Patents
Sitemap › G01 - Measuring; Testing › G01R - Measuring electric variables; Measuring magnetic variables › G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850)
12/1984
12/05/1984EP0127139A1 Supply-voltage monitoring circuit
12/04/1984US4486706 Power flow direction detector
12/04/1984US4486660 Electron beam testing device for stroboscopic measurement of high-frequency, periodic events
11/1984
11/28/1984EP0126533A1 Test instrument with flexibly connected head
11/28/1984EP0126427A2 Level detector for use with a differential amplifier circuit
11/28/1984EP0126242A1 Circuitry for monitoring an operating voltage
11/27/1984US4485342 Load driving circuitry with load current sensing
11/20/1984US4484291 Comparison circuit for determining the statistical equality of two analog signals
11/20/1984CA1178371A1 Method of and apparatus for automatically compensating for variations in output response characteristics of sensors and the like
11/14/1984EP0124967A1 D.C. current transformer circuits
11/14/1984EP0124944A1 Peak detector
11/13/1984US4482892 Caution lamp for high voltage controller
11/13/1984US4482862 Current sensor
11/13/1984CA1177912A1 Mos comparator circuit
11/07/1984EP0070844A4 Gating circuit.
11/07/1984EP0030980B1 Stabilized dc power source
11/06/1984US4481596 Method of and apparatus for automatically compensating for variations in output response characteristics of sensors and the like
10/1984
10/31/1984EP0123459A1 Loop test circuit
10/30/1984US4480221 Level meter circuit
10/16/1984US4477779 Dual channel gated peak detector
10/16/1984US4477775 Method and apparatus for a fast internal logic check of integrated circuits
10/10/1984EP0121507A1 Single-pole voltage tester
10/09/1984US4476352 Telephone subscriber line looping circuit
10/09/1984CA1175919A1 Device for discriminating between two values of a signal with dc offset compensation
10/09/1984CA1175897A2 Pump failure protection for liquid transmission pipelines
10/09/1984CA1175677A1 Temperature compensation for bridge circuits
10/02/1984US4475081 Electronic watthour meter
10/02/1984CA1175504A1 Comparator circuit
10/02/1984CA1175487A1 Means for sensing the ratio between the line voltage and the frequency of an a.c. network
09/1984
09/25/1984US4473810 Device for measuring the current which flows in a conductor
09/25/1984US4473759 Power sensing circuit and method
09/13/1984WO1984003565A1 Method for measuring an electric signal, series/parallel feed-back measuring circuit and application of said method or measuring circuit to measure voltage sources having a very high ohmic inner impedance
09/12/1984EP0118396A1 Measuring process for electric signals using a series-parallel feed-back circuit, and application of this process or circuit to the measuring of voltage sources with extremely high internal impedances
09/11/1984US4471302 Method for representing logical status changes of a plurality of adjacent circuit nodes in an integrated circuit in a logic image employing a pulsed electron probe
09/11/1984US4470711 Electrical device termination high temperature indicator
09/04/1984US4470043 Non-fade bouncing ball display
09/04/1984US4470004 Charge indicating system
09/04/1984CA1173665A1 Method for detecting whether dissimilar metals are being welded
08/1984
08/29/1984EP0116826A1 Device for measuring potential differences
08/28/1984US4468571 Standby power system
08/22/1984EP0116397A2 Voltage responsive circuit
08/21/1984US4467433 Device for determining a trigger point on an electric signal with given amplitude distribution over time
08/21/1984US4467391 Monitor for an electrically-controlled system
08/21/1984US4467272 Circuit for measuring inductance changes
08/15/1984EP0115896A1 Optical indicator device
08/15/1984EP0115625A1 Process and device for optically and/or acoustically indicating the charge of a battery or an accumulator
08/14/1984US4466042 Trip indicator assembly for electronic circuit breaker
08/07/1984US4464661 System monitor circuit having first and second phase-sensitive demodulator circuits coupled to first and second loads, and a comparator section for monitoring the loads
08/07/1984US4464629 Hall element device
08/07/1984US4464623 Probe point device for electrical tests
08/01/1984EP0114536A1 Multi-probe measuring apparatus
07/1984
07/31/1984US4463272 Automatic drift correction
07/31/1984US4463270 MOS Comparator circuit
07/31/1984US4463267 Power supply monitor
07/31/1984US4462513 Testing coins
07/24/1984US4461964 Voltage comparator using CMOS transistors
07/24/1984US4461961 Accurate high speed absolute value circuit and method
07/17/1984US4460867 Method and circuit for measuring of current
07/17/1984CA1171139A1 Dual mode tone detector circuit
07/11/1984EP0112948A1 Power frequency detection system
07/10/1984US4459574 Driving circuit for a coil
07/10/1984US4459545 Apparatus for detecting a current peak value and a voltage peak value
07/10/1984US4459493 Absolute magnitude circuit
07/04/1984EP0106843A4 Imrpoved inductance to frequency converter circuit.
07/03/1984US4458198 Fault indicator having a remote test point at which fault occurrence is indicated by change in magnetic state
07/03/1984CA1170364A1 Memory buffer
06/1984
06/27/1984EP0112088A1 Method for using a charge coupled device as a peak detector
06/26/1984USRE31613 Measuring transformer
06/26/1984US4456943 Current sensing relay
06/26/1984US4456873 Cable mounted magnetic core assembly
06/26/1984US4456840 Comparator circuit
06/26/1984CA1169972A1 Analog-to-digital converter
06/20/1984EP0111230A1 Voltage comparator circuit
06/19/1984US4455654 Test apparatus for electronic assemblies employing a microprocessor
06/19/1984US4455532 Apparatus for measuring charged particle beam
06/19/1984US4454750 Apparatus for generating a knock signal for use with an internal combustion engine
06/19/1984EP0086778A4 Battery voltage monitoring and indicating apparatus.
06/12/1984US4454553 D.C. Current detector
06/12/1984US4454500 Analog data acquisition device
06/12/1984US4453550 Method and means for detecting a periodic wave structure
06/12/1984CA1169153A1 Programmable signal analyzer
06/05/1984US4453129 Method for measuring the charge state of an accumulator and a device for implementing such method
05/1984
05/30/1984EP0109914A1 Device for detecting the presence of voltage in electrical installations
05/29/1984US4451781 Moisture tester
05/23/1984EP0109227A1 Alarm unit
05/23/1984EP0108927A1 High speed charge balancing comparator
05/17/1984EP0067163A4 Linear full wave rectifier circuit.
05/16/1984EP0108676A1 Measuring device for very low currents
05/15/1984US4449223 Eye opening monitor
05/15/1984US4449058 Load status monitoring apparatus
05/15/1984CA1167528A1 Multimeter with tone indicator
05/09/1984EP0107884A1 Digital circuit for measuring the instantaneous frequency of a frequency-modulated or non modulated signal, as well as a television or radio receiver equipped with such a circuit
05/09/1984EP0107797A1 An input circuit for converting an a.c. input voltage to a logic level voltage
05/09/1984EP0107756A2 Electronic circuit for analyzing the operation of electrochemical cells
05/08/1984US4447806 Test circuit for electrical continuity of a load circuit
05/08/1984CA1167164A1 Process, device and taximeters for avoiding fraud on the price indicated by the luminous display means of an electronic taximeter
05/02/1984EP0107033A1 Amplitude detector for pulse-shaped signals with a high pulse repetition frequency
05/02/1984EP0107032A1 Process for suppressing a disturbance while measuring signals with a corpuscular probe, and device for carrying out such a process
05/02/1984EP0106843A1 Imrpoved inductance to frequency converter circuit
05/01/1984US4446425 Measurement of electrical signals with picosecond resolution
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