| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 08/02/1994 | US5334930 Peak detection circuit |
| 08/02/1994 | CA2032365C Current sensor circuit |
| 07/28/1994 | DE4401593A1 Current detector with iron core |
| 07/27/1994 | EP0607614A2 Sense circuit, memory circuit, negative-resistance circuit, schmitt trigger, load circuit, level shifter, and amplifier |
| 07/27/1994 | CN2172874Y AC voltmeter with digital display |
| 07/27/1994 | CN2172873Y Pulse peak voltmeter |
| 07/26/1994 | US5332962 Peak voltage detector with ferroelectric element |
| 07/26/1994 | US5332931 High speed differential comparator |
| 07/26/1994 | CA2031690C Dispositif de mesure de tension |
| 07/21/1994 | WO1994015816A1 Junction box having integrally formed shunt |
| 07/20/1994 | CN2172481Y Circuit safety test pencil |
| 07/19/1994 | US5331283 Apparatus for detecting a completed electrical circuit at an electrical output receptacle |
| 07/19/1994 | US5331211 Releasing circuit for actuating vehicular safety device |
| 07/19/1994 | US5331210 Differential CMOS peak detection circuit |
| 07/13/1994 | EP0606161A2 Circuit for converting unipolar input to bipolar output |
| 07/13/1994 | CN2171870Y Electronic acoustooptical test pencil |
| 07/13/1994 | CN2171869Y 试电笔 Test pencil |
| 07/12/1994 | US5329440 Device for converting a very-low-amplitude steady voltage signal into an alternating voltage signal |
| 07/12/1994 | US5329187 High speed differential comparator |
| 07/12/1994 | US5329172 Chopping type comparator with clocked inverter |
| 07/12/1994 | US5329171 Zero cross detection circuit |
| 07/06/1994 | EP0604493A1 Method and apparatus for power measuring |
| 07/06/1994 | EP0604444A1 Circuit arrangement to detect a voltage. |
| 07/05/1994 | US5327029 Logarithmic current measurement circuit with improved accuracy and temperature stability and associated method |
| 07/05/1994 | US5327016 Load control circuit including automatic AC/DC discernment |
| 06/29/1994 | EP0604270A1 Power-on reset circuit with protection against power failures for an integrated circuit |
| 06/29/1994 | EP0603540A2 Circuit device for measuring a pulsating DC-current |
| 06/28/1994 | US5325050 Maximum voltage detecting apparatus using ferroelectric capacitors |
| 06/28/1994 | US5324994 Peak detection circuit |
| 06/23/1994 | WO1994014079A1 Charge-status indicator |
| 06/22/1994 | CN2169877Y Multi-way multifunctional instrument for microcomputer |
| 06/22/1994 | CN2169857Y Portable alarm for electrization |
| 06/22/1994 | CN2169856Y Multi-purpose electronic power measuring tool |
| 06/22/1994 | CN2169855Y Multi-state electronic power measuring tool |
| 06/22/1994 | CN2169852Y Detecting instrument |
| 06/22/1994 | CA2108299A1 Flame monitor safeguard system |
| 06/21/1994 | US5323115 Electrostatic voltmeter producing a low voltage output |
| 06/16/1994 | DE4342082A1 Control circuit and level shifting circuit, esp. for power transistor - has control voltage monitor, and generates recovery signal when defined time period has elapsed after generation of voltage drop signal |
| 06/15/1994 | CN1025094C Double-slope integral analogue/digital converter |
| 06/15/1994 | CN1025075C Optical fibre apparatus for measuring current intensity |
| 06/14/1994 | US5321656 CMOS-based peak detector for fast-in, slow-out min/max detection |
| 06/09/1994 | WO1994012940A1 Instrumentation system with multiple sensor modules |
| 06/09/1994 | CA2149632A1 Instrumentation system with multiple sensor modules |
| 06/08/1994 | CN2168258Y Electroscope for electrification railway contact network |
| 06/07/1994 | US5319370 Analog-to-digital converter with a continuously calibrated voltage reference |
| 06/07/1994 | US5319306 Portable electrical line tester using audible tones to indicate voltage |
| 06/07/1994 | US5319265 Comparator with hysteresis |
| 06/01/1994 | EP0599593A2 Full wave rectifier using current mirror bridge |
| 06/01/1994 | EP0599438A2 Process and device for monitoring periodic voltage signals |
| 06/01/1994 | CN2167461Y Low voltage drop sumpling overcurrent measuring device |
| 06/01/1994 | CN2167376Y Digital displaying ac electricity current meter |
| 06/01/1994 | CN2167375Y AC current sensing measuring device |
| 06/01/1994 | CN1087430A Anti-interference high sensitive impact relay |
| 05/31/1994 | US5317256 High-speed, high-impedance external photoconductive-type sampling probe/pulser |
| 05/31/1994 | US5317253 Concealed wire tracing apparatus |
| 05/31/1994 | US5317251 Peak magnetic field detector with non-volatile storage |
| 05/31/1994 | US5317218 Current sense circuit with fast response |
| 05/26/1994 | WO1994011707A1 Circuitry for processing analogical current and voltage signals |
| 05/25/1994 | EP0597873A1 Process for compensating for quasi-periodic disturbances of measurement signals. |
| 05/24/1994 | US5315527 Method and apparatus providing half-cycle digitization of AC signals by an analog-to-digital converter |
| 05/24/1994 | US5315293 Overcurrent detecting method and apparatus |
| 05/24/1994 | US5315168 Peak hold circuit with improved linearity |
| 05/18/1994 | CN2165450Y 试电笔 Test pencil |
| 05/18/1994 | CN2165449Y Intelligent current monitor |
| 05/18/1994 | CN2165448Y Portable optical current forked meter |
| 05/18/1994 | CN1086904A Real-time micro computer electric quantity oscillograph |
| 05/17/1994 | US5313165 Temperature-compensated apparatus for monitoring current having controlled sensitivity to supply voltage |
| 05/17/1994 | US5313115 Comparator |
| 05/11/1994 | WO1994010755A1 Electronic component |
| 05/11/1994 | WO1994010735A1 Method and device for measuring compensation balance and imbalance in an electrical supply network |
| 05/11/1994 | EP0596473A1 Circuit for monitoring the drain current of a MOSFET |
| 05/11/1994 | DE4336725A1 Current measuring circuit using temp. sensors |
| 05/10/1994 | US5311071 High speed threshold crossing detector with reset |
| 05/05/1994 | DE4336884A1 Semiconductor device with predetermined test mode - applies potential at pre-specified internal node to external contact in test mode in response to control signals |
| 05/05/1994 | DE4236644A1 Elektronisches Bauelement Electronic component |
| 05/04/1994 | EP0595677A1 Method and device for measuring match and mismatch of compensation of an electric distribution network |
| 05/04/1994 | EP0595404A2 A current sensing circuit |
| 05/04/1994 | EP0595327A2 Battery detecting device for a radio pager |
| 05/04/1994 | EP0595318A2 Buffer circuit for input signal having amplitude smaller than power voltage |
| 05/04/1994 | CN2164052Y Iron-core coil type pulsating current sensor |
| 05/03/1994 | US5309349 Current detection method for DC to three-phase converters using a single DC sensor |
| 05/03/1994 | CA1329251C Optical fibre measuring device, gyrometer, central navigation and stabilizing system |
| 04/28/1994 | WO1994009444A1 Voltage monitoring methodology |
| 04/27/1994 | EP0594305A1 Comparator circuit |
| 04/27/1994 | EP0593466A1 An indirect current measuring circuit |
| 04/21/1994 | DE4334952A1 Test circuit for signal input stages with thresholds - contains short circuit device with switch for each input stage, e.g. operational amplifier |
| 04/21/1994 | DE4241975C1 Schaltungsanordnung zur Anzeige des Ladezustands einer Batterie Circuitry to manage charging status of a battery |
| 04/20/1994 | CN2162656Y Monitoring pen for vehicle electric circuit |
| 04/19/1994 | US5304939 Tracking peak detector |
| 04/19/1994 | US5304865 Comparator circuit comprising input signal attenuator |
| 04/19/1994 | US5304864 Analog maximum/minimum selector circuit |
| 04/14/1994 | WO1994008380A1 Sensor for registration of leak current |
| 04/14/1994 | WO1994008246A1 Differential current sensing circuit |
| 04/12/1994 | US5302863 CMOS peak amplitude detector |
| 04/12/1994 | CA1328491C Pulse generation and tracking system |
| 04/06/1994 | EP0590936A2 Electrical switching apparatus with digital trip unit and automatic frequency selection |
| 04/06/1994 | EP0590303A2 Integrable zero-point detector |
| 04/06/1994 | CN2161001Y Remote signalling sensing socket |
| 04/05/1994 | US5301121 Measuring electrical parameters of power line operation, using a digital computer |
| 04/05/1994 | US5300917 Junction box having integrally formed shunt |