| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 10/22/1997 | CN2265542Y 电子试电笔 Electronic test pencil |
| 10/22/1997 | CN1162996A Method for detecting a signal |
| 10/21/1997 | US5680052 Fault indicator tester with test bar and test chamber |
| 10/21/1997 | US5679973 Lateral hall element |
| 10/14/1997 | US5677643 Potential detecting circuit which suppresses the adverse effects and eliminates dependency of detected potential on power supply potential |
| 10/14/1997 | US5677635 Voltage and displacement measuring apparatus and probe |
| 10/14/1997 | US5677623 Fault powered fault indicator having timed reset |
| 10/07/1997 | US5675754 For an ac load control device |
| 10/07/1997 | US5675498 Measuring amplitude of sparsely sampled sinusoidal signal |
| 10/07/1997 | US5675272 Power level sensing for mixed voltage chip design |
| 10/07/1997 | US5675246 Current flow indicator |
| 10/02/1997 | WO1997036181A1 Power supply voltage detecting circuit |
| 10/01/1997 | EP0798565A2 High voltage level detection circuit |
| 10/01/1997 | EP0797802A2 Digital trimming of on-chip analog components |
| 10/01/1997 | EP0797794A1 A voltage reference arrangement, a voltameter, a battery voltage detection arrangement, and a wireless communication device |
| 10/01/1997 | CN2263793Y Safety current indicator |
| 10/01/1997 | CN2263792Y 尿床检测仪 Bedwetting detector |
| 10/01/1997 | CN1161084A Process for determining the state of charge of an accumulator |
| 09/30/1997 | US5672964 Voltage probe testing device |
| 09/24/1997 | CN2263351Y Capacity step down type AC automatic scintillation indicating lamp |
| 09/24/1997 | CN2263350Y Passive high voltage charged on-line flashing display device |
| 09/24/1997 | CN1160208A Continuous scan recording method capable of monitoring plurality of batteries simultaneously |
| 09/23/1997 | US5671147 AC mains test system for measuring current harmonics and voltage variations |
| 09/23/1997 | US5671112 Digital integrator V/Hz relay for generator and transformer over-excitation protection |
| 09/23/1997 | US5670871 Polymeric film electrooptic sensor device |
| 09/23/1997 | US5670867 Current sensing circuit |
| 09/23/1997 | CA2069858C Circuit for measuring battery current |
| 09/18/1997 | WO1997034156A1 Apparatus for measuring parameters of an electronic device |
| 09/18/1997 | DE19651829A1 Voltage testing system for testing high voltage system parts above 1000 volt |
| 09/18/1997 | DE19610448A1 System for optical indicating of operating position of power supply network |
| 09/17/1997 | EP0705438B1 Measurement amplifier |
| 09/16/1997 | US5668487 Circuit detecting electric potential of semiconductor substrate by compensating fluctuation in threshold voltage of transistor |
| 09/16/1997 | US5668465 Battery voltage monitor and disconnection circuit |
| 09/11/1997 | DE19609324A1 Voltage measurement method using analogue=digital converter connected to voltage supply |
| 09/11/1997 | DE19609224A1 Comparator circuit comparing signal voltage with reference voltage |
| 09/09/1997 | US5666077 Method and apparatus for detecting an operating voltage level in an integrated circuit |
| 09/09/1997 | US5666075 Electronic circuit comprising a comparator |
| 09/09/1997 | US5666066 Overcurrent detecting device for a DC motor |
| 09/09/1997 | US5666048 For electrophoretic separation of one or more samples |
| 09/04/1997 | WO1997032218A2 Circuit for detecting a level or a level variation of an input direct voltage |
| 09/04/1997 | WO1997012310A3 Digital trimming of on-chip analog components |
| 09/03/1997 | EP0793108A2 Apparatus for harmonic analysis of waveforms in an AC electrical system |
| 09/03/1997 | EP0793107A2 Apparatus for triggering alarms and waveform capture in an electric power system |
| 09/03/1997 | EP0793105A2 Input detector |
| 09/03/1997 | EP0793104A2 Electrical system monitoring apparatus with programmable custom display |
| 09/03/1997 | CN2261628Y Protection indicator for electric appliances of vehicles |
| 09/02/1997 | US5663711 Power failure alarm |
| 08/28/1997 | CA2198660A1 Apparatus for triggering alarms and waveform capture in an electronic power system |
| 08/27/1997 | CN1158172A A voltage preference apparatus, a voltameter, a battery voltage detection apparatus, and a wireless communication device |
| 08/26/1997 | US5661658 Electrical system monitoring apparatus with programmable custom display |
| 08/26/1997 | US5661626 Excess current detection and control circuit for power source in semiconductor test system |
| 08/26/1997 | US5661410 Method and apparatus for the detection of the current distribution in a conductor of an electric machine |
| 08/26/1997 | US5661396 Method for detecting digital carrier signals on twisted pair transmission lines |
| 08/26/1997 | CA2063524C Optical sensor and method for producing the same |
| 08/21/1997 | DE19613736C1 Generation of signal proportional to RMS value of periodic signal |
| 08/20/1997 | EP0789840A1 Current/voltage transformer for the detection of the electron current in a scanning tunnelling-electron microscope |
| 08/20/1997 | CN2260332Y Multi-function test pencil |
| 08/20/1997 | CN1157656A Process and device for measuring alternating electric current with temperature compensation |
| 08/19/1997 | US5659242 Apparatus for comparing two waveforms in real time |
| 08/19/1997 | US5658682 Process for detecting remaining capacity of battery |
| 08/13/1997 | EP0789246A1 Current measuring circuit |
| 08/13/1997 | EP0536258B1 Faulted circuit detector having isolated indicator |
| 08/13/1997 | CN2259631Y Electronic induction test pen |
| 08/13/1997 | CN1156825A Two-dimensional sensor using LAPS for measuring cell activity |
| 08/12/1997 | US5656934 Optical method of measuring an alternating electrical current, including temperature compensation, and a device for carrying out the method |
| 08/12/1997 | US5656931 Fault current sensor device with radio transceiver |
| 08/07/1997 | WO1997028453A1 Method of detecting an abrupt variation in an electrical alternating quantity |
| 08/07/1997 | DE19605023A1 Verfahren zum Erfassen einer sprunghaften Änderung einer elektrischen Wechselgröße A method for detecting an abrupt change in an electrical change size |
| 08/06/1997 | EP0788231A1 High voltages detector circuit and integrated circuit using the same |
| 08/06/1997 | EP0788229A2 Peak detecting apparatus |
| 08/06/1997 | EP0788210A1 Electronic relay |
| 08/06/1997 | EP0788122A2 Method and apparatus for measuring an ac current which saturates the core of a current transformer |
| 08/06/1997 | EP0788082A2 Fire alarm system with smoke particle discrimination |
| 08/06/1997 | EP0787997A2 Adaptive digital filter for improved measurement accuracy in an electronic instrument |
| 08/06/1997 | EP0787993A1 Voltage detecting circuit, a power on/off resetting circuit, and a semiconductor device |
| 08/06/1997 | EP0787306A1 Process for determining the state of charge of an accumulator |
| 08/06/1997 | EP0787304A1 Numerical comparator |
| 08/06/1997 | CN2258993Y Electricity test film |
| 08/06/1997 | CN2258992Y Multiphase installation type rectification ac voltage meter |
| 08/05/1997 | US5654630 Contactless sensor driven by single power supply |
| 08/05/1997 | US5654579 Electronic component |
| 08/01/1997 | CA2192588A1 Apparatus and method for measuring an ac current which saturates the core of a current transformer |
| 07/31/1997 | WO1997027493A1 Comparator for semiconductor testing device |
| 07/31/1997 | WO1997022183A3 A logarithmic level detector and a radio receiver |
| 07/30/1997 | EP0786810A1 Substrate potential detecting circuit |
| 07/30/1997 | EP0786093A1 Method for detecting a signal |
| 07/30/1997 | CN2258620Y High voltage leakage detector |
| 07/30/1997 | CN1155763A Charging of bootstrap capacitance through LDMOS |
| 07/29/1997 | US5652540 Current sensing circuit having at least one sense cell |
| 07/29/1997 | US5652507 Apparatus and method for measuring an AC current which saturates the core of a current transformer |
| 07/24/1997 | WO1997026698A1 Connector, in particular a plug-in connector for tt and tn networks |
| 07/24/1997 | WO1997026547A1 Optical measuring method and device for measuring a magnetic alternating field with an expanded measuring range and good linearity |
| 07/24/1997 | DE19601884A1 Verbindungseinrichtung, insbesondere Steckvorrichtung für TT- und TN-Netze Connecting means, in particular plug-in device for TT and TN systems |
| 07/24/1997 | CA2243865A1 Connecting device in particular a plug-in device for tt and tn systems |
| 07/24/1997 | CA2243211A1 Optical measuring method and device for measuring a magnetic alternating field with an expanded measuring range and good linearity |
| 07/23/1997 | EP0785440A2 Signal generating circuit and peak detection circuit |
| 07/23/1997 | CN2258278Y Contactless DC current tester |
| 07/22/1997 | US5650936 Power monitor apparatus and method with object oriented structure |
| 07/22/1997 | US5650771 Electrical socket with monitoring unit for monitoring operating conditions |
| 07/22/1997 | US5650715 Method and apparatus for sensing current in power supplies |