Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 1 - 50 out of 2,054

Document Document Title
WO/2014/108181A1
An alternative phase detector without the need for direct phase measurement is provided. The phase detector comprises three signal inputs (S1, S2, S3), a ratio determination circuit (RDC) for determining at least two ratios of the respec...  
WO/2013/189242A1
A protective circuit for a high frequency heating device and a high frequency heating device having same, the protective circuit for a high frequency heating device comprising: an input winding (1), a sampling winding (2), a phase compar...  
WO/2013/166005A1
A system comprising an interface configured to condition a signal associated with a power system; a clock module configured to generate a synchronization signal; and a module coupled to the interface and configured to digitize the signal...  
WO/2013/156060A1
A phase detector providing linear phase information from -180° to +180° is disclosed. The phase detector comprises frequency divider and phase shifter and a mixer circuit, frequency divider and phase shifter has an output port connecte...  
WO/2013/113891A1
A method and an apparatus for determining a phase (θ) and a frequency (ω) of an electric quantity being associated with an operation of an electrical device are described. The method comprises extracting a fundamental component (Vα1, ...  
WO/2013/106763A1
A system and method utilize multiple, asynchronous, voltage isolated integrated power data circuits (IPDCs) to respectively determine one or more power parameters of a multi-phase power distribution system. In at least one embodiment, th...  
WO/2013/071768A1
A phase identification device for a three-phase alternating current power supply comprises a state selector (10) connected to a positive electrode of a voltage output by a load and controlling a circuit to be switched on and switched off...  
WO/2013/066054A1
The present invention relates to a system for diagnosing partial discharge of a power instrument by using a contactless phase measuring sensor. Such a diagnostic system includes: internal and external partial discharge detecting sensors ...  
WO/2012/171219A1
A method for identifying alternating current voltage phase, a power supply module and a power supply system. The input and output connector of the power supply module is provided with phase detecting signal pins. The method includes that...  
WO/2012/115736A1
Example embodiments disclose a drive system including a machine including a plurality of phases and configured to generate power based on a plurality of phase currents, each respectively associated with the plurality of phases and a dire...  
WO/2012/036339A1
Provided is a single-phase line voltage calculating method of a smart electricity distribution operating system. The single-phase line voltage calculating method includes: calculating each phase voltage value by using a current value mea...  
WO/2011/116822A1
A phase detector (100, 400, 800) comprising a balun (150) and input ports (116) at each of the balun's balanced ports. The phase detector (100, 400, 800) has four devices (105, 115, 110, 155) for measuring a signal's amplitude: - a first...  
WO/2011/089421A1
An apparatus and a method for measuring a phasor of an electrical power system signal (20) is described. The power system signal (20) has a cycle having a predetermined period and is sampled to produce a sample stream (22) of the electri...  
WO/2011/071760A2
A system for measuring the superposition of a plurality of sound waves propagating within a conduit containing a fluid having a plurality of transducers positioned substantially parallel to the flow direction along the external surface o...  
WO/2011/071760A3
A system for measuring the superposition of a plurality of sound waves propagating within a conduit containing a fluid having a plurality of transducers positioned substantially parallel to the flow direction along the external surface o...  
WO/2011/038166A3
Techniques and devices for measuring phase noise in radio frequency (RF), microwave, or millimeter signals based on photonic delay.  
WO/2011/038166A2
Techniques and devices for measuring phase noise in radio frequency (RF), microwave, or millimeter signals based on photonic delay.  
WO/2011/029018A3
A voltage-converter and a signal processing circuit are disclosed. A voltmeter, a power meter and a three-phase meter each including the voltage-converter and the signal processing circuit are disclosed. Methods of making the voltage-con...  
WO/2011/029018A2
A voltage-converter and a signal processing circuit are disclosed. A voltmeter, a power meter and a three-phase meter each including the voltage-converter and the signal processing circuit are disclosed. Methods of making the voltage-con...  
WO/2010/136390A1
A wireless communication transmitter is configured to determine transmitter phase shift, and correspondingly includes a derivation circuit, one or more slope polarity tracking circuits, and a phase shift computation circuit. The derivati...  
WO/2010/098460A1
Provided is a phase determining device capable of determining phase differences with high precision using digital circuits. A phase determining device (1) comprises a buffer delay determining circuit (110), a phase difference determining...  
WO/2010/081725A2
A network analyser for measuring a group runtime (T G ), generated by a measuring object (17) to be measured, generates a stimulating signal (x ln (t)) made up of two signals (x In1 (t), x In2 (t)) separated by a frequency difference (Δ...  
WO/2010/048817A1
A signal phase difference measurement method, apparatus and system are provided. The measurement method includes: sampling no less than two signals by one sample channel (101), acquiring the amplitude information of the sampled signals (...  
WO/2010/041163A2
A circuit arrangement is described comprising a first receiver configured to receive a first input signal, a second receiver configured to receive a second input signal, a first signal generator configured to generate a first pulse signa...  
WO/2010/041163A3
A circuit arrangement is described comprising a first receiver configured to receive a first input signal, a second receiver configured to receive a second input signal, a first signal generator configured to generate a first pulse signa...  
WO/2010/024835A1
In one embodiment, a frequency generator produces an excitation signal, a local oscillator signal, and a reference signal at a difference frequency of the excitation signal and local oscillator signal. The excitation signal is applied to...  
WO/2009/140115A1
Methods and devices to determine values relating to metering a power line signal. A power line signal may be sampled by defining accumulation intervals associated with the power line signal. An accumulation interval may comprise sample p...  
WO/2009/126811A2
Coupling a charging station to a power line segment that is terminated at a first end by a charging terminal includes: sensing a communication signal propagating on the power line and being coupled from multiple taps connected to the pow...  
WO/2009/119076A1
Provided is a measuring apparatus for measuring a signal to be measured. The measuring apparatus is provided with a first oscillation circuit which receives input of one pulse of the signal to be measured, starts to oscillate in response...  
WO/2009/082395A1
A method and a system for three-phase detection of a three-phase electric device are provided. The system includes a testing circuit and a comparison module. The testing circuit generates two reference voltages by using the three phase v...  
WO/2009/065294A1
A local or remote distribution management system, especially an auto-metering unit applied to a distribution transformer, comprises a suspending power supply(1), a high voltage capacitance divider(2), a current transformer(5), a wireless...  
WO/2008/149990A1
Provided is a phase measuring device for measuring a phase of a signal-to-be-measured. The device includes: a sampling unit which samples a signal-to-be-measured at a timing of a given sampling clock; a jitter application unit which appl...  
WO/2008/143520A1
Method and apparatus (1) for the monitoring of electricity that is being transmitted via one or more high voltage lines (19), where the magnetic field from at least one of the high voltage lines (19) is measured as a function of the curr...  
WO/2008/126240A1
Using a real time frequency and time series data of instantaneous value of voltage, time series estimation data of voltage instantaneous value and an estimation value of voltage at current moment in time are calculated by a method of lea...  
WO/2008/120282A1
An AC electric quantity measuring device used for power system control protective devices comprises means for determining the amplitude, chord length, and rotation phase angle of a voltage rotation vector from acquired time-series data b...  
WO/2008/106030A1
The present invention relates to a method of displaying balance and correlation information of at least a pair of a first channel signal and a second channel signal. According to the present invention, the method of displaying balance an...  
WO/2008/053562A1
A phase difference detector detects a phase difference between input clocks both having the same first frequency. The phase difference detector comprises a pulse width converting section for converting the phase difference between the in...  
WO/2008/014582A1
A phasor representation of an electrical entity at a geographical location in a multiple phase AC electric power system is produced by receiving a synchronization signal from a remote source, producing a sampling time signal in response ...  
WO/2008/008949A2
Signal-integrity measurement systems and methods utilizing unique time-base generation techniques for controlling the sampling of one or more signals under test. A time-base generator made in accordance with the present disclosure includ...  
WO/2008/003397A2
The invention relates to a device for determining the temporal position of an analogue trigger signal with relation to an analogue clock signal, comprising an analogue cross-correlator (30), which carries out an analogue cross-correlatio...  
WO/2008/003397A3
The invention relates to a device for determining the temporal position of an analogue trigger signal with relation to an analogue clock signal, comprising an analogue cross-correlator (30), which carries out an analogue cross-correlatio...  
WO/2007/111980A1
A phase measurement system for measuring a phase difference between an input signal and a reference signal, comprises: a phase comparator having a first input receiving a first sample of the input signal and a second sample of the input ...  
WO/2007/082125A3
An electronic circuit and method to determine a resistance value of a resistive element (201). The circuit includes a current source (209) coupled in series with the resistive element (201). The current source (209) is configured to forc...  
WO/2007/077686A1
A measuring device measures a phase difference of transmitting signals modulated by different frequency sub-carriers that a transmitting device transmits through their channels, respectively. The measuring device comprises a signal addin...  
WO/2007/037340A1
A phase difference measuring device for reducing the measurement time includes: a plurality of phase difference measuring circuits (104, 105, 106) arranged in one row; and phase difference conversion circuits (101, 102, 103) connected be...  
WO/2007/038777A2
The present invention provides a novel symbol timing recovery method for VSB receivers. Systems are described that comprise a timing error detector (TED) that produces an exact symbol timing error even in the presence residual carrier ph...  
WO/2007/029149A3
A phase detection system (100) comprises an input terminal (101), first and second peak detectors (103, 113), an averaging unit (107), an offset unit (122), and a comparator (126). Input terminal (101) is coupled to the first and to the ...  
WO/2007/029149A2
A phase detection system (100) comprises an input terminal (101), first and second peak detectors (103, 113), an averaging unit (107), an offset unit (122), and a comparator (126). Input terminal (101) is coupled to the first and to the ...  
WO/2007/025232A3
Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion ar...  
WO/2007/025232A2
Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion ar...  

Matches 1 - 50 out of 2,054