| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 05/12/1998 | US5752167 Radio propagation simulation method, wave field strength inference method and three-dimensional delay spread inference method |
| 05/12/1998 | US5751284 Current signal correction process and device |
| 05/12/1998 | US5751219 Testing instrument with a display element |
| 05/12/1998 | US5751158 Method and apparatus for selectively deriving a boosted voltage exceeding an internal voltage |
| 05/07/1998 | WO1998019172A1 Circuit for the hysteresis-related detection of the threshold value of the peak value of a periodic input signal |
| 05/06/1998 | EP0840432A2 Circuit arrangement for generating a DC voltage |
| 05/06/1998 | EP0840132A2 A device for detecting and indicating potential differences between two bodies |
| 05/06/1998 | CN2280916Y Analogue thunder-lighting impaction voltage measuring instrument |
| 05/06/1998 | CN2280915Y Test instrument for pressure-sensitive protection device |
| 05/06/1998 | CN1180959A Window comparator |
| 05/05/1998 | US5748095 Mini faulted circuit indicator unit |
| 05/05/1998 | US5748017 Method and apparatus for determining linearity of a ramp signal |
| 05/05/1998 | US5747978 Circuit for generating a reference voltage and detecting an under voltage of a supply and corresponding method |
| 05/05/1998 | CA2103278C Multi-layer female component for refastenable fastening device and method of making the same |
| 04/30/1998 | WO1998018014A1 Switching arrangement for monitoring leakage current |
| 04/30/1998 | WO1998018013A2 Energy meter with power quality monitoring and diagnostic systems |
| 04/30/1998 | WO1998007165A3 Magnetic current sensor |
| 04/30/1998 | DE19644181A1 Schaltungsanordnung zur Leckstromüberwachung Circuit arrangement for leakage current monitoring |
| 04/30/1998 | DE19642871A1 Measurement circuit for voltage controller for automatic control of transformer with stage switch |
| 04/29/1998 | EP0838686A2 Self-powered axial current sensor |
| 04/29/1998 | CN2280331Y Electric appliance measuring instrument for teaching purpose |
| 04/28/1998 | US5745233 Voltage detecting circuit |
| 04/28/1998 | US5745114 Graphical display for an energy management device |
| 04/28/1998 | CA2133864C Apparatus for detecting the amplitude and phase of an a.c. signal |
| 04/23/1998 | DE19745218A1 Steuerschaltung und Verfahren zur Steuerung des Schaltens von MOS-Gate-gesteuerten Leistungshalbleiterbauteilen Control circuit and method for controlling the switching of MOS-gated power semiconductor components |
| 04/23/1998 | DE19732671A1 Hysteresis input buffer for semiconductor component |
| 04/23/1998 | DE19632120C1 Voltage monitoring circuit |
| 04/22/1998 | EP0836710A1 Shunt assembly for current measurement |
| 04/22/1998 | EP0752106A4 Method and apparatus for analyzing a waveform |
| 04/22/1998 | CN2279714Y Safety grounding power socket with monitoring device |
| 04/22/1998 | CN2279613Y Detecting device for phase-defect of motor |
| 04/21/1998 | US5742230 Apparatus for triggering a warning device |
| 04/21/1998 | US5742216 Contact making and breaking device and system for measuring low current |
| 04/21/1998 | US5742198 Waveform shaping apparatus |
| 04/21/1998 | US5742197 Boosting voltage level detector for a semiconductor memory device |
| 04/21/1998 | US5742156 Digital process for obtaining a measured parameter from an electric signal |
| 04/21/1998 | CA2004563C Current monitoring |
| 04/16/1998 | WO1998015842A1 Quantisation error reduction |
| 04/16/1998 | DE19640190A1 Elektrische Schaltung zur Ermittlung eines Laststroms An electrical circuit for detecting a load current |
| 04/15/1998 | CN2278941Y High-voltage measuring box |
| 04/15/1998 | CN2278940Y High-voltage sampling sensor |
| 04/15/1998 | CN2278939Y AC and DC clamp-on multifunctional meter |
| 04/14/1998 | US5740064 Sampling technique for waveform measuring instruments |
| 04/14/1998 | US5739692 Device for monitoring voltage and amperage on an article being passed through an electrocoating bath |
| 04/09/1998 | WO1998015046A1 Electronic overcurrent release with a circuit to prepare a measuring signal for phase currents |
| 04/09/1998 | WO1998014788A1 Electrical circuit to detect load current |
| 04/09/1998 | DE3690173C2 Battery tester having layers of liq. crystal and conducting materials |
| 04/09/1998 | DE19641185A1 Schaltungsanordnung zur Stromerfassung in Stromleitern zur Ansteuerung elektronisch steuerbarer Auslöseeinrichtungen Circuit arrangement for current detection in power conductors for controlling electronically controllable release mechanisms |
| 04/08/1998 | EP0834983A2 Device for measuring currents in a converter |
| 04/08/1998 | EP0834116A1 Circuit for comparing two electrical quantities |
| 04/08/1998 | EP0834078A1 High voltage measuring device |
| 04/08/1998 | EP0834057A1 Device for determining the phase component of a conductive medium in a duct |
| 04/07/1998 | US5737730 Measuring process for measuring chargeable electrical consumption from an electrical network and electronic electricity meter |
| 04/07/1998 | US5737231 Metering unit with enhanced DMA transfer |
| 04/07/1998 | US5737082 Method of electro-optical measurement for vector components of electric fields and an apparatus thereof |
| 04/07/1998 | US5736936 Method and apparatus for predicting peak voltage of a cable conveyed tool |
| 04/07/1998 | US5736928 Pre-processor apparatus and method |
| 04/07/1998 | US5736876 For monitoring a positive supply voltage with respect to a ground voltage |
| 04/07/1998 | US5736847 Power meter for determining parameters of muliphase power lines |
| 04/07/1998 | US5736846 AC current sensor |
| 04/07/1998 | US5736737 Device for sensing electrical current flowing through a conductor |
| 04/07/1998 | US5735254 Circuit for detecting an overvoltage on a switched inductive load |
| 04/02/1998 | WO1998013921A1 Circuit arrangement for detection of current in an electric conductor to control electronically controllable tripping devices |
| 04/02/1998 | WO1998013920A1 Circuit for detection of current in an electric conductor to control electronically controllable tripping devices |
| 04/02/1998 | DE19641183A1 Schaltungsanordnung zur Stromerfassung eines Stromleiters zur Ansteuerung elektronisch steuerbarer Auslöseeinrichtungen Circuit arrangement for current detection of a conductor to control electronically controllable release mechanisms |
| 04/02/1998 | DE19638087A1 CMOS-Komparator CMOS comparator |
| 04/02/1998 | DE19637631A1 Anordnung zur Erkennung von Einklemmsituationen bei elektrischen Antrieben Configuration for detecting jamming situations in electric drives |
| 04/01/1998 | EP0833240A2 Loop control detection circuit |
| 04/01/1998 | CN1178008A Comparator for semiconductor testing device |
| 03/31/1998 | US5734094 Ion current detector device for use in an internal combustion engine |
| 03/26/1998 | WO1998012814A1 Cmos comparator |
| 03/26/1998 | WO1998012786A1 Jamming detection device for electrical drives |
| 03/26/1998 | DE19639194A1 Peak detector circuit, for signal processing apparatus |
| 03/25/1998 | EP0831579A1 Trim circuitry and method for accuracy improvement in current sensing |
| 03/25/1998 | EP0830576A1 Open sensor diagnostic system for temperature transmitter in a process control system |
| 03/25/1998 | EP0767917B1 Digital process for determining the effective value of a periodic electric measurement signal |
| 03/25/1998 | CN2277076Y Multipurpose test pencil |
| 03/25/1998 | CN2277075Y Liquid crystal digital a.c. voltage and current meter |
| 03/25/1998 | CN1177228A Circuit for detecting overcharging and overdischarging |
| 03/24/1998 | US5731698 Apparatus for detecting the amplitude and phase of an a.c. signal |
| 03/19/1998 | WO1998011641A2 Digital current differential system |
| 03/19/1998 | WO1998011447A1 Current measurement methods and apparatus employing second harmonic scaling |
| 03/18/1998 | EP0829962A2 Circuit for determining and storing a signal mean value |
| 03/18/1998 | EP0829730A1 A circuit for diagnosing the state of an electric load |
| 03/18/1998 | EP0829125A1 Revenue accuracy meter having power quality measurement and method of measuring power quality |
| 03/18/1998 | EP0829013A1 Fibre optic transducer |
| 03/18/1998 | EP0748535A4 Improved supply voltage detection circuit |
| 03/17/1998 | US5729421 Circuit analyzing system |
| 03/12/1998 | WO1998010301A1 Load-less load current detector and method |
| 03/11/1998 | EP0828352A2 Satellite power level monitoring system and method using digital signal processing |
| 03/05/1998 | WO1998009176A1 A circuit for current measurement and uses thereof |
| 03/05/1998 | DE19634439A1 Fault current measurement with intelligent GST distributor for electrical plant |
| 03/04/1998 | EP0756710B1 Device for displaying the voltage of a conductor of a high-voltage power supply system |
| 03/04/1998 | CN2275718Y Device for monitoring fault of electric energy metering voltage circuit |
| 03/04/1998 | CN1175106A Electronic relay |
| 03/03/1998 | US5723974 Monolithic power converter with a power switch as a current sensing element |
| 02/26/1998 | WO1997043892A3 System and method for estimating a load to optimize a backup energy system response |
| 02/25/1998 | EP0825069A2 Method of determining a measured value |
| 02/25/1998 | EP0824704A2 Circuit for detecting a level or a level variation of an input direct voltage |
| 02/25/1998 | CN2275249Y Comparator for direct current |