| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 07/21/2004 | CN1514253A Current mutual induction sampliing circuit and its resetting method |
| 07/21/2004 | CN1158736C Automatic pole exchanging circuit with current detecting feedback function |
| 07/21/2004 | CN1158532C Current, voltage measuring device and telephone terminal using such current measuring device |
| 07/20/2004 | US6765516 Method and apparatus for root-mean-square converter output signal processing |
| 07/20/2004 | US6765403 Test circuit and test method for protecting an IC against damage from activation of too many current drawing circuits at one time |
| 07/20/2004 | US6765390 Diagnostic wiring verification tester |
| 07/15/2004 | US20040138836 Apparatus and method for calculating offset value for an electric sensor |
| 07/15/2004 | US20040138835 Push communications architecture for intelligent electronic devices |
| 07/15/2004 | US20040136255 Current integrating sense amplifier for memory modules in RFID |
| 07/15/2004 | US20040135590 Impedance monitoring system and method |
| 07/14/2004 | EP1175623B1 Insulator support current sensor |
| 07/14/2004 | CN2625907Y A pulse data aquisition unit |
| 07/14/2004 | CN1512524A Changing current ratio of 10KV and higher high-voltage current transformer under live condition |
| 07/13/2004 | US6763314 AC defect detection and failure avoidance power up and diagnostic system |
| 07/13/2004 | US6762627 Switched capacitor peak detector with variable time constant asymmetrical filtering |
| 07/13/2004 | US6762590 Battery power source device and current detection method therefor |
| 07/08/2004 | WO2004057358A1 Non-contact current detection device |
| 07/08/2004 | US20040133378 Correlating power signatures with automated equipment |
| 07/08/2004 | US20040133367 Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems |
| 07/08/2004 | US20040130359 Current sensing circuit and method of a high-speed driving stage |
| 07/08/2004 | US20040130355 High-voltage detecting circuit |
| 07/08/2004 | US20040130354 Method and device for monitoring the function of an output stage having pulse width modulation |
| 07/08/2004 | US20040129490 Vehicle steering control system |
| 07/07/2004 | EP1435004A2 Test circuit |
| 07/07/2004 | CN1511376A Overcurrent detection and protection apparatus for switching element |
| 07/07/2004 | CN1511369A Method of detecting motor current and motor control device |
| 07/07/2004 | CN1510428A Module power supply tester |
| 07/07/2004 | CN1510424A 电压检测电路 A voltage detecting circuit |
| 07/06/2004 | US6759878 Voltage comparator circuit and substrate bias adjusting circuit using same |
| 07/06/2004 | US6759852 VDD detection path in power-up circuit |
| 07/06/2004 | US6759851 Method and apparatus for control and fault detection of an electric load circuit |
| 07/01/2004 | US20040124885 Peak detection circuit with double peak detection stages |
| 07/01/2004 | DE19930149B4 Verfahren zum Messen einer elektrischen Spannung und Anordnungen zur Durchführung der Verfahren A method for measuring an electrical voltage and arrangements for carrying out the method |
| 06/30/2004 | EP1433255A2 Control device |
| 06/30/2004 | CN2622710Y Digital indicator for duty ratio of pulse power output voltage |
| 06/30/2004 | CN1508550A 信号处理装置 Signal processing means |
| 06/24/2004 | WO2004053944A2 Fast localization of electrical failures on an integrated circuit system and method |
| 06/24/2004 | WO2004053511A1 Current sensor and battery remaining power sensing system |
| 06/24/2004 | US20040119460 Minimally invasive device current analyzer |
| 06/24/2004 | US20040119457 Peripheral device receiver detection in a high noise environment |
| 06/24/2004 | US20040119456 Apparatus for accessing telecommunications networks |
| 06/24/2004 | DE20320394U1 Electrical operating and test and display circuit, especially for medium and high voltage switching installations, where the power supply is derived from a non-electrical source and converted to electrical energy as required |
| 06/23/2004 | EP1432110A1 Phase current detector |
| 06/23/2004 | EP1432107A2 Current sensor using mirror mosfet and pwm inverter incorporating the same |
| 06/23/2004 | EP1430315A2 High voltage transient damage assessment in high speed power systems |
| 06/23/2004 | EP1430314A1 A minimum detector |
| 06/23/2004 | EP1198758A4 Measurement scale for non-uniform data sampling in n dimensions |
| 06/23/2004 | CN1506687A High-voltage optical fiber electroscope |
| 06/23/2004 | CN1154850C Choppe type voltage comparing circuit and voltage comparing method |
| 06/17/2004 | US20040116080 Time resolved RF plasma impedance meter |
| 06/17/2004 | US20040113681 Voltage sensing circuit |
| 06/17/2004 | US20040113661 Two-level supply voltage detection circuit |
| 06/17/2004 | US20040113630 Voltage detecting circuit |
| 06/16/2004 | EP1429440A2 Apparatus and method for calculating offset value for a current sensor |
| 06/16/2004 | EP1429149A2 A device for detecting a hazardous potential difference between conductor rails of a railway track |
| 06/16/2004 | EP1428309A1 Device for measuring a chopped current |
| 06/16/2004 | EP1428034A2 Impulsive transient hardware simulation |
| 06/16/2004 | CN2620873Y Photoelectric measuring instrument for electric current of high voltage transmission and distribution line |
| 06/16/2004 | CN1504754A Apparatus for measuring leakage current and insulation impedance |
| 06/16/2004 | CN1153978C System for concurrent digital measurement of peak voltage and RMS voltage in high voltage system |
| 06/16/2004 | CN1153976C Apparatus and method for remote current |
| 06/15/2004 | US6751561 Power saving method and apparatus for a portable appliance |
| 06/15/2004 | US6751079 Circuit for the detection of short voltage glitches in a supply voltage |
| 06/15/2004 | US6750683 Power supply detection circuitry and method |
| 06/09/2004 | EP1425592A1 Device indicating voltage presence and electrical appliance comprising same |
| 06/09/2004 | CN2620281Y Live line displaying detector for microelectronic high-voltage, ultrahigh-voltage power system |
| 06/09/2004 | CN1502997A Induction electricity detector |
| 06/09/2004 | CN1502996A Detection isolation and transmission device for voltage and current signal |
| 06/09/2004 | CN1153325C Charging and discharging control circuit |
| 06/08/2004 | US6748344 Method and apparatus employing a scaling factor for measuring and displaying an electrical parameter of an electrical system |
| 06/08/2004 | US6747486 Comparator |
| 06/08/2004 | US6747470 Method and apparatus for on-die voltage fluctuation detection |
| 06/03/2004 | WO2004008159A9 Conductor tracing system |
| 06/03/2004 | DE20301556U1 Differential high voltage converter, for e.g. personal computer-controlled network quality analyzer in electrical power supply, has two identical high-resistance resistors positioned in measurement cable |
| 06/03/2004 | DE19910801B4 Vorrichtung und Verfahren zur Strommessung Apparatus and method for measuring current |
| 06/03/2004 | DE10253865A1 Electrical range detection method for determining electrical ranges characterizing multiphase electrical equipment uses a mathematical model to determine parameters |
| 06/02/2004 | EP1423994A1 Circuit arrangement |
| 06/02/2004 | EP1423715A1 Diagnostics for piezoelectric sensor |
| 06/02/2004 | CN1501088A Method for determining and charactering electric quantity of multiphase electric-technic operating device |
| 06/02/2004 | CN1152261C High-voltage charge indicator with electric field effect |
| 06/01/2004 | US6744391 System for sampling a signal in an electronic instrument using a unipolar A/D converter |
| 06/01/2004 | US6744261 Method and an apparatus for measuring the ratio of the amplification factor of a signal level normalizer |
| 06/01/2004 | US6744249 Method and instrument for measuring a magnetic field, a method for measuring a current waveform, and method for measuring an electric field |
| 06/01/2004 | US6744224 Rush current limiting circuit for a PFM control charge pump |
| 05/27/2004 | WO2004044597A2 Device and method for determining the absence of application of stresses on polyphase electrical transmission lines |
| 05/27/2004 | US20040101228 Fiber-optic current sensor |
| 05/27/2004 | DE10253018A1 Current measuring system for line protection switch has electromagnetic sensor and temperature sensor connected to switching lock moving switch contacts |
| 05/27/2004 | DE10252869A1 Voltage isolation test unit for multiple phase cables has sprung supported measurement electrodes in hinged semicircular ring clamped to insulation |
| 05/26/2004 | EP1421482A2 Network-based system for configuring a measurement system using programs generated based on a user specification |
| 05/26/2004 | EP1421394A1 Impulsive transient detection and data acquisition coprocessor |
| 05/26/2004 | EP1242828B1 Rms-dc converter having gain stages with variable weighting coefficients |
| 05/25/2004 | US6741103 Device using a detection circuit to determine whether an output current thereof is source-induced or load-induced, and method therefor |
| 05/25/2004 | US6741069 Detector for high intensity electrical currents |
| 05/20/2004 | US20040095570 Method for the temperature-compensated, electro-optical measurement of an electrical voltage and device for carrying out the method |
| 05/20/2004 | US20040095146 Measured value acquisition and processing unit for small measuring signals |
| 05/20/2004 | US20040095127 Apparatus for measuring current density of fuel cell |
| 05/20/2004 | US20040095126 Current sensor and overload current protective device comprising the same |
| 05/20/2004 | US20040095125 Current sensors |
| 05/20/2004 | US20040095090 Method of detecting motor current and motor control device |
| 05/19/2004 | EP1224478A4 Highly configurable capacitive transducer interface circuit |