| Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286) |
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| 10/20/1988 | WO1988008211A1 Broad band coupler |
| 10/20/1988 | DE3710835A1 LC oscillator |
| 10/19/1988 | CN88203018U Avo meter for vehicles |
| 10/12/1988 | CN87216984U Online measuring apparatus for computer capacitors |
| 10/11/1988 | US4777430 Circuit for determining the effective series resistance and Q-factor of capacitors |
| 10/11/1988 | US4777429 Test arrangement |
| 10/11/1988 | US4777336 Method for treating a material using radiofrequency waves |
| 10/05/1988 | EP0285320A1 Apparatus and method for determining the values of circuit elements in a three terminal equivalent circuit |
| 10/05/1988 | EP0285070A1 Capacitance measuring circuit |
| 10/04/1988 | US4775831 In-line determination of presence of liquid phase moisture in sealed IC packages |
| 10/04/1988 | US4775830 Method of and arrangement for measuring low capacitances |
| 09/28/1988 | EP0284546A1 Method of testing assemblies |
| 09/22/1988 | DE3707862A1 Arrangement for measuring the transition resistance of line terminals in a network of conductors which are connected electrically in parallel |
| 09/20/1988 | US4772844 High precision capacitance bridge |
| 09/15/1988 | DE3706932A1 Device for protecting against shorts to earth for rectifier-fed synchronous machine exciter device in a potential free arrangement |
| 09/14/1988 | EP0281610A1 Capacitor array sensors tactile and proximity sensing and methods of use thereof |
| 09/13/1988 | US4771246 Method for determining the location of a leak in a pond liner formed of electrically insulating material |
| 09/13/1988 | US4771245 Earth testing means for an electric fence network |
| 09/07/1988 | WO1988006737A1 Electro-optic measurement (network analysis) system |
| 09/07/1988 | EP0281227A1 Apparatus and method for detecting spot defects in integrated circuits |
| 09/06/1988 | US4769594 Method and circuit arrangement for measuring the dynamical behavior of a rotating body |
| 09/06/1988 | US4769592 Six-port reflectometer test arrangement |
| 08/30/1988 | US4767982 Concentration detection system |
| 08/23/1988 | US4766389 Capacitor array sensors tactile and proximity sensing and methods of use thereof |
| 08/23/1988 | US4766386 Time domain reflectometer for measuring impedance discontinuities on a powered transmission line |
| 08/23/1988 | US4765187 Liquid thickness gauge |
| 08/18/1988 | DE3704021A1 Circuit for measuring the voltage drop across a variable resistor located in an alternating-current circuit |
| 08/17/1988 | EP0278669A2 Methods and apparatus for frequency response analysis |
| 08/17/1988 | EP0278250A1 Method for the final-stage control of etching processes brought about by plasma-activated ions, radical and/or neutral particles and carried out on electrically insulating layers, especially those of highly integrated semiconductor circuits |
| 08/17/1988 | EP0278147A1 Earth monitoring apparatus |
| 08/17/1988 | CN88200808U Tester for drawing-motor armature |
| 08/10/1988 | CN87211381U Lcr测量仪 Lcr meter |
| 08/10/1988 | CN87100329A Optimum transfer measuring method of ground station |
| 08/09/1988 | US4763071 Nondestructive test instrument for determining fiber volume, ply count and thickness of fiber-containing electrically conductive composite materials |
| 08/09/1988 | US4763064 Device for measuring the electronic characteristics of solid materials |
| 08/09/1988 | US4763062 Conductive EMI test system, a decoupling network therefor |
| 07/27/1988 | EP0276106A2 Method for controlling the amount of moisture associated with a web of moving material |
| 07/27/1988 | EP0275617A1 Probe of use for detecting abnormal tissues |
| 07/26/1988 | CA1239546A1 Capacitive gauging method and apparatus |
| 07/20/1988 | EP0274767A1 Method and circuit for determining the pick-off position of a remotely controlled resistance transmitter |
| 07/19/1988 | US4758777 Surface resistivity meter |
| 07/19/1988 | US4758776 RF interferometer |
| 07/19/1988 | US4758775 Broad band coupler |
| 07/13/1988 | EP0274396A2 Water quality control method, and method and apparatus for measuring electrical conductivity used in the water quality control |
| 07/12/1988 | US4757252 Probe system for measuring the condition of materials |
| 07/06/1988 | CN87214833U Capacitor pair meter |
| 07/06/1988 | CN87205208U Test apparatus for electric pressure-proof of a.c. capacitor |
| 07/06/1988 | CN86207980U Megohm admeasuring apparatus |
| 07/05/1988 | US4755746 Apparatus and methods for semiconductor wafer testing |
| 07/05/1988 | US4755744 Plated sensor for monitoring corrosion or electroplating |
| 07/05/1988 | US4755742 Dual channel time domain reflectometer |
| 06/30/1988 | DE3643185A1 Circuit arrangement for forming the voltage/time area of a very short pulse |
| 06/28/1988 | US4754214 Method and apparatus for determining the dielectric constant of materials, in particular heater ash |
| 06/28/1988 | CA1238683A1 Device for measuring the electronic characteristics of solid materials |
| 06/22/1988 | EP0272161A1 Method and circuit for the linearization of the transfer function of a two-port by digital error samples, particularly of an LF two-port with an asymmetric transfer function |
| 06/22/1988 | EP0271849A2 Instrument for measuring the impedance for determining the change of the impedance of a capacitive sensor by dipping in a fluid |
| 06/21/1988 | US4752881 Electrical resistivity geological surveying apparatus and method utilizing plural cable sections with controlled distributed electrode/cable conductor switching |
| 06/15/1988 | EP0270855A1 Process for the determination of quality factors and/or frequencies of resonant electrical circuits |
| 06/14/1988 | US4751654 Method of and arrangement for measuring impedances in measuring circuits having programmed memory |
| 06/14/1988 | US4751476 Detector device and method for distinguishing between fluids having different dielectric properties |
| 06/14/1988 | US4751465 Spurious resonance control for NMR observe coils |
| 06/09/1988 | DE3732756A1 Schaltungsanordnung zur messung kleiner kapazitaetsdifferenzen Circuit arrangement for the measurement of small kapazitaetsdifferenzen |
| 06/09/1988 | DE3640643A1 Device and method for checking a control circuit of a telecontrol apparatus |
| 06/08/1988 | EP0270422A1 Circuit for measuring the dynamic characteristics of a housing for a high-speed integrated circuit, and method of measuring these dynamic characteristics |
| 06/07/1988 | US4749944 Load detecting device for generator |
| 06/07/1988 | CA1237772A1 Nondestructive testing of multilayers ceramic capacitors |
| 06/02/1988 | WO1988004056A1 Method and apparatus for locating leaks in a multiple layer geomembrane |
| 06/02/1988 | WO1988004055A1 Method and device for detecting insulation resistance |
| 06/02/1988 | WO1988004028A1 Method for detecting thickness variations in the wall of a current conducting tubular body |
| 06/01/1988 | CN86108002A Capacitance deviation testing apparatus for dual gang variable capacitor |
| 05/31/1988 | US4748400 Method for controlling the amount of moisture associated with a web of moving material |
| 05/31/1988 | EP0263848A4 Capacitive chemical sensor for detecting certain analytes, including hydrocarbons in a liquid medium. |
| 05/25/1988 | EP0268447A2 Improvements in or relating to frequency response analysis |
| 05/19/1988 | WO1988003652A1 Linear position sensor |
| 05/18/1988 | EP0039735B1 Apparatus and method for detecting wet and icy conditions on the surface of a pathway |
| 05/17/1988 | US4745361 Electro-optic measurement (network analysis) system |
| 05/11/1988 | DE3636837A1 Inductance measuring instrument |
| 05/11/1988 | CN86102535A Metal-aluminium oxide-silicon construction humidity sensor and its fabricating technology |
| 05/10/1988 | US4743837 Circuit for measuring capacitance by charging and discharging capacitor under test and its shield |
| 05/03/1988 | US4742295 Static conductivity tester |
| 04/28/1988 | DE3635518A1 Method and device for measuring the length of a cable |
| 04/27/1988 | EP0265073A1 Test arrangement |
| 04/26/1988 | US4741023 On-line test and diagnostic system for power system stabilizer |
| 04/26/1988 | US4740757 Method and apparatus for locating leaks in a multiple layer geomembrane liner |
| 04/26/1988 | US4740745 Polarity and continuity tester for primary and secondary automotive circuits |
| 04/26/1988 | CA1235749A1 Precision nondestructive testing of metals |
| 04/26/1988 | CA1235743A1 Focused very high frequency induction logging |
| 04/21/1988 | WO1988002842A1 A method and measuring system for contactless measuring the values of magnitudes relating to electrically conductive materials |
| 04/21/1988 | DE3701089C1 Method for calibrating the two resistors of a voltage divider in a hybrid circuit |
| 04/21/1988 | DE3634802A1 Arrangement for selective detection of a short to earth in the rotor circuit of an electric machine |
| 04/21/1988 | DE3634052A1 Method and circuit arrangement for measuring the resistance value of a sensor resistor |
| 04/20/1988 | EP0263848A1 Capacitive chemical sensor for detecting certain analytes, including hydrocarbons in a liquid medium. |
| 04/19/1988 | US4739515 Voltage standing wave ratio bridge measuring circuit |
| 04/19/1988 | US4739285 Oscillator having all-pass filter with resistance bridge for detecting physical parameters |
| 04/19/1988 | US4739258 Dynamic testing of thin-film conductor |
| 04/19/1988 | US4739251 Analysis circuit for an amplitude-modulated electric signal comprising a frequency transposer |
| 04/19/1988 | US4739249 Method and apparatus for the measurement of the properties of sheet- or foil-like materials of low electrical conductivity |
| 04/18/1988 | EP0247157A4 Adaptive impedance mismatch detector system. |
| 04/18/1988 | EP0192708A4 Nmr tuning procedure. |
| 04/13/1988 | CN87102941A Measurement circuit |