2538485A1 Method and apparatus for detecting linear phase error |
| 08/31/2006 | US20060195806 Method and apparatus for quantifying the timing error induced by an impedance variation of a signal path |
| 08/31/2006 | US20060195276 Configurable voltage regulator |
| 08/22/2006 | US7096134 Method and apparatus for measuring the rotational speed of a fan |
| 08/22/2006 | US7095640 Multiple match detection circuit and method |
| 08/15/2006 | US7091714 Gain and phase detector having dual logarithmic amplifiers |
| 08/09/2006 | CN1816750A Device and method for determining relative phase displacement between a current and voltage |
| 08/09/2006 | CN1815892A Circuit for detecting phase-error and generating control signal |
| 08/02/2006 | CN2802516Y Circuit device of high voltage power-supply phase detector |
| 08/02/2006 | CN1811472A Automatic measuring and displaying method for control angle |
| 08/01/2006 | US7084670 Phase-frequency detector with gated reference clock input |
| 07/20/2006 | US20060161359 Field device electronics fed by an external electrical energy supply |
| 07/19/2006 | CN1265203C Method and apparatus for estimating phase of signal |
| 07/19/2006 | CN1265092C Device and method for controlling reciprocating compressor operation |
| 07/04/2006 | US7072778 Method and system for determining a rotor position in a wound field DC motor |
| 06/28/2006 | CN1794000A Monitoring device of power generator real time power angle |
| 06/21/2006 | CN1260628C Apparatus and method for waveform phase and period detection |
| 06/20/2006 | CA2360031C Capacitive test point voltage and phasing detector |
| 06/15/2006 | US20060125622 Self testing ground fault circuit interrupter (GFCI) |
| 06/13/2006 | US7062391 Motion compensation in biomagnetic measurement |
| 06/13/2006 | US7061276 Digital phase detector |
| 06/13/2006 | CA2529768A1 Power meter |
| 06/06/2006 | US7057418 High speed linear half-rate phase detector |
| 05/31/2006 | EP1604215A4 Generation and measurement of timing delays by digital phase error compensation |
| 05/30/2006 | US7054772 Apparatus and method for monitoring and compensating for variation in solenoid resistance during use |
| 05/30/2006 | US7053666 Phase frequency detector |
| 05/30/2006 | US7053626 Device and method for monitoring the connection of an electrical supply unit |
| 05/11/2006 | CA2586103A1 Communicating with an implanted wireless sensor |
| 05/04/2006 | DE102005049219A1 Phasendifferenz-Erfassungsvorrichtung Phase difference detection device |
| 05/02/2006 | US7038465 System and method for calibrating balanced signals |
| 04/27/2006 | DE10354224B4 Schaltungsanordnung zur digitalen Phasendifferenzmessung Circuit arrangement for digital phase difference measurement |
| 04/26/2006 | CN1764986A Circuit for use in frequency or phase detector |
| 04/19/2006 | CN2773697Y Noise-resistant and low-frequency precisioning phase difference meter |
| 04/18/2006 | US7031859 Apparatus and method for identifying cable phase in a three-phase power distribution network |
| 04/18/2006 | US7031856 Automatic wire dielectric analyzer |
| 04/18/2006 | US7030635 Device for measuring supply voltage and method thereof |
| 04/18/2006 | US7030602 Testing of current transformers |
| 04/13/2006 | WO2006038468A1 Phase difference measuring circuit |
| 04/13/2006 | DE19757573B4 Verfahren und Vorrichtung zum Anzeigen der Richtung eines Energieflusses in elektrischen Wechselspannungsnetzen Method and apparatus for indicating the direction of energy flow in AC electric networks |
| 04/06/2006 | US20060071654 Activation signal output circuit and determining circuit |
| 04/06/2006 | DE112004000905T5 Phasenmessvorrichtung, Verfahren, Programm und Aufzeichnungsmedium Phase measuring device, method, program, and recording medium |
| 04/06/2006 | DE102004045288A1 Adjustable signal delay circuit comprises a two signal delay members, delay measurement member, subtractor and amplifer connected to permit delay adjustment and control |
| 04/05/2006 | EP1642144A1 Device and method for determining relative phase displacement between a current and voltage |
| 04/05/2006 | CN2769893Y Apparatus for making synchronous phase measurement with optical signal |
| 04/05/2006 | CN2769891Y Practical power factor tester |
| 04/04/2006 | US7023198 Semiconductor device and method of inspecting the same |
| 04/04/2006 | US7023195 Module, system and method for testing a phase locked loop |
| 03/29/2006 | EP1640733A1 Method and device for digitally measuring the phase of a signal |
| 03/27/2006 | CA2484951A1 Method and apparatus for phase determination |
| 03/21/2006 | US7016613 Linear half-rate phase detector and clock and data recovery circuit |
| 03/16/2006 | US20060055433 Switching control circuit having off-time modulation to improve efficiency of primary-side controlled power supply |
| 03/14/2006 | US7012420 Measuring device to record values, in particular angles or linear segments |
| 03/09/2006 | CA2484808A1 Phase determination system |
| 02/28/2006 | US7006935 Synchronous vector measuring device |
| 02/22/2006 | CN1737583A Indoor looped network cabinet intelligent nuclear phase method |
| 02/22/2006 | CN1243249C Circuit load property and its voltage-current phase difference measuring method and apparatus |
| 02/21/2006 | US7003416 Method and a device for monitoring the performance of test apparatus for testing components |
| 02/14/2006 | CA2400830C A phase detector |
| 01/26/2006 | US20060017472 Phase detection in a sync pulse generator |
| 01/26/2006 | US20060017471 Phase detector |
| 01/12/2006 | US20060009932 Harmonic diagnosing method for electric facility |
| 01/10/2006 | US6985822 Methods and systems for proximity system target material variation effects reduction |
| 01/04/2006 | EP1612943A1 PLL circuit and phase control method of PLL circuit |
| 01/04/2006 | EP1611583A1 Circuit for use in frequency or phase detector |
| 12/29/2005 | US20050288880 Methods, systems, and storage mediums for maintaining timing supplies and assignments |
| 12/29/2005 | US20050286671 PLL circuit and phase control method of PLL circuit |
| 12/22/2005 | US20050280446 Method and apparatus for phase-independent predictable resetting |
| 12/22/2005 | DE102004027349A1 High voltage bushing for determining insulation dissipation factor has insulated high voltage conductor, embedded conductive inserts, inner clip and outer clip connected to insert, variable reference capacitor and voltmeter |
| 12/15/2005 | US20050278132 PWM dual store protection |
| 12/14/2005 | EP1604215A1 Generation and measurement of timing delays by digital phase error compensation |
| 12/08/2005 | WO2005116668A1 Method and apparatus for detecting the phase wiring of an arbitrary unknown phase voltage relative to a reference phase voltage |
| 12/07/2005 | CN1230683C Simultaneous display of primary measurement values and derived parameters |
| 12/06/2005 | US6972552 Method for the precise measurement of dependency on amplitude and phase of a plurality of high frequency signals and a device for carrying out said method |
| 11/29/2005 | US6970020 Half-rate linear quardrature phase detector for clock recovery |
| 11/24/2005 | DE102005017545A1 Verfahren zur Kartierung von Spektrumspunkten mit linearem Abstand auf eine Frequenz mit logarithmischem Abstand und Messapparatur, die das Verfahren einsetzt A method for mapping of spectrum points with linearly spaced on a logarithmic frequency interval and measuring apparatus employing the method |
| 11/24/2005 | DE102005017217A1 Verfahren und Apparatur zur Messung von Phasenrauschen Method and apparatus for measuring phase noise |
| 11/22/2005 | US6967503 Comparator |
| 11/15/2005 | US6965383 Scaling persistence data with interpolation |
| 10/27/2005 | US20050240367 Method of mapping linearly spaced spectrum points to logarithmically spaced frequency and a measuring apparatus using the method |
| 10/27/2005 | US20050238094 Method and an apparatus for measuring phase noise |
| 10/12/2005 | EP1584929A2 High performance signal generation |
| 10/12/2005 | CN1222778C Phase detector |
| 10/06/2005 | US20050218997 High performance signal generation |
| 10/05/2005 | CN1677844A High performance signal generation |
| 10/05/2005 | CA2503685A1 Three-phase power signal processor |
| 09/29/2005 | US20050212506 Testing of current transformers |