Patents
Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286)
03/2002
03/19/2002US6359449 Single coil conductance measuring apparatus
03/14/2002US20020030550 Tuning method for filters having multiple coupled resonators
03/14/2002US20020030504 Method for measuring surface leakage current of sample
03/12/2002US6356852 Multi-port programmable tester
03/12/2002US6356514 Built-in self test method for measuring clock to out delays
03/12/2002US6356163 Tuning method for filters having multiple coupled resonators
03/12/2002US6356085 Method and apparatus for converting capacitance to voltage
03/07/2002WO2002018957A2 A device to audibly express impedance differences
03/07/2002US20020027191 Apparatus for sensing position of electrostatic XY-stage through time-division multiplexing
03/07/2002DE10115732A1 Determination of network transmission and reflection characteristics or scatter coefficients using a vector network analyzer in which reciprocal values for a multi-gate network are inferred rather than measured directly
03/07/2002CA2420628A1 A device to audibly express impedance measurement
03/06/2002EP1184671A1 Power detector using FET transistor
03/06/2002EP1183530A2 An automated stationary/portable test system for dielectrics
03/06/2002EP1101122B1 Quasi-hemispherical fabry-perot resonator and method for operating the same
03/06/2002EP0990164B1 Method and device for monitoring a cable
03/06/2002CN1339114A Multi-port device analysis apparatus and method and calibration method thereof
03/05/2002US6353337 Load capacitance measuring circuit and output buffer adaptive to wide range of load capacitance
03/05/2002US6353327 Circuit board misalignment detection apparatus and method
03/05/2002US6351884 Process for manufacturing printed circuit boards and process for connecting wires thereto
02/2002
02/28/2002WO2001079868A3 System for measuring signal path resistance for an integrated circuit tester interconnect structure
02/28/2002US20020024357 Power detector using FET transistor
02/28/2002US20020024349 Sample assembly for thermoelectric analyzer
02/28/2002US20020024346 Method of inspecting piezoelectric ceramic device
02/28/2002US20020024345 Sensor for the capacitive measurement of film with thickness
02/28/2002DE10034060A1 Internal resistance measurement circuit for linear lambda sensor, employs principle of synchronous demodulation
02/27/2002EP1182423A1 Sensor for measuring capacitively the tickness of sheets
02/27/2002EP1181562A2 Scattering parameter calibration system and method
02/26/2002US6349670 Plasma treatment equipment
02/24/2002CA2355459A1 Sensor for the capacitive measurement of film with thicknesses
02/24/2002CA2353429A1 Power detector using fet transistor
02/21/2002WO2002014882A1 Method and device for measuring a line attenuation
02/21/2002WO2001081937A3 Electronic circuit device with a short circuit switch and method of testing such a device
02/21/2002CA2419079A1 Method and device for measuring a line attenuation
02/20/2002EP0995083B1 Capacitative level detector with optimized electrode geometry
02/20/2002EP0944817B1 Method and apparatus for electronic compensation of erroneous readings caused by resonance in a capacitive pressure transducer
02/19/2002US6348809 Microscopic capacitance measurement system and probing system
02/19/2002US6348804 Vector network analyzer
02/14/2002DE10037432A1 Monitoring of a capacitor bushing to detect faults, by comparison of the quotient of electrical measurements with a characterizing value, with any deviation indicating a fault, the invention being independent of operating voltage
02/12/2002US6347382 Multi-port device analysis apparatus and method
02/12/2002US6346807 Digital eddy current proximity system: apparatus and method
02/07/2002WO2002010781A1 Electrical resistance monitoring device
02/06/2002EP1178302A2 Capacitance type moisture sensor and method of producing the same
02/05/2002CA2102513C Method and apparatus for transmitting electromagnetic signals into the earth from a capacitor
01/2002
01/31/2002US20020012213 Digital distance relay
01/31/2002US20020011861 Circuit board misalignment detection apparatus and method
01/31/2002US20020011857 Test coupon in printed wiring board
01/30/2002EP1175629A1 A method and apparatus for determining the resistivity of a formation through which a cased well passes
01/30/2002EP0998677B1 System for measuring the alternating current
01/30/2002CN1078710C Process for producing signals identifying faulty loops in polyphase electrical power supply
01/29/2002US6343140 Method and apparatus for shooting using biometric recognition
01/24/2002WO2002007419A2 Tdr lan cables attenuation measurement
01/24/2002WO2002006842A2 Circuit for determining the internal resistance of a linear lambda probe
01/24/2002US20020008543 Load capacitance measuring circuit and output buffer adaptive to wide range of load capacitance
01/23/2002EP1174871A1 Apparatus for electrostatically sensing the position of an xy-stage through time-division multiplexing
01/16/2002EP1172647A1 Apparatus for measuring conductivity
01/16/2002EP1171247A1 Four electrical contact testing machine for miniature inductors and process of using
01/10/2002DE10030602A1 Verfahren und Vorrichtung zur Bestimmung des Feuchtegehalts in Mehrkomponentengemischen Method and apparatus for determining the moisture content in multicomponent mixtures
01/10/2002DE10030389A1 Circuit arrangement for constant monitoring of the capacitance of a vehicle airbag ignition capacitor to ensure that it remains above a threshold capacitance required to trigger the airbag primer fuse
01/09/2002EP1169651A1 Method for determining the permeability of a magnetic material by coaxial line perturbation
01/09/2002CN2470835Y Capacitor and impedance apparatus relevant to decimal value and multiple values
01/09/2002CN1330439A Digital Distance relay
01/09/2002CN1330268A Capacity type humidity sensor and producing method thereof
01/08/2002US6337602 Method and apparatus for active isolation in inductive loop detectors
01/03/2002US20020000825 Method for screening multi-layer ceramic electronic component
01/03/2002US20020000813 Capacitance type moisture sensor and method of producing the same
01/03/2002DE10027507C1 Schaltungsanordnung zur Erfassung von Kapazitätsänderungen Circuit arrangement for detecting changes in capacitance
01/02/2002EP1168558A2 Digital distance relay
01/02/2002EP1166275A1 Device for weighting the cell resistances in a magnetoresistive memory
01/02/2002EP1166135A1 Circuit arrangement for measuring the resistances of a pressure-sensitive resistance mat
01/02/2002CN1329255A Chargeable cell test loop contact resistance monitoring method
01/01/2002US6335642 Impedance-to-voltage converter
12/2001
12/27/2001WO2001069272A3 Device and method for monitoring a capacitor bushing
12/27/2001US20010054904 Monitoring resistor element and measuring method of relative preciseness of resistor elements
12/27/2001US20010054894 Apparatus and method for obtaining increased sensitivity, selectivity and dynamic range in property measurement using magnetometers
12/25/2001US6333680 Method and system for characterizing coupling capacitance between integrated circuit interconnects
12/20/2001WO2001096886A1 Method and device for inspecting the mechanical fastening of a component to a base body
12/20/2001US20010052777 Diagnostic circuit for measuring the resistance and the leakage current of at least one firing cap of a motor vehicle occupant protection system, and a motor vehicle occupant protection system including the diagnostic circuit
12/20/2001DE10107441A1 Determining characteristics of frequency translation devices by extracting expressions from reflection responses including variations in sum and difference signal components
12/19/2001EP1164380A2 Circuit for detecting changes in capacitance
12/19/2001EP0963250B1 Improvements in thermal cycler for pcr
12/18/2001US6331780 Static capacitance-to-voltage converter and converting method
12/13/2001US20010050648 Apparatus and method for determining return loss of an electrical device
12/13/2001US20010050565 Multi-point probe
12/13/2001US20010050563 Structure of a memory cell
12/12/2001EP1162470A1 Insulation controller testing apparater for electrical networks
12/12/2001CN1326544A Capacitive measuring device
12/11/2001US6329824 Method of measuring resonant frequency of a resonator and coupling degree of two resonators
12/11/2001US6329805 Method for network analyzation and apparatus
12/05/2001EP1159715A2 Proximity sensor
12/05/2001EP0792113B1 Hair-care appliance with hair-moistness measurement by measuring the resistance of the hair
12/05/2001CN2463839Y Charged intelligent detector for high tension transmission line insulator
12/05/2001CN1325551A Method and apparatus for measuring complex impedance of cells and batteries
12/04/2001US6327545 Method and apparatus for board model correction
12/04/2001US6326929 Method and device for the measurement of antenna impedance
12/04/2001US6326795 Capacitance detection system and method
11/2001
11/29/2001WO2001090765A1 A circuit for measuring absolute spread in capacitors implemented in planary technology
11/29/2001WO2001090764A1 Method and apparatus for in-circuit impedance measurement
11/29/2001WO2000068758A3 An automated stationary/portable test system for dielectrics
11/29/2001WO2000046605A3 Scattering parameter calibration system and method
11/29/2001US20010045840 Electronic circuit device with a short circuit switch and method of testing such a device