| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 12/11/2002 | EP1265363A2 Adjustable temperature-compensated threshold circuit with trip-points exceeding the given supplies |
| 12/11/2002 | EP1265267A2 RF power probe head with a thermally conductive bushing |
| 12/11/2002 | EP1265075A2 Floating analog signal transmission having a calibration function |
| 12/11/2002 | CN2525715Y Concentrator with power self adaptive function |
| 12/11/2002 | CN2525528Y Digital volume compensating instrument |
| 12/11/2002 | CN1384525A 法拉第装置 Faraday device |
| 12/10/2002 | US6492849 Supply voltage detection circuit |
| 12/10/2002 | US6492831 Current measuring method and current measuring apparatus |
| 12/10/2002 | US6492721 High-voltage signal detecting circuit |
| 12/05/2002 | WO2002097940A2 Overcurrent detection and protection apparatus for switching element |
| 12/05/2002 | WO2002097451A1 14/42-volt automotive circuit tester |
| 12/05/2002 | WO2002080124A3 Audible alarm system to prevent earthing in high-voltage cells |
| 12/05/2002 | WO2002052284A3 Electrical quantity sensor |
| 12/05/2002 | US20020184326 System and method for providing network interfaces to instruments without networking capabilities |
| 12/05/2002 | US20020180418 Current sense amplifier and method |
| 12/05/2002 | DE10123425A1 Circuit arrangement for processing digital input signals has circuit supplied with high or low reference potential depending on current direction between signal source and circuit arrangement |
| 12/05/2002 | DE10117643A1 Determining magnitude of mains input voltage, involves determining mains transformer internal impedance from quotient of secondary voltage/current change resulting from applying load |
| 12/04/2002 | EP1263112A2 Charging circuits for portable communication terminals |
| 12/04/2002 | EP1262784A1 Battery voltage detection device |
| 12/04/2002 | EP1261879A2 Current transformer for a compensating current sensor |
| 12/04/2002 | EP1153305B1 Current measuring device and corresponding method |
| 12/04/2002 | CN2524247Y Voltage tester assembly |
| 12/04/2002 | CN1382993A Remote monitor method and system for instantaneous voltage dropping of electric power network |
| 12/03/2002 | US6489812 Temperature-compensated small signal peak detector |
| 12/03/2002 | US6489786 Non-isolated type voltage sensor |
| 12/03/2002 | US6489693 Method and device for current monitoring in a current supply system |
| 12/03/2002 | CA2322257C Battery voltage measuring device |
| 11/28/2002 | WO2002095863A1 Voltage measuring circuit of battery pack |
| 11/28/2002 | WO2002095430A2 Test circuit |
| 11/28/2002 | US20020175688 Method and an apparatus for measuring the ratio of the amplification factor of a signal level normalizer |
| 11/27/2002 | EP1260888A2 Arithmetic unit for correcting detection output in which corrected operation output is sensitive to mechanical factors |
| 11/27/2002 | CN2522866Y Electric energy mass on-line monitoring apparatus based on virtual instrument technology |
| 11/27/2002 | CN2522865Y Voice anti-fault warning device |
| 11/27/2002 | CN2522864Y Induction-type high-voltage charge displaying device for cable |
| 11/27/2002 | CN1381954A Detecting circuit of wide dynamic range supplied by small emitter |
| 11/27/2002 | CN1381732A Voltage (potential) measurer |
| 11/27/2002 | CN1381731A Method and device for measuring sinusoidal signal instantaneous power |
| 11/27/2002 | CN1095246C Power-out reset system |
| 11/26/2002 | US6487670 Methods and systems for detecting and for responding to connection of a battery to a logic device |
| 11/26/2002 | US6486952 Semiconductor test apparatus |
| 11/26/2002 | US6486635 Monitor signal output circuit, battery pack, battery voltage monitor circuit, battery system, apparatus, battery voltage monitor method, and battery voltage monitor program storage medium |
| 11/21/2002 | WO2002093183A1 Method for detecting current transformer saturation |
| 11/21/2002 | WO2002093182A1 High-frequency electrical signal sampling device |
| 11/21/2002 | US20020171433 Voltage measuring apparatus for sheathed power cable |
| 11/20/2002 | EP1257836A1 Electric arc monitoring systems |
| 11/20/2002 | EP1110094B1 Device and method for creating one or more magnetic field gradients through a straight conductor |
| 11/20/2002 | CN2521621Y Discharge indicating lamp |
| 11/20/2002 | CN2521620Y 1.5V booster induction test pencil |
| 11/20/2002 | CN2521619Y Outdoor low-voltage reactive power compensation current testing device |
| 11/20/2002 | CN1380622A Method for operating automatic trade information system |
| 11/20/2002 | CN1094594C Multi-stage semi-differential ac oscillographic timing potentiometer |
| 11/19/2002 | US6483501 Load current compensated type voltage sampling circuit |
| 11/19/2002 | US6483379 Input circuit for relatively high current AC signals to be monitored |
| 11/14/2002 | US20020169807 Arithmetic unit for correcting detection output in which corrected operation output is sensitive to mechanical factors |
| 11/14/2002 | US20020167373 Ultrafast sampler with non-parallel shockline |
| 11/14/2002 | US20020167303 Non-contact voltage measurement method and device, and detection probe |
| 11/14/2002 | US20020167302 Surge current measurement |
| 11/14/2002 | US20020167300 Method for measuring phase current for inverter control apparatus using single current sensor and apparatus therefor |
| 11/14/2002 | DE10119519A1 Demodulator und Sensorvorrichtung Demodulator and sensor device |
| 11/14/2002 | DE10042585C1 Schaltungsanordnung zur Erfassung des Stromes in einem Lasttransistor Circuit arrangement for detecting the current in a load transistor |
| 11/13/2002 | EP1256004A1 Voltage sensor |
| 11/13/2002 | CN1379301A 电压检测电路 Voltage detection circuit |
| 11/12/2002 | US6480040 Device for the detection of a high voltage greater than a supply voltage |
| 11/12/2002 | US6479979 Opto-electric device for measuring the root-mean-square value of an alternating current voltage |
| 11/12/2002 | US6479975 MOS current sense circuit |
| 11/12/2002 | CA2255321C Method and device for discrete-time reactance measurement |
| 11/07/2002 | DE10118027A1 Battery measurement terminal with external start tie lug, monitors charging state of a vehicle battery by checking the total current drawn from the battery via all connections to the battery terminal |
| 11/06/2002 | EP1254376A1 Method for detecting the current density distribution in a fuel cell stack |
| 11/06/2002 | EP1101123B1 Particle beam current monitoring technique |
| 11/06/2002 | CN2519994Y Residual current alarm circuit breaker |
| 11/06/2002 | CN1378649A Sensor for detecting high-frequency oscillations of voltage and arrangement of sensor |
| 11/06/2002 | CN1378087A 数字电流差分系统 Digital current differential system |
| 11/06/2002 | CN1093950C Voltage reference apparatus, voltameter, battery voltage detection apparatus and wireless communication device |
| 11/05/2002 | US6477553 Measurement scale for non-uniform data sampling in N dimensions |
| 11/05/2002 | CA2150635C Current measurement circuit comprising a mutually coupled transformer and an integration circuit |
| 10/31/2002 | WO2002087083A1 Digital method and system for determining the instantaneous phase and amplitude of a vibratory accelerometer and other sensors |
| 10/31/2002 | US20020158684 Noise suppression circuitry and method |
| 10/31/2002 | US20020158673 Power supply detection circuitry and method |
| 10/31/2002 | US20020158650 Device testing using a holding-circuit |
| 10/31/2002 | US20020158638 Method for compensating for measuring error in detecting current in an energy sroting means |
| 10/31/2002 | US20020158634 Voltage detection device for a battery package |
| 10/31/2002 | US20020158623 Full wave envelope detector |
| 10/31/2002 | US20020158615 System and method for current sensing |
| 10/31/2002 | DE10120147A1 Circuit for detection of short voltage interruptions in supply voltage produces voltage reversal in comparator input to initiate voltage interruption signal |
| 10/31/2002 | DE10120142A1 Detector circuit for detection of voltage spikes compares stored mean value of supply voltage with actual value |
| 10/30/2002 | EP1253430A1 Procedure and device for current monitoring in a power distribution network |
| 10/30/2002 | EP1252526A1 Current detector and current measuring apparatus including such detector with temperature compensation |
| 10/30/2002 | EP1161690B1 Low error, switchable measurement lead detect circuit |
| 10/30/2002 | CN2519285Y Excess voltage protector action recording apparatus |
| 10/30/2002 | CN2519284Y Mutual complementing differential peak value detecting circuit |
| 10/29/2002 | US6472880 Accurate voltage measurement system using relay isolated circuits |
| 10/29/2002 | US6472861 Peak detector |
| 10/25/2002 | CA2383822A1 Full wave envelope detector |
| 10/24/2002 | WO2002084786A2 Ultrafast sampler with coaxial transition |
| 10/24/2002 | US20020153937 Input system for variable gain amplifier having transconductance stages with feedforward paths diverted to AC ground |
| 10/24/2002 | US20020153919 Potential sensor for detecting voltage of inspection target at non-contact condition to attain higher speed of inspection |
| 10/24/2002 | US20020153898 Apparatus for detecting voltage and current status in electric power system |
| 10/23/2002 | EP1251471A2 Fire alarm system with smoke particle discrimination |
| 10/23/2002 | EP1251356A2 Method and apparatus for determining the instantaneous power of a sinusoidal signal |
| 10/23/2002 | EP1251355A2 Digital quasi-rms detector |