| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 08/29/2012 | CN102043088B Overcurrent detection circuit |
| 08/29/2012 | CN101900755B Phase automatic compensating system and method of current and voltage synchronous sampling |
| 08/29/2012 | CN101789681B Power supply apparatus with open loop protection |
| 08/29/2012 | CN101738520B Power-on information display apparatus |
| 08/29/2012 | CN101470653B Electric voltage allowance test device |
| 08/29/2012 | CN101368992B Test system and method of video signal generator |
| 08/28/2012 | US8254402 Programmable high-speed cable with printed circuit board and boost device |
| 08/28/2012 | US8253366 Signal status diagnosing device for control actuator as driven object |
| 08/23/2012 | WO2012110670A1 System and method for monitoring the waveform of the voltage of the electrical grid |
| 08/23/2012 | WO2012110418A1 Method and system for measuring electrical quantity in electrical network |
| 08/23/2012 | WO2012109949A1 Piezoelectric current sensor |
| 08/23/2012 | US20120215468 Method and system for detecting power supply source electrical current capacity |
| 08/23/2012 | US20120215467 Automatic detection of ground line in a video cable |
| 08/23/2012 | US20120212213 Non-invasive energy consumption monitoring |
| 08/23/2012 | US20120212212 Voltage detecting circuit |
| 08/23/2012 | DE10304396B4 Elektrische Anzeige- und Prüfschaltung Electrical display and test circuit |
| 08/23/2012 | DE102012202269A1 Verfahren und Vorrichtung zum Erfassen des Vorhandenseins einer Sicherheitserdung Method and apparatus for detecting the presence of a ground lead |
| 08/23/2012 | DE102011004516A1 Electric circuit for use with lithium ion battery system for diagnosis of switching contacts in battery-powered road vehicle, has unit for generating and measuring voltage drop via resistance element |
| 08/23/2012 | CA2827212A1 System and method for monitoring the electric network voltage waveform |
| 08/22/2012 | EP2490035A1 Self-diagnosis method and system for wireless data service device |
| 08/22/2012 | EP2490031A1 Method and system for measuring an electrical quantity in an electrical network |
| 08/22/2012 | EP2490030A2 Voltage detecting circuit |
| 08/22/2012 | EP2489125A2 Low power brown out detector |
| 08/22/2012 | CN202396069U Road lamp lighting power saver control device |
| 08/22/2012 | CN202393893U Voltage detection system of single sheet of fuel cell |
| 08/22/2012 | CN202393887U Device for detecting property of battery of locomotive remote controller |
| 08/22/2012 | CN202393855U LCR tester |
| 08/22/2012 | CN202393846U Multicircuit electric parameter inspector |
| 08/22/2012 | CN202393841U Detection device and system for action voltage of track switch machine |
| 08/22/2012 | CN202393831U Instrument test circuit |
| 08/22/2012 | CN202393824U Arrester signal acquisition device for protecting series compensation capacitor |
| 08/22/2012 | CN202393823U Installation mechanism of digital display ampere-voltage meter |
| 08/22/2012 | CN202393822U Transformer core current on-line monitoring device provided with internal sensor |
| 08/22/2012 | CN202393821U Low voltage alarm device for battery pack |
| 08/22/2012 | CN202393820U Inductive test pen |
| 08/22/2012 | CN202393819U Novel AC high-low voltage electroscope |
| 08/22/2012 | CN202393818U Device for verifying electrified earth wire |
| 08/22/2012 | CN202393817U Flash pylon indicator based on induction energy storage |
| 08/22/2012 | CN202393816U High-voltage electrified display device |
| 08/22/2012 | CN202393815U Multi-channel high-voltage low-current detection circuit |
| 08/22/2012 | CN202393814U Sampling circuit with operation amplification function |
| 08/22/2012 | CN202393813U DC system feeder line grounding signal lamp light alarm apparatus |
| 08/22/2012 | CN202393812U Signal measuring circuit of superconducting magnet coil |
| 08/22/2012 | CN202393811U On-line monitoring apparatus for lightning arrester for protecting series compensation capacitor |
| 08/22/2012 | CN202393810U Magnetic concentrating ring device based on openable Hall current sensor and sensor |
| 08/22/2012 | CN202393809U Armature current sampling circuit |
| 08/22/2012 | CN202393808U On-line monitoring device with external sensor for transformer core current |
| 08/22/2012 | CN202393807U Optical current transformer shielding cover |
| 08/22/2012 | CN202393806U Measuring instrument meter with independent input end voltage jack |
| 08/22/2012 | CN202393805U Current sampling circuit with constantan wire |
| 08/22/2012 | CN202393804U Pulse peak value sampling device |
| 08/22/2012 | CN102647169A Noise reduction device for detecting weak voltage signals of cable |
| 08/22/2012 | CN102645905A Metering and timing chip |
| 08/22/2012 | CN102645635A Device and method for testing corresponding relation between open circuit voltage (OCV) and system on chip (SOC) |
| 08/22/2012 | CN102645633A Online diagnosis device of motor faults based on FPGA+ARM (Field Programmable Gate Array+Accumulator Read-in Module) |
| 08/22/2012 | CN102645612A Method for distinguishing back flashover faults and lightning shielding failure faults of power transmission line |
| 08/22/2012 | CN102645604A Method for detecting interconnection wire full-open circuit defects by current difference values |
| 08/22/2012 | CN102645602A Online detection method of magnetic biasing of transformer based on attached coil |
| 08/22/2012 | CN102645593A Method and device for determining public electrode voltage of liquid crystal display |
| 08/22/2012 | CN102645578A Automatic simulation calibrating method and device for sensor |
| 08/22/2012 | CN102645577A Digital frequency selection measuring system capable of resisting one hundred thousand times of interference |
| 08/22/2012 | CN102645576A Device and method for detecting zero crossing point of inductive current |
| 08/22/2012 | CN102645575A Method and apparatus for detecting existence of safety ground |
| 08/22/2012 | CN102645574A On-site transient overvoltage measuring method based on network transfer function calculation |
| 08/22/2012 | CN102645573A Noncontact ultrahigh voltage electricity detector |
| 08/22/2012 | CN102645572A Voltage drop measuring device for long-distance superconducting power transmission cable |
| 08/22/2012 | CN102645571A Detection circuit and electronic terminal |
| 08/22/2012 | CN102645570A Hand-held electronic equipment-based galvanometer |
| 08/22/2012 | CN102645569A Measuring circuit and measuring method of fluctuation of threshold voltage of MOS (Metal Oxide Semiconductor) device |
| 08/22/2012 | CN102645568A Wireless synchronization method of wave recording and signal measurement |
| 08/22/2012 | CN102645559A Clamp |
| 08/22/2012 | CN101958262B Failure detection method and device |
| 08/22/2012 | CN101957406B Method for detecting light bar and detection machine board |
| 08/22/2012 | CN101923110B Method and device for detecting abnormal current of circuit |
| 08/22/2012 | CN101865963B New quick detection method for relay protective device |
| 08/22/2012 | CN101769954B Voltage detecting circuit for multiple serial batteries |
| 08/22/2012 | CN101762741B Monitoring and orientation system of pollution sources of electrical energy quality |
| 08/22/2012 | CN101718820B Power distribution transformer monitoring terminal and method for calculating current complex power precision thereof |
| 08/22/2012 | CN101655516B Main-circuit input current detection device |
| 08/22/2012 | CN101499730B Apparatus and method for detecting switch current of power converter |
| 08/22/2012 | CN101488656B Methods for common mode voltage-based AC fault detection, verification and/or identification |
| 08/22/2012 | CN101292164B A sampling module and a method of sampling one or more analogue characteristics of a power transmission system |
| 08/21/2012 | US8248058 Signal testing apparatus for load control system |
| 08/21/2012 | US8248056 Buried object locator system employing automated virtual depth event detection and signaling |
| 08/16/2012 | WO2012109680A2 Hysteretic current mode controller for a bidirectional converter with lossless inductor current sensing |
| 08/16/2012 | WO2012107845A1 Wire manager with current and voltage sensing |
| 08/16/2012 | WO2012107325A1 Method and apparatus for measuring current |
| 08/16/2012 | WO2012106953A1 Device and method for detecting state of overload and overcurrent protector |
| 08/16/2012 | WO2012106816A1 Power measurement device |
| 08/16/2012 | US20120209552 Intelligent electronic device with enhanced power quality monitoring and communication capabilities |
| 08/16/2012 | US20120209537 Electronic device |
| 08/16/2012 | US20120206127 Measuring and controlling wafer potential in pulsed rf bias processing |
| 08/16/2012 | US20120206126 Capacitive coupling based sensor |
| 08/16/2012 | DE102012100830A1 Leckstromerfassungsvorrichtung Leakage current detecting device |
| 08/16/2012 | DE102012100828A1 Leckstromerfassungsvorrichtung Leakage current detecting device |
| 08/16/2012 | DE102011003897A1 Verfahren und Vorrichtung zur Strommessung Method and apparatus for current measurement |
| 08/16/2012 | CA2863993A1 Power measurement device |
| 08/15/2012 | EP2486414A2 Method and device for determining an input voltage on a local network station of a power network |
| 08/15/2012 | CN202384569U AC voltage measurement induction terminal |
| 08/15/2012 | CN202383216U Detection tooling for transformer and rectifier |