| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 07/22/1999 | WO1999037006A1 Circuit interrupter having improved current sensing apparatus |
| 07/22/1999 | WO1999036791A2 Peak detection apparatus |
| 07/22/1999 | DE19802188A1 Voltage converter for measurement function in low voltage (LV) power switch |
| 07/21/1999 | EP0930708A2 Analog signal processing circuit, photo detector and image forming apparatus |
| 07/21/1999 | EP0929818A1 Electrical circuit to detect load current |
| 07/21/1999 | CN2329974Y Test pencil core |
| 07/20/1999 | US5926009 Voltage monitoring circuit in an integrated circuit |
| 07/20/1999 | CA2100253C Battery tester |
| 07/14/1999 | EP0928511A1 Circuit arrangement for detection of current in an electric conductor to control electronically controllable tripping devices |
| 07/14/1999 | EP0928510A1 Circuit for detection of current in an electric conductor to control electronically controllable tripping devices |
| 07/14/1999 | CN2329009Y Warning safety helment for electrician |
| 07/14/1999 | CN2329008Y Signal isolation detector for multi-way low voltage indicating lamp |
| 07/14/1999 | CN2329007Y Soft and solid insulation combined super high voltage line electroscope |
| 07/14/1999 | CN1222679A Multimeter with both pointer and digit display |
| 07/13/1999 | US5924052 Method for detecting signals by means of fuzzy-logic classification |
| 07/13/1999 | US5923069 Voltage level detecting circuit |
| 07/13/1999 | US5922964 Amplitude detecting device |
| 07/13/1999 | CA2162654C Method and apparatus for determining and selectively displaying valid measurement information |
| 07/08/1999 | WO1999034223A1 Electronic circuit for monitoring voltage variation |
| 07/07/1999 | EP0547199B1 High speed differential comparator |
| 07/07/1999 | CN2328016Y Voltage tester |
| 07/07/1999 | CN2327216Y Alarm shoes for workers in electric power industry |
| 07/07/1999 | CN1221882A Multi-stage semi-differential a. c oscillographic timing potentiometer |
| 07/06/1999 | US5920191 Current flow monitor for heating cables |
| 07/06/1999 | US5920190 Sampled capacitor electrometer |
| 07/06/1999 | US5920189 Auto ranging current monitor with common mode correction |
| 07/06/1999 | US5920188 Voltage measurement instrument having transient overvoltage input protection |
| 07/06/1999 | US5918982 Temperature detecting using a forward voltage drop across a diode |
| 07/01/1999 | WO1999032891A2 Method for defining instantaneous value of current of pulse-controlled inductive load |
| 07/01/1999 | DE19757573A1 Indicating direction of energy flow in electric AC voltage mains especially medium voltage mains |
| 06/30/1999 | EP0926810A1 Improvement for polyphase vehicle generator controllers |
| 06/30/1999 | EP0926507A2 Method for displaying battery voltage in TDMA radio terminal |
| 06/30/1999 | EP0926338A1 Device for measuring the ionisation current in a combustion chamber |
| 06/29/1999 | US5917346 Low power current to frequency converter circuit for use in implantable sensors |
| 06/29/1999 | US5917319 Methods and apparatus for sensing currents |
| 06/29/1999 | US5915838 Method and apparatus for local temperature sensing for use in performing high resolution in-situ parameter measurements |
| 06/24/1999 | WO1999017122A3 Current comparator |
| 06/24/1999 | DE19855942A1 Event detector for monitoring waveforms of physical phenomena, e.g. heartbeats |
| 06/24/1999 | DE19756043A1 Detecting short circuit in cable network of electrical power supply system |
| 06/23/1999 | CN2325902Y Multi-function electrician pliers |
| 06/23/1999 | CN2325781Y Digital voltmeler meter and galvano-meter |
| 06/22/1999 | CA2002908C Universal output circuit |
| 06/17/1999 | WO1999030534A1 Peak to peak signal detector for audio system |
| 06/17/1999 | WO1999030300A1 System and method for detecting voltage and current imbalance in an electrical energy supply |
| 06/17/1999 | WO1999030173A1 System and method for programmable brown-out detection and differentiation |
| 06/17/1999 | DE19755773A1 Measurement arrangement for time function of large electric current with short rise-time, especially for GTO thyristor |
| 06/16/1999 | EP0922962A1 Procedure and device for sampling a reactance |
| 06/16/1999 | EP0922961A2 Voltage measurement instrument having transient overvoltage input protection |
| 06/16/1999 | EP0875090B1 Connector, in particular a plug-in connector for tt and tn networks |
| 06/16/1999 | EP0721722B1 Method of predicting voltages in telephone line measurement |
| 06/16/1999 | EP0664933B1 Sensor for registration of leak current |
| 06/10/1999 | WO1999028756A1 Method of measuring current while applying a voltage and apparatus therefor |
| 06/10/1999 | WO1999028755A2 Electronic circuits for detecting the earthing system and for testing the efficiency of residual current circuit-breakers connected to phase, neutral and earth of electrical users |
| 06/09/1999 | EP0921400A2 Terminal apparatus for electro-optic probe |
| 06/02/1999 | EP0919822A2 System for verifying signal voltage level accuracy on a digital testing device |
| 06/02/1999 | EP0919790A2 Optical sensor apparatus and signal processing circuit used therein |
| 06/02/1999 | EP0918997A1 Circuit arrangement for capturing the charging current in a power semiconductor element with source-side charge |
| 06/02/1999 | CN2322149Y Digital electric test pencil |
| 06/02/1999 | CN1218322A Battery charging circuit and battery charging device |
| 06/01/1999 | US5909527 Automatic current selection for single fiber splicing |
| 06/01/1999 | US5909143 Circuit for determining and storing an average signal value |
| 06/01/1999 | US5909112 Configuration and test process for semiconductor overcurrent detecting circuit |
| 05/27/1999 | DE19751654A1 Circuit for voltage state detection and indication, e.g. for medium and high voltage switching systems |
| 05/26/1999 | EP0918224A2 Signal processing circuit for electro-optic probe |
| 05/26/1999 | CN2321011Y Electric network earth capacitance current measuring apparatus |
| 05/25/1999 | US5907241 Current measurement methods and apparatus employing second harmonic scaling |
| 05/20/1999 | WO1999025048A1 Waveform reconstruction from distorted (saturated) currents |
| 05/20/1999 | DE19851732A1 Current-regulation stage fault-monitoring system |
| 05/20/1999 | DE19750993A1 Load current measurement method, especially for motor current |
| 05/19/1999 | EP0916956A1 RMS converter for obtaining fast RMS measurements |
| 05/19/1999 | CN2319818Y Step-diode billisecond zero cross discriminator |
| 05/19/1999 | CN2319816Y Intelligent contact acousto-optical a.c high voltage electroscope |
| 05/18/1999 | US5905439 Apparatus and method for monitoring a plurality of parallel loads having a common supply |
| 05/14/1999 | WO1999023497A1 Improvements relating to current indicators |
| 05/14/1999 | CA2309064A1 Improvements relating to current indicators |
| 05/14/1999 | CA2216201A1 A load and supply status indicator |
| 05/12/1999 | EP0915346A2 Current sensing circuit with high input impedance |
| 05/12/1999 | EP0783702B1 Method and device for measuring impedance in alternating current networks and method and device for preventing the formation of separate networks |
| 05/12/1999 | EP0776478B1 Method and device for monitoring power-supply networks |
| 05/12/1999 | CN2318639Y Earth monitor for electrostatic earthed system |
| 05/12/1999 | CN2318638Y AC current converter |
| 05/11/1999 | US5903422 Overcurrent sensing circuit for power MOS field effect transistor |
| 05/10/1999 | CA2247572A1 Rms converter for obtaining fast rms measurements |
| 05/06/1999 | WO1999022249A1 Method and measuring unit for verifying the presence of a neutral conductor connection between a four wire system and a measuring unit |
| 05/06/1999 | WO1999021745A1 Circuit configuration to monitor a regulated output voltage in a motor vehicle |
| 05/06/1999 | EP0913292A2 Method for equalizing the voltage of traction battery modules of a hybrid electric vehicle |
| 05/06/1999 | EP0913288A2 Method for maintaining the charge capacity of traction battery modules of a hybrid electric vehicle |
| 05/06/1999 | EP0741871B1 Method of measuring current in a conductor in an ac transmission network |
| 05/06/1999 | DE19847663A1 Detector |
| 05/06/1999 | DE19846855A1 Test system e.g. for radio telephone systems |
| 05/06/1999 | DE19746349A1 Arrangement for detecting the mean current flowing through a load with an inductive component |
| 05/05/1999 | CN2317482Y Voltage detector |
| 05/04/1999 | US5901114 Circuit for measuring the cut-off time of an electronic system |
| 05/04/1999 | US5901002 Circuit in a controller |
| 05/04/1999 | US5900776 Current sense circuit |
| 05/04/1999 | US5900748 Voltage comparator |
| 05/04/1999 | US5900714 Circuit for sensing motor load current |
| 05/04/1999 | US5899960 Apparatus and method for power disturbance analysis and storage of power quality information |
| 04/29/1999 | WO1999021279A1 Circuit for regulating the current supplied to an electromechanical component in a motor vehicle |
| 04/29/1999 | DE19751429A1 Switching arrangement for PSU voltage monitoring of regulated output voltage in vehicle |