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Class 324/649 - Lumped type parameters


Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter including the measuring or testing of any
No. of patents: 99
Last issue date: 06/07/2011


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NumberTitleIssue Date
7956620System and method for augmented impedance sensing
An impedance monitoring circuit for an electrosurgical generator is disclosed. The monitoring circuit includes an isolation transformer coupled to at least one of an active terminal and a return terminal of an electrosurgical generator, wherein the isolation transfo...
06/07/2011
7746084Impedance measurement using line-to-line current injection
An unbalanced line-to-line current is injected at an injected frequency in a three-phase ac circuit. A first set of voltages and currents are obtained. A first set of transformed voltages and transformed currents are produced. The circuit is injected with a second u...
06/29/2010
7675295Passive wireless corrosion sensor
A passive wireless corrosion sensor is disclosed. A circuit is configured to provide a signal response when energized. An antenna is configured to wirelessly receive energy for energizing the circuit and to receive the signal response from the circuit and transmit t...
03/09/2010
7663377System and method for high resolution sensing of capacitance or other reactive impedance change in a large dynamic range
Systems and methods are provided for sensing or measuring capacitive or inductive reactance or changes in reactance in which the sensed reactance is coupled with a known resistance in a sensor circuit and a start signal is provided to the sensor circuit, and a progr...
02/16/2010
7622933Electrode
An apparatus and method for sensing characteristics of a liquid are disclosed. The exemplary embodiment may have an electrode for transmitting electrical signals associated with characteristics of the liquid to and from the liquid. The electrode may have an aperture...
11/24/2009
7598751Impedance-based arc fault determination device (IADD) and method
Embodiments according to the present invention provide an Impedance-based Arc-Fault Determination Device (IADD) and method that, when attached to an electrical node on the power system and through observations on voltage, current and phase shift with a step load cha...
10/06/2009
7459918Impedance measurement system with incorporated internal measurement drift compensation networks
The present technology provides an Impedance Measurement System (ZMS) for measuring the complex impedance of each well of a single well or multiwell microtiter plate utilizing a novel combination of parallel impedance measurement channels, multiplexing, and referenc...
12/02/2008
7423433Method and system for multi-frequency inductive ratio measurement
A method of testing a cable is provided. The method includes measuring at least one inductive ratio for the cable, determining an inductive gap from the at least one inductive ratio, measuring a parallel impedance of the cable, and determining a resistance of the ca...
09/09/2008
7405576Method and apparatus for measuring high-frequency electrical characteristics of electronic device, and method for calibrating apparatus for measuring high-frequency electrical characteristics
Two ends of a transmission line whose electrical characteristics per unit length are known are connected to associated measurement ports of a network analyzer. A short standard is shunt-connected to at least three points in the longitudinal direction of the transmis...
07/29/2008
7375534Method and apparatus for measuring high-frequency electrical characteristics of electronic device, and method for calibrating apparatus for measuring high-frequency electrical characteristics
A plurality of signal conductors and ground conductors are connected to associated measurement ports of a network analyzer. A short standard is connected between each of the signal conductors and the ground conductor at least three points in the longitudinal directi...
05/20/2008
7372438Electroluminescent display
An electroluminescent display includes: a pixel region including devices arranged therein and adapted to emit light in response to a data signal; a scan driver adapted to supply a switching signal to a gate electrode of a first switching device; a data driver adapte...
05/13/2008
7355414Test apparatus with low-reflection signal distribution
A test apparatus includes a signal source that generates a radio-frequency test signal and is connected to the input connection of an arrangement. The arrangement simultaneously supplies an electrical radio-frequency signal to a plurality of receivers and via a plur...
04/08/2008
7323880Ground circuit impedance measurement
Novel apparatus and method accurately measure ground circuit impedance. A ground circuit and electrical current source adjusted to 25 amperes or less simulate a ground fault. Ground impedance is determined by dividing voltage drop by amperage to determine impedance ...
01/29/2008
7317161Shielded cable, and bioelectrical impedance value or biological composition data acquiring apparatus using the same
There are provided a shielded cable having a core wire for carrying an electrical signal, and a shield around the circumference of the core wire and connected to the core wire via a drive circuit, wherein the drive circuit has a band limiting circuit which decreases...
01/08/2008
7314997High speed data communication link using triaxial cable
A high speed data communication link has a circuit for providing a differential signal having first and second opposite phase components and a triaxial cable connected to receive the positive phase component of the signal on the inner conductor and the negative phas...
01/01/2008
7315170Calibration apparatus and method using pulse for frequency, phase, and delay characteristic
In a device for measuring the properties of a device under test connected by a signal transmission path having reciprocity, a terminal on the device under test side of the signal transmission path is opened; pulse signals are transmitted to a terminal on the measuri...
01/01/2008
7239155Electrochemical impedance measurement system and method for use thereof
Disclosed is a method and apparatus for an electrochemical impedance measurement, and in particular circuitry and components employed for such measurements. The system employs an injected broadband AC signal to produce an associated response signal. The subsequent a...
07/03/2007
7212016Apparatus and methods for measuring resistance of conductive layers
Apparatus and methods for measuring the electrical resistance of conductive materials are disclosed. In one embodiment, an apparatus includes a housing, and first, second, third, and fourth conductive members projecting outwardly from the housing. The conductive mem...
05/01/2007
7212011Capacitor deterioration judgment method
A method for determining the deterioration of a capacitor that increases the measurement accuracy to have an improved reliability is disclosed. In this method for determining the deterioration of a capacitor, the deterioration of a capacitor including a pair of elec...
05/01/2007
7205782Scanned impedance imaging system method and apparatus
The resolution and contrast of impedance measurements and scans are improved by using a non-contact impedance probe comprising an inner conductor configured to bear a measurement signal and an outer conductor configured to bear a shielding signal. The measurement si...
04/17/2007
7188038Method of determining an electrical capacitance of a circuit component and method of defining a dimension of such a component
A method of estimating an electrical capacitance of a circuit component is carried out by decomposing the capacitance into a sum of terms associated with respective contributions from a central part and peripheral parts of the component. A component to which the met...
03/06/2007
7170141Method for monolithically integrating silicon carbide microelectromechanical devices with electronic circuitry
A method of forming electronics and microelectromechanical on a silicon carbide substrate having a slow etch rate is performed by forming circuitry on the substrate. A protective layer is formed over the circuitry having a slower etch rate than the etch rate of the ...
01/30/2007
7167773Process and apparatus for improving and controlling the curing of natural and synthetic moldable compounds
A process for curing a moldable compound under a plurality of curing conditions by: (1) obtaining time dependent data streams of dielectric or impedance values from a plurality of sensors distributed within a curing mold, wherein the moldable compound is a dialectri...
01/23/2007
7148701Apparatus for measuring electrical impedance
The present invention provides an apparatus for measuring electrical impedance comprising: two input electrodes contacted to a subject for measuring impedance; a difference amplifier to which two signals inputted to the two input electrodes are inputted; a device fo...
12/12/2006
7141990Device for detecting degradation of a component
An apparatus for monitoring the structural integrity of a component. A monitoring structure is applied to a component that is subject to structural degradation. The monitoring structure includes an electrical conductor that becomes cracked if the component becomes s...
11/28/2006
7135870Device for determining the composition of a fluid mixture
A method and apparatus are disclosed for determining the concentration of individual components within a fluid mixture by determining the permittivity of the individual components. The method and apparatus use a reference sensor and at least one measurement sensor p...
11/14/2006
7132822Multi-processor restart stabilization system and method
A supervisory system and method including a voltage detection circuit, a status signal interface, a memory, and a supervisory processor configured to predict a pending low power condition, to save status parameters, and to take actions to manage a plurality of proce...
11/07/2006
7129713Capacitive moisture sensor
A moisture sensing apparatus includes an oscillator for supplying an AC signal to a driven ring of a sensor having a pad inside the ring, and a ground plate around the ring. An amplifier forms part of a temperature-compensated, precision rectifier, and is connected ...
10/31/2006
7115210Measurement to determine plasma leakage
Disclosed is a method and system for detecting abnormal plasma discharge that is useful in, for example, detecting plasma leakage in a reactive ion etching (RIE) chamber. The system includes electrical contacts connected to the chamber that provide an input signal t...
10/03/2006
7102357Determination of worst case voltage in a power supply loop
Various systems, methods, and programs embodied in a computer readable medium are provided for determining a worst-case impedance and worst-case voltage of a power supply loop coupled to a power input of a die. In various embodiments, the worst-case impedance of a p...
09/05/2006
7088112Sensor capacity sensing apparatus and sensor capacity sensing method
A capacitor C and an impedance converter Hiz are included in a feedback circuit of the first operational amplifier OP1 in series; an electrode P1 of a capacitive sensor is connected to a connection point of the said capacitor and the converter ...
08/08/2006
7088115Electrochemical impedance spectroscopy system and methods for determining spatial locations of defects
A method and apparatus for determining spatial locations of defects in a material are described. The method includes providing a plurality of electrodes in contact with a material, applying a sinusoidal voltage to a select number of the electrodes at a predetermined...
08/08/2006
7071712Method for the automatic identification of sensor sensitivity
A method for the automatic identification of sensor sensitivity, according to which resistance of a specific magnitude is allocated to the sensor. The resistance is used to allocate the sensor to a specific sensor group with a predetermined sensitivity range. ...
07/04/2006
7068040Ground circuit impedance measurement apparatus and method
Novel ground circuit impedance measurement apparatus and method accurately measure ground circuit impedance. A ground circuit and electrical current source of 25 amperes or less simulate a ground fault. Ground impedance is determined by dividing voltage drop by ampe...
06/27/2006
7068041Method and system for multi-frequency inductive ratio measurement
A method of testing a cable is provided. The method includes measuring at least one inductive ratio for the cable, determining an inductive gap from the at least one inductive ratio, measuring a parallel impedance of the cable, and determining a resistance of the ca...
06/27/2006
7049806Microelectricalmechanical system with improved beam suspension
In a MEMS device employing a beam supported by transverse arms, potential bowing of the transverse arms caused by fabrication processes, temperature or local self-heating from resistive losses is accommodated by flexible terminations of the transverse arms. Alternat...
05/23/2006
7023223Impedance measuring circuit and capacitance measuring circuit
An electrostatic capacitance detection circuit 10 comprises an AC voltage generator 11, an operational amplifier 14 of which non-inverting input terminal is connected to specific potential (a ground in this example), an impedance converter 16...
04/04/2006
7019543Impedance monitoring system and method
An apparatus (14) for and method of measuring impedance in a capacitively coupled plasma reactor system (10). The apparatus includes a high-frequency RF source (150) in electrical communication with an upper electrode (50). A first high-p...
03/28/2006
7012438Methods and systems for determining a property of an insulating film
A method for determining a property of an insulating film is provided. The method may include obtaining a charge density measurement of the film, a surface voltage potential of the film relative to a bulk voltage potential of the substrate, and a rate of voltage dec...
03/14/2006
6995545Control system for a sputtering system
A fault handling algorithm processes a plurality of fault status signals from a sputtering system in a period of time to generate at least one command signal for affecting the operation of a power generator. ...
02/07/2006
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