Patents
Sitemap › G01 - Measuring; Testing › G01R - Measuring electric variables; Measuring magnetic variables › G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850)
12/2000
12/13/2000EP1058957A1 Method for event analysis at an intelligent electronic device
12/13/2000CN2409773Y Time control automatic switch for aerator
12/12/2000US6160441 Sensors for measuring current passing through a load
12/06/2000EP1058093A1 Method and circuit for powering and monitoring the functioning of at least one sensor
12/06/2000EP1018022A4 Energy meter with power quality monitoring and diagnostic systems
12/06/2000CN2409523Y Electroscope
12/05/2000US6157222 Low power adjustable input threshold circuit
12/05/2000US6157221 Three input comparator
12/05/2000US6157184 Insulated electrostatic voltage indicator
12/05/2000US6157171 Voltage monitoring circuit for rechargeable battery
12/05/2000CA2068901C Device for measuring current by optic fiber
11/2000
11/30/2000WO2000072048A1 Faraday cup for determination of power density distribution of electron beams
11/30/2000WO2000072028A1 Voltage monitor circuit with adjustable hysteresis using a single comparator
11/30/2000WO2000072027A1 Electrical current sensor
11/30/2000WO2000028337A3 Electronic circuit with a non-continuous discharge path
11/30/2000DE19924237A1 Short circuit current monitoring device has one winding of sensor coil on nonmagnetic carrier of constant cross=sectional area
11/30/2000DE19921295A1 Earth wire monitoring device for electric cable of welding machine uses coil to detect current and interrupts supply accordingly
11/30/2000DE19919602A1 Stromsensor nach dem Kompensationsprinzip Current sensor according to the compensation principle
11/30/2000CA2273376A1 Alternating current sensor
11/29/2000CN2408525Y Current sensor for electric locomotive
11/29/2000CN1275203A Current measuring device and telephone terminal using such a current measuring device
11/29/2000CN1274851A Burn-out fault detecting method and equipment
11/28/2000US6154687 Modified cosine filters
11/28/2000US6153950 Power supply device for electronic equipment
11/28/2000CA2107221C Low power voltage sensing circuit
11/28/2000CA2009381C Biasing circuitry for a diode detector
11/23/2000WO2000070315A1 Audio signal detector and meter
11/23/2000DE19964169A1 Anordnung zur Strommessung in einer elektrischen Maschine Arrangement for current measurement in an electrical machine
11/22/2000EP1054410A1 Comparator, display apparatus using comparator for driving system and driving method for comparator
11/22/2000CN2407366Y Multifunctional power transformer and line break alarm
11/22/2000CN2407365Y Voltage tester for uses in day and night
11/22/2000CN1274086A Both AC and DC detecting and control device with giant magnetoelectric resistance effect
11/21/2000US6150967 Semiconductor integrated circuit
11/21/2000US6150851 Charge transfer amplifier circuit, voltage comparator, and sense amplifier
11/21/2000US6150850 Chopper type comparator
11/21/2000US6150797 Charge and discharge control circuit with function detecting charge and discharge current and chargeable power supply unit
11/16/2000WO2000069042A1 Adaptive sampling rate based on power system frequency
11/16/2000WO2000020879A9 Imaging using spatial frequency filtering and masking
11/16/2000DE19915593A1 Circuit arrangement for determination of the average current through an inductive component especially for use in automotive applications, such as actuators or control valves, has a parallel connected low pass filter
11/15/2000CN2406330Y Water-controlled ac. contactor for electric alarming electric leakage of electric water-heater
11/14/2000US6148267 Method and apparatus for transmission line phase angle comparisons
11/14/2000US6147847 Circuit arrangement for detecting the current of a current conductor in order to activate electronically controllable tripping devices
11/14/2000US6147521 Detector of range of supply voltage in an integrated circuit
11/14/2000US6147518 Current comparator
11/14/2000US6147499 Instrument for measuring voltages of cells
11/14/2000US6147486 Device for analyzing an alternating voltage or current including a variable D.C. component
11/14/2000CA2210857C Improved loss of potential determination for use in protective relays for electric power systems
11/14/2000CA2173142C Method and device for measuring an electrical alternating quantity with temperature compensation
11/09/2000WO2000067272A1 Reed relay switches
11/09/2000WO2000067040A1 Current sensor working in accordance with the compensation principle
11/09/2000DE19918042A1 Schaltungsanordnung zur Unterstromerkennung an einem MOS-Leistungstransistor Circuit arrangement for current detection in a MOS power transistor
11/09/2000DE10018220A1 System for remote measurement of current and voltage in electrical power networks has current converter at nearby measurement point in leads to remote point, impedance balancing unit
11/08/2000CN2405228Y Universal electric testing device having sound control device
11/08/2000CN1272676A Electric current mutual-inductor
11/08/2000CN1272628A Cross digital peak value detector
11/07/2000US6144234 Sample hold circuit and semiconductor device having the same
11/07/2000US6144232 Chopper type voltage comparing circuit capable of correctly determining output polarity, and voltage comparing method
11/03/2000CA2283363A1 Synchronous linear machine for protective relaying
11/02/2000EP1048954A2 An interleaved digital peak detector
11/01/2000CN2404268Y Visual voltage regulator for vehicle
10/2000
10/31/2000US6141196 Method and apparatus for compensation of phasor estimations
10/31/2000US6141092 Method and apparatus for measuring a flicker level
10/31/2000US6140831 Apparatus and methods selectively deriving a boosted voltage exceeding an internal voltage
10/31/2000US6140823 Method and apparatus for measuring a transfer impedance of shielded devices and common mode currents in shieldings
10/26/2000WO2000063930A1 Input circuit for relatively high current ac signals to be monitored
10/26/2000WO2000063707A1 Floating plate voltage monitor
10/26/2000WO2000063057A1 Current sensor
10/26/2000DE19917910A1 Schaltungsanordnung zur Strom-Schwellwerterkennung Circuit arrangement for current-threshold detection
10/25/2000EP1047174A1 Battery protection circuit
10/25/2000EP1046920A2 Circuit for current threshold detection
10/25/2000EP1046919A2 Circuit for low current detection in a MOS power transistor
10/25/2000CN2403031Y Sine wave high-speed vector measuring device
10/25/2000CN1057839C Method and apparatus for measurement of alternating voltage, alternating current and phase angle of testing signal
10/24/2000US6137285 Electrical voltage tester
10/24/2000US6137284 Method and apparatus for detecting supply voltage
10/24/2000US6137271 Automatic polarity exchange circuit with current detection feedback capabilities
10/19/2000WO2000062084A1 Apparatus and method for electrical measurements on conductors
10/19/2000DE19916686A1 Input circuit for monitoring signals e.g. for approximation initiators has discharge circuit connected between AC input terminals connected to power supply line
10/18/2000EP1045251A2 Voltage detecting circuit
10/18/2000EP1045226A1 Signal correction apparatus and signal correction method
10/18/2000CN2401999Y Short circuit grounding wire with electricity detecting function
10/18/2000CN1270316A High-speed synchronous data acquiring and digital signal processing board
10/17/2000US6133742 Multi-pulse sampling of signals using electrostatic force sampling
10/17/2000US6133723 Fault indicator having remote light indication of fault detection
10/12/2000WO2000060367A1 Insulator support current sensor
10/12/2000WO2000060366A1 Current meter
10/12/2000WO2000060326A1 Digital phase sensitive rectification of ac driven transducer signals
10/12/2000WO2000036425A3 Fiber optic current sensor having rotation immunity
10/12/2000WO2000017984A9 Energy management system and method
10/12/2000DE19914772A1 Strommeßaufnehmer Strommeßaufnehmer
10/12/2000DE19912410A1 Meßverfahren für eine Hochspannungsdurchführung und geeignete Meßanordnung Methods of measurement of a high-voltage bushing and suitable measuring device
10/12/2000CA2368901A1 Current meter
10/11/2000EP1042867A1 Differential comparator with stable switching threshold
10/11/2000EP1042679A1 Electronic circuit for monitoring voltage variation
10/11/2000EP1042678A2 Method for defining instantaneous value of current of pulse-controlled inductive load
10/11/2000CN1269510A High-precision high-isolating current detection method
10/10/2000US6129459 Apparatus for analyzing radiating electromagnetic wave from multilayer substrate
10/05/2000WO2000059101A1 Method and apparatus for controlling pulse width modulation device
10/05/2000DE19924416C1 Current detection device for pulse width modulated electronic setting elements e.g. for drive regulator, uses control device for switching gate unit with 2 transistors for measuring current at discrete intervals
10/05/2000DE19910801A1 Vorrichtung und Verfahren zur Strommessung Apparatus and method for measuring current
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