| Patents for G01R 29 - Arrangements for measuring or indicating electric quantities not covered by groups (11,937) |
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| 04/20/1994 | CN1085663A Plasma phase-sequence indicator for three-phase power supply |
| 04/19/1994 | US5305243 Method and device for comparing two variable analogue signals |
| 04/19/1994 | US5304855 Bi-level pulse accumulator |
| 04/19/1994 | CA2009423C Aperture synthesized radiometer using digital beamforming techniques |
| 04/19/1994 | CA2001583C Noise measurement probe |
| 04/14/1994 | DE4234052A1 Measurement of damping of stray radio field measurement position - using known antenna factors and coupling correction factor determined by manufacturer at reference measurement position |
| 04/13/1994 | CN1085320A Power frequency test voltage measurer |
| 04/12/1994 | US5302905 Apparatus and method for detecting and isolating noise-creating imbalances in a paired telecommunications line |
| 04/12/1994 | CA1328491C Pulse generation and tracking system |
| 04/05/1994 | US5300939 Method and apparatus for measuring antenna radiation efficiency |
| 04/05/1994 | US5300885 Field probe for measuring vector components of an electromagnetic field |
| 04/05/1994 | US5300879 Bidimensional electromagnetic emission level monitoring equipment |
| 04/05/1994 | US5300825 Peak signal detecting device |
| 03/31/1994 | DE4328083A1 Microscopic measuring of surface topography and potential distribution - laterally displacing field effect structure relative to scanned surface |
| 03/29/1994 | US5298853 Electrical apparatus for detecting relationships in three phase AC networks |
| 03/29/1994 | CA2106246A1 Electrical test arrangement and apparatus |
| 03/23/1994 | EP0588662A1 CN ratio measuring apparatus |
| 03/23/1994 | EP0588656A2 Digital PLL circuit having signal edge position measurement |
| 03/22/1994 | US5296844 Electrical contact avoidance device |
| 03/22/1994 | US5296842 Thunder alarm |
| 03/15/1994 | US5295072 Sampled data lightning strike detection and mapping system capable of recovering a pre threshold sample history for detection and mapping processing |
| 03/15/1994 | US5294934 Phase measuring circuit of phased array antenna |
| 03/10/1994 | DE4330438A1 Surface acoustic wave device connected to electric circuit - has interdigital transducer pattern on SAW substrate having set ratio of conductance of electric load or supply to radiation conductance of reed electrodes |
| 03/10/1994 | DE4229539A1 Duty ratio measurement circuit for IC engine signal having different phases - has first counter for repetitively counting through range and second counter for counting number of cycled ranges, and counts out end value of second counter when phase of signal changes to obtain final result |
| 03/09/1994 | EP0533785B1 Device for measuring, at a plurality of points on a surface, a microwave field radiated by a source |
| 03/08/1994 | US5293520 Jitter analyzer |
| 03/03/1994 | WO1994004934A1 Method for measuring frequency modulation rate characteristics for a swept frequency signal |
| 03/03/1994 | WO1994004933A1 Method and apparatus for improved correlation of electromagnetic emission test data |
| 03/03/1994 | DE4304290C1 EM wave, esp. light, transition time measuring appts. - transmits light pulses over measurement path to receiver, has pulse generator and light modulator in feedback path. |
| 03/02/1994 | EP0584635A1 Device for obtaining the aperture configuration of a phased array antenna |
| 03/02/1994 | CN1083222A Asynchronous current energy meter |
| 03/01/1994 | US5291200 Method for measuring frequency modulation rate characteristics for a swept frequency signal |
| 03/01/1994 | US5291141 Method for continuously measuring delay margins in digital systems |
| 02/23/1994 | EP0584011A1 Electromagnetic wave absorber and wave absorption structure |
| 02/16/1994 | EP0583027A1 Circuit for determining the field strength of FM transmitters |
| 02/08/1994 | US5285164 Electromagnetic radiation measurement apparatus |
| 02/08/1994 | CA1326880C Apparatus for detecting distribution of electric surface potential |
| 02/02/1994 | EP0580913A1 System for indicating fault condition on operator's electrostatic discharge protection equipment |
| 01/27/1994 | DE4224698A1 Measuring and monitored neutralising of surface charges on objects, e.g. paper or plastic foil - using charge neutralising brush whose position is varied according to measured charge |
| 01/26/1994 | CN2154488Y Flashlight three-phase same-time lamp |
| 01/20/1994 | WO1994001790A1 Detection of an electric or ionic perturbation |
| 01/19/1994 | EP0513077B1 Integrated optics pockels cell voltage sensor |
| 01/19/1994 | EP0276280B1 Method for remotely detecting an electric field |
| 01/19/1994 | EP0274529B1 Liquid crystal display |
| 01/12/1994 | CN2153066Y Sensor for detecting synchronous signal |
| 01/12/1994 | CN1023514C Method of each line-frequency signal-watched by oscillograph |
| 01/11/1994 | US5278571 RF coupler for measuring RF parameters in the near-field |
| 01/11/1994 | US5278499 Fiberoptic apparatus for measuring electromagnetic field intensity with an electro-optic sensor |
| 01/06/1994 | WO1994000770A1 Method and device for indicating the direction of rotation of a three-phase system |
| 01/06/1994 | CA2138276A1 Method and device for indicating the direction of rotation of a three-phase system |
| 12/29/1993 | EP0576264A1 Full aperture image synthesis using rotating strip aperture image measurements |
| 12/29/1993 | EP0358756B1 Phase noise measurement system |
| 12/29/1993 | CN1080057A Electric arc detecting device |
| 12/29/1993 | CN1023347C Measuring system for transient charges |
| 12/28/1993 | US5274548 Method for the automatic analysis of signals by means of segmentation and classification |
| 12/21/1993 | US5272433 Polarmetric electric field sensor with electro-optical crystal cut disposed to measure electric field direction |
| 12/16/1993 | DE4219378A1 Spatial high resolution detection appts. for biomedical surface potential distribution e.g. ECG,EEG and EMG - activates metal coated foil electrode by application of point energy beam. |
| 12/15/1993 | CN2149632Y Safety cap for indicating the presence of electricity with language alarm |
| 12/15/1993 | CN1079600A Sine measuring method of electric railway radio interference propagation property |
| 12/14/1993 | US5270723 Near field antenna measurement systems and methods |
| 12/14/1993 | US5270660 Electrostatic voltmeter employing high voltage integrated circuit devices |
| 12/14/1993 | US5270637 Impulse direction detector for ac power systems |
| 12/07/1993 | US5268950 System and method for maintaining uniform spacing of an electrode over the surface of an x-ray plate |
| 12/07/1993 | US5268689 Multi-band microwave detector |
| 12/01/1993 | CN2148335Y High/low speed transient waveform acquisition analyser |
| 11/30/1993 | US5267336 Electro-optical sensor for detecting electric fields |
| 11/30/1993 | US5266959 Intra-array test probe |
| 11/30/1993 | US5266953 Adaptive fixed-threshold pulse time-of-arrival detection apparatus for precision distance measuring equipment applications |
| 11/30/1993 | US5266892 Method of measuring interface state density distribution in MIS structure |
| 11/30/1993 | US5266888 Wide power range radiation monitor |
| 11/23/1993 | US5265151 Method of improving modem performance by controlling transmitted power of modem, and modem implementing the same |
| 11/23/1993 | US5265124 Integrated multi-port repeater having shared resources |
| 11/23/1993 | US5263368 Hand-held lightning detection and ranging device |
| 11/18/1993 | EP0570148A2 Electrostatic voltmeter employing high voltage integrated circuit devices |
| 11/18/1993 | EP0528976A4 Pin hole detector |
| 11/09/1993 | US5260796 Apparatus detecting distribution of surface potential on a medium holding charge latent image |
| 11/09/1993 | US5260670 Equivalent time sampler using an oscillator |
| 11/09/1993 | US5260513 Method for absorbing radiation |
| 11/04/1993 | DE4214585A1 Manipulator for three=dimensional positioning of test objects for EMV measurements - positions test object by rotation of diagonal of imaginary cube by single drive coupled to frame for receiving object. |
| 11/03/1993 | EP0567801A2 Universal phase match path generator for three-phase power |
| 11/03/1993 | CN2145388Y Anti-steal electric remote detector |
| 11/02/1993 | CA1323911C Reflection-free termination of a tem-waveguide |
| 10/27/1993 | CN1077800A Time constant detecting circuit and time constant adjusting circuit |
| 10/26/1993 | US5256974 Method and apparatus for a floating reference electric field sensor |
| 10/26/1993 | CA1323503C Device and method to measure a short radiation pulse or an electric pulse |
| 10/14/1993 | WO1993020455A1 Method and means for determining directional characteristics of large sensor or radiator arrays |
| 10/13/1993 | EP0565464A1 Method for damping electromagnetic waves, especially in a Faraday cage |
| 10/13/1993 | EP0565224A2 Non-intrusive speech level and dynamic noise measurements |
| 10/13/1993 | EP0355114B1 Device for measuring, at a plurality of points, the microwave field diffracted by an object |
| 10/12/1993 | US5253188 Built-in system for antenna calibration, performance monitoring and fault isolation of phased array antenna using signal injections and RF switches |
| 10/12/1993 | US5252912 System for warning aircraft pilot of potential impact with a power line and generating time-to-time impact signal |
| 10/12/1993 | US5252497 Method of characterizing optical parameters of opto-electronic components and apparatus for carrying out the method, particularly during a coating operation |
| 10/05/1993 | US5250907 Digital signal measurement apparatus |
| 09/29/1993 | EP0562989A1 Procedure and apparatus for measuring phase noise of sinusoidal signal generators |
| 09/29/1993 | EP0562407A1 Method and apparatus for noise measurement |
| 09/29/1993 | EP0562028A1 Apparatus and method for measuring lateral charge distribution on a moving web |
| 09/28/1993 | US5247933 Photonic ionic cloth radio amplifier |
| 09/21/1993 | US5247260 Methods and apparatuses for determining the distribution of electric charge in electrical insulators produced by a sudden deformation in the insulators |
| 09/16/1993 | WO1993018558A1 Electromagnetic interference testing apparatus |
| 09/15/1993 | EP0560513A2 Single balanced beam electrostatic voltmeter modulator |