| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 03/17/2004 | EP1397694A1 Method for monitoring a power supply of a control unit in a motor vehicle |
| 03/17/2004 | EP1397693A1 Measuring devices |
| 03/16/2004 | US6708124 Impulsive transient detection and data acquisition coprocessor |
| 03/16/2004 | US6707287 Electrical quantity sensor |
| 03/11/2004 | WO2004021021A2 Method and circuit arrangement for current measurement |
| 03/11/2004 | WO2003025596A3 Impulsive transient hardware simulation |
| 03/11/2004 | DE10240243A1 Current measurement arrangement, comprising two current sensors for low and high current ranges, has zero point drift compensation based on combined evaluation of current measurements from both sensors |
| 03/11/2004 | DE10240242A1 Contactless current sensor has a field direction changing coil that is energized prior to a current measurement so that remanence effects are negated and accurate low-current measurements can be made |
| 03/11/2004 | DE10117643B4 Verfahren zur Ermittlung der Größe einer Netzeingangsspannung Method for determining the size of a mains input voltage |
| 03/10/2004 | CN1480735A Circuit for detecting low power of supplied voltage |
| 03/10/2004 | CN1480734A Circuit for testing low voltage of input voltage of modem |
| 03/10/2004 | CN1141596C Burn-out fault detecting method and equipment |
| 03/10/2004 | CN1141587C Current sensing circuit |
| 03/09/2004 | US6703938 Electrical panel safety monitor |
| 03/09/2004 | US6703854 Burn-in apparatus having average voltage calculating circuit |
| 03/09/2004 | US6703822 Circuit for detecting a current passing through a consumer |
| 03/04/2004 | WO2004019477A2 Input filter for a.c. motor phase current sensing |
| 03/04/2004 | US20040041573 Method and circuit for measuring a voltage or a temperature and for generating a voltage with any predeterminable temperature dependence |
| 03/04/2004 | US20040041569 Voltage measuring circuit of battery pack |
| 03/04/2004 | US20040041555 Voltage peak measurement with digital memory |
| 03/03/2004 | EP1393443A2 Overcurrent detection and protection apparatus for switching element |
| 03/03/2004 | CN2605577Y Power-off alarm for rural electric network |
| 03/03/2004 | CN1479423A Low voltage digital relay |
| 03/03/2004 | CN1479163A Device and method for judging projector lamp residual service life of projector |
| 03/03/2004 | CN1140950C Cell voltage detection circuit, and method of detecting cell voltage |
| 03/03/2004 | CN1140814C Battery voltage measuring device |
| 03/03/2004 | CN1140810C Full-wave level detector of integrated circuit |
| 03/03/2004 | CN1140809C Automatic power turn-on circuit for battery-powered voltage measurement apparatus |
| 03/03/2004 | CN1140806C Voltage measurement instrument having transient overvoltage input protection |
| 03/02/2004 | US6700416 Input buffer and method for voltage level detection |
| 02/26/2004 | WO2004017078A1 Adaptive voltage monitoring arrangement |
| 02/26/2004 | US20040039537 Arrangements to detect and respond to disturbances in electrical power systems |
| 02/25/2004 | EP1391962A1 Voltage measuring circuit of battery pack |
| 02/25/2004 | EP1390769A1 High-frequency electrical signal sampling device |
| 02/25/2004 | EP1390766A1 14/42-volt automotive circuit tester |
| 02/25/2004 | EP1261879B1 Current transformer for a compensating current sensor |
| 02/25/2004 | CN1477772A Inrush current limiting circuit for pulse frequency modwlation to control charge pump |
| 02/24/2004 | US6696888 Amplifier with feedback compensation |
| 02/24/2004 | US6696818 Method and unit for computing charging efficiency and charged electrical quantity of battery |
| 02/19/2004 | WO2003058860A3 System for peak detection among multiple signals |
| 02/19/2004 | US20040034512 Fast and accurate AC RMS and DC measurement |
| 02/19/2004 | US20040034500 Displaying a number of measurement curves |
| 02/19/2004 | US20040034498 Grouping components of a measurement system |
| 02/19/2004 | US20040034463 Sensor for monitoring electronic detonation circuits |
| 02/19/2004 | US20040032701 Current limiting circuit and output circuit including the same |
| 02/19/2004 | US20040032358 Interleaving AD conversion type waveform digitizer |
| 02/19/2004 | US20040032336 Method and apparatus for detecting and recording episodic overloads in a circuit |
| 02/19/2004 | DE10237920B3 Current measuring method with compression of measured analogue signal before A/D conversion and transmission from high potential measuring point to earth point |
| 02/18/2004 | CN1475809A Current transfermer system |
| 02/18/2004 | CN1475808A Power position detecting circuit |
| 02/17/2004 | US6694270 Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems |
| 02/17/2004 | US6693404 AC current detecting device for inverter apparatus and AC current detecting method therefor |
| 02/12/2004 | US20040027758 Currents-sensing switching circuit |
| 02/12/2004 | US20040027175 Current-voltage converter for the measurement of weak current capable of working under strong x or radiation |
| 02/12/2004 | DE4016316B4 Auswerteschaltung für die Signale einer Signalquelle Evaluation for the signals to a signal source |
| 02/11/2004 | CN2603399Y Measuring card for three-phase ac power |
| 02/11/2004 | CN2603398Y Distribution facilities operation indicator |
| 02/11/2004 | CN2603397Y Automatic power cut off alarm for storey |
| 02/11/2004 | CN1138151C Method and device for detecting zero-line deficiency of three-phase circuit |
| 02/11/2004 | CN1138150C According to load current compensation type voltage sampling measurement circuit |
| 02/10/2004 | US6688715 Low impedance diagnostic for gun driver and method |
| 02/05/2004 | US20040021578 Low voltage testing and illuminating device |
| 02/05/2004 | DE69627176T2 Aut0matische spannungsdetektion in anwendungen mit mehreren spannungen Aut0matische voltage detection in applications with multiple voltages |
| 02/05/2004 | DE19946935B4 Vorrichtung zur induktiven Strommessung mit mindestens einem Differenzsensor Device for inductive current measurement with at least one differential sensor |
| 02/04/2004 | EP1386347A2 Microelectromechanical system (mens) device |
| 02/04/2004 | CN2602381Y Generator accumulator cell aptitude discretion equipment |
| 02/04/2004 | CN1473371A Voltage measuring circuit of battery pack |
| 02/04/2004 | CN1137517C Semiconductor device |
| 02/04/2004 | CN1137386C Signal sampling method and signal detection display system |
| 02/03/2004 | US6686782 Power supply voltage detection circuit |
| 01/29/2004 | WO2004010158A1 Method and device for voltage measurement of an ac power supply |
| 01/29/2004 | US20040018419 Control for battery pack |
| 01/29/2004 | US20040017205 Method for monitoring a power supply of a control unit in a motor vehicle |
| 01/29/2004 | US20040017173 Process for measuring phase currents of a device for controlling electric motors made with IMS technology or the like embedding, for such measure, resistance and temperature control device for power transistors |
| 01/29/2004 | DE4239318B4 Vorrichtung zum Erfassen des Einschaltens einer Versorgungsspannung Apparatus for detecting the switching on of a supply voltage |
| 01/28/2004 | EP1385360A1 Inverter system and fault current detection method therefor |
| 01/28/2004 | EP1385207A1 Process for measuring phase currents of a device for controlling electric motors made with ims technology or the like embedding, for such measure, resistance and temperature control device for power transistors |
| 01/28/2004 | EP1385013A1 Multifunction intelligent electronic device and method |
| 01/28/2004 | EP1384649A2 Vehicle steering control system |
| 01/28/2004 | CN1136457C Automatic sampling and correcting method for voltage of battery |
| 01/27/2004 | US6683447 Electro-optic apparatus for measuring signal potentials |
| 01/22/2004 | WO2004008620A1 Three-phase current control device |
| 01/22/2004 | WO2004008159A2 Conductor tracing system |
| 01/22/2004 | US20040015094 Measuring device |
| 01/22/2004 | US20040012381 Inverter system |
| 01/22/2004 | DE10327240A1 Hochgeschwindigkeitsmeßsystem, das einen optimalen Meßbereich auf einer Abtastwert-nach-Abtastwert-Basis auswählt Hochgeschwindigkeitsmeßsystem that selects an optimal range on a sample-by-sample basis |
| 01/21/2004 | EP1382972A2 Audible alarm system to prevent earthing in high-voltage cells |
| 01/21/2004 | CN2600819Y Device for measuring voltage and current of high-tension switch equipment |
| 01/20/2004 | US6681199 Peak time detecting apparatus and method |
| 01/20/2004 | US6680620 Method for timed measurements of the voltage across a device in the charging circuit of a piezoelectric element |
| 01/15/2004 | US20040008135 Interleaving A/D conversion type waveform digitizer module and a test apparatus |
| 01/15/2004 | US20040008058 Impedance comparison integrator circuit |
| 01/15/2004 | US20040008018 Electrical circuit tracing and identifying apparatus and method |
| 01/14/2004 | EP1380068A2 Ultrafast sampler with coaxial transition |
| 01/14/2004 | EP1218758B1 Automatic monitoring of high voltage signals |
| 01/14/2004 | CN2599829Y Connecting device with earthing function |
| 01/14/2004 | CN2599778Y Alarm type earthing bar |
| 01/14/2004 | CN2599594Y Coal mine under wall direct current overhead wire power off warning apparatus |
| 01/14/2004 | CN2599593Y AC domestic electricity-proof center |
| 01/14/2004 | CN2599591Y Multipurpose digital display device |