Patents
Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286)
01/1996
01/09/1996US5483172 Radio frequency measuring apparatus
01/09/1996US5483169 RF imaging of low observable coatings using a wire-over-ground-plane transmission line
01/03/1996EP0690492A2 Contactless sheet resistance measurement method and apparatus
01/03/1996EP0690396A1 Apparatus and method for analyzing circuits
01/03/1996EP0690310A2 Electromagnetic inductive probe
01/03/1996EP0689677A1 Apparatus and methods for measuring and detecting variations in the value of a capacitor
01/02/1996US5481200 Field transmitter built-in test equipment
01/02/1996US5481198 Method and device for measuring corrosion on a portion of a metallic path carrying an undetermined load current
01/02/1996US5481187 Method and apparatus for determining the position of an armature in an electromagnetic actuator
12/1995
12/26/1995US5479610 System interface fault isolator test set
12/20/1995EP0687907A1 Micro Eddy current sensor
12/19/1995US5477162 Method for determining the short-circuit inductance of an asynchronous machine
12/14/1995CA2139265A1 Micro eddy current sensor
12/13/1995EP0686852A2 LAN cable identifier for testing local area network cables
12/13/1995EP0603340B1 Method and apparatus for testing coins
12/05/1995US5473254 Test probe assembly provides precise and repeatable contact forces
12/05/1995CA2043394C Amperimetric measurement with cell electrode deplating
11/1995
11/30/1995WO1995032434A1 Process for determining, in tt systems, the ground resistances in the feed system and in the user's installation
11/30/1995DE4418134A1 Capacitance measurement circuit esp. for tank level sensor of e.g. motor vehicle
11/29/1995EP0684482A2 Swept signal analysis instrument and method
11/29/1995EP0550699B1 Method and apparatus for testing a dual airbag passive restraint system
11/28/1995US5471147 Apparatus and method for determining the linear position of a hydraulic cylinder
11/22/1995CN2213400Y Interference-free power supply phase shifter
11/21/1995US5469364 Apparatus and methods for measuring and detecting variations in the value of a capacitor
11/21/1995US5469071 Resistor sensor input apparatus
11/21/1995US5469070 Circuit for measuring source resistance of a sensor
11/21/1995US5469069 Method and apparatus for measuring resistivity of geometrically undefined materials
11/21/1995US5469066 Method and apparatus for measuring deterioration of power cable insulation
11/15/1995EP0682246A1 Sensor for measuring the conductivity of liquids
11/15/1995EP0681686A1 Capacitance-resistance position sensor
11/15/1995EP0640219B1 Integratable conductivity measuring device
11/15/1995CN1030267C Anti electric field interference measuring method and device for medium loss angle and electric capacity
11/14/1995US5467021 Calibration method and apparatus
11/14/1995US5466976 Time constant detecting circuit and time constant adjusting circuit
11/08/1995EP0681187A2 Instrument and method for testing local area network cables
11/08/1995CN1111355A 电容测量装置 Capacitance measuring apparatus
11/07/1995US5465287 In a telephone system
11/02/1995WO1995029408A1 System for the remote measuring of the protection ground
11/02/1995EP0679898A2 Insulation state measurement method for decentralized power generating system
11/02/1995EP0679863A1 Device for measuring the position of a conductor of a cable within a cable covering
10/1995
10/31/1995US5463323 For measuring current and voltage at a device under test
10/31/1995US5463317 Shield integrity monitor
10/25/1995EP0628170B1 Process for detecting non-linear behaviour in a digital data transmission path to be examined
10/24/1995US5461358 Resistance measurement circuit for external deployment path of sir system
10/24/1995US5461324 Split-fixture configuration and method for testing circuit traces on a flexible substrate
10/24/1995US5461321 Apparatus and method for measuring capacitance from the duration of a charge-discharge charge cycle
10/12/1995WO1995027189A1 Resistance measuring circuit, and thermal appliance, electrical thermometer and cold-generating appliance including such a measuring circuit
10/11/1995CN1109976A Synchronous tracking measuring method for tolerance variable condenser
10/10/1995US5457402 Armature resistance measuring apparatus and method
10/10/1995US5457087 High temperature superconducting dielectric resonator having mode absorbing means
10/04/1995EP0675607A2 Cable crosstalk measurement system
10/04/1995EP0675347A1 Circuit for measuring a physical quantity
10/03/1995US5455516 Meter and method for in situ measurement of the electromagnetic properties of various process materials using cutoff frequency characterization and analysis
10/03/1995US5455513 System for measuring properties of materials
09/1995
09/28/1995WO1995025963A1 System for calibrating a line isolation monitor
09/28/1995WO1995025962A1 Monitor for an ungrounded system
09/28/1995WO1995025961A1 System for measuring line to ground impedance
09/26/1995US5453689 Magnetometer having periodic winding structure and material property estimator
09/26/1995US5453682 Meter for measuring a voltage
09/21/1995WO1995025385A1 Capacitance-sensitive switch and switch array
09/21/1995CA2185420A1 Capacitance-sensitive switch and switch array
09/20/1995CN2208235Y High electric resistance measuring meter
09/19/1995US5451940 Capacitive sensor signal processing arrangement using switch capacitor structures
09/19/1995US5451884 Electronic component temperature test system with flat ring revolving carriage
09/19/1995US5451882 Method of measuring dielectric constant of powder
09/19/1995US5451866 Quick-mount measuring device for evaluating the electrical characteristics of ferroelectric materials
09/13/1995EP0477228B1 Object detection and analysis with transmission lines
09/13/1995EP0450053B1 Three-toroid electrodeless conductivity cell
09/13/1995CN2207586Y Intelligent quick detecting microohmmeter
09/13/1995CN2207585Y Solid specimen electrical character measuring device
09/12/1995US5450328 System for measuring line to ground impedance
09/12/1995US5450015 Apparatus for measuring impedance to determine a property of a material
09/08/1995WO1995023979A1 A resistance network
09/06/1995CN2206966Y Power cable anti-theft siren of three-phase electrical machinery
09/05/1995US5448491 Monitor for an ungrounded system
09/05/1995US5448178 Transient technique to determine solution resistance for simple and accurate corrosion rate measurements
09/05/1995US5447745 Method of sealing
08/1995
08/30/1995EP0256087B1 Plated sensor for monitoring corrosion or electroplating
08/29/1995US5446682 System for calibrating a line isolation monitor
08/29/1995US5446444 Capacitive threshold detector test circuit
08/25/1995CA2143272A1 Apparatus for measuring impedance to determine a property of a material
08/23/1995EP0641433A4 Apparatus for non-destructive testing of dielectric/magnetic materials.
08/23/1995CN2205971Y Fast inductance load microohm-meter using dc cell
08/22/1995US5444759 Method of predicting voltages in telephone line measurement
08/22/1995US5444597 Wafer release method and apparatus
08/22/1995US5444381 Measuring circuit for impedance values particularly for use with inductive displacement transmitters
08/22/1995US5444379 Electric conductivity measuring cell
08/16/1995EP0667534A1 Method for measuring a resistance value
08/16/1995CN1106925A Resistance-measurement based arrangement for monitoring integrity of travel path ground link in electronic components handling apparatus
08/15/1995US5442515 Method and apparatus for controlling the current through a magnetic coil
08/15/1995US5442297 Contactless sheet resistance measurement method and apparatus
08/09/1995EP0665952A1 Device and method for identifying and quantifying layered substances
08/08/1995US5440528 Dual time base zero dead zone time domain reflectometer
08/08/1995US5440380 Imaging forming apparatus having transfer material carrying member for carrying transfer materials
08/08/1995US5440251 Phase differential measurement circuit
08/08/1995US5440238 Surface property detection apparatus and method
08/08/1995US5440236 Calibrating a network analyzer by making multiple measurements on a common transmission line with a movable discontinuity
08/03/1995WO1995020760A1 Apparatus for measuring the surface resistance and electric resistivity of a homogeneous resistive material at high temperature
08/02/1995EP0665625A2 Method for obtaining an impedance value and for processing in a distance protection device
08/02/1995EP0664888A1 Circuit for measuring source resistance of a sensor