Matches 1 - 50 out of 202 1 2 3 4 5 >


Match Document Document Title
9030206 Method and apparatus for characterizing process control equipment coupling integrity  
In a process plant, a first series of measurements from a coupling interface are received. The first series of measurements are stored. A second series of measurements from a coupling interface...
9018970 Method of testing partial discharge of rotating electrical machine driven by inverter  
In a rotating electrical machine, a conductive foil or conductive rubber is applied to the surface of insulation layer of a conductor series connection area or to the surface of insulation layer...
9018960 Method and device for enhancing the reliability of generator ground fault detection on a rotating electrical machine  
A method for enhancing the reliability of generator ground fault detection based on a signal injection scheme, wherein the generator includes a winding. The method includes injecting a test signal...
9000773 Method and apparatus for characterizing process control equipment integrity  
In a process plant, a first series of impedance measurements from a valve body are received. The first series of impedance measurements are stored. A second series of impedance measurements from...
8995099 Control system for electrical cord reel  
In an electrical cord reel, a rotatable member can rotate about a winding axis to spool and unspool a linear material. An input power connector can couple to an electrical power source. An output...
8963556 System and method for detecting excess voltage drop in three-phase AC circuits  
A system and method for detecting excess voltage drop (EVD) in a three-phase electrical distribution circuit includes a diagnostic system comprising a processor that is programmed to receive...
8963545 Magnetic sensor  
The present invention relates to a magnetic sensor that provides the sensitivity adjustment on a wafer and that has a superior mass productiveness and a small characteristic variation. The...
8917084 High voltage sensing mechanism with integrated on-off switch  
The present invention is an efficient high voltage sensing mechanism that operates only when an individual needs to test the voltage across a wire. The present invention attaches around a tested...
8907679 Meter apparatus having three-phase judgment function  
A meter apparatus having three-phase judgment function includes a control unit, a multimeter measurement unit electrically connected to the control unit, a three-phase judgment unit electrically...
8890535 Power supply aging system and load balance control method  
A power supply aging system and a load balance control method. The power supply aging system includes: a system share supply unit (201) for producing a DC voltage for the need of the system...
8879141 Analog interferometric modulator  
Methods and devices for calibrating and controlling the actuation of an analog interferometric modulator configured to have a plurality of actuation states. Devices and methods for calibrating an...
8878547 Insulation resistance monitoring for vehicles with high-voltage power net  
A monitor for monitoring isolation resistance, impedance, or other isolation reflective conditions between vehicle systems as contemplated. The monitor may be useful in assessing insulation...
8698505 Measurement apparatus detecting consumption current of a display  
A measurement apparatus includes a display unit, a current detection unit configured to output a detection signal if an increase in a consumption current of the display unit is detected, a...
8692525 Electrical power tool for operating with alternating current  
The invention relates to an electrical power tool, particularly an electric hand power tool, for operating with alternating current, having an electric motor, and electronic control device, and an...
8604798 Short-circuit detection for touch panels  
A short circuit detection module for a touch panel includes first and second short circuit detection circuits. The first short circuit detection circuit is coupled to a first conductive line of...
8587335 Methods for providing proper impedance matching during radio-frequency testing  
Wireless electronic devices may include a transceiver, an antenna resonating element coupled to the transceiver via a transmission line path, transceiver and antenna impedance matching circuits,...
8587322 Methods and apparatus for motor emulation  
Methods and apparatus provide for: a first DC bus operating to support a first DC voltage potential and for connecting to a DC input of a motor driver inverter circuit; a motor emulator circuit...
8581596 Current leakage detector of construction machine  
An inverter is forcibly operated to supply electric power to a motor, thereby performing detection of a current leakage, on condition that a power-on operation is performed, that the motor is...
8564284 Fault detection for laminated core  
A method of evaluating the condition of a laminated core of an electric machine including positioning a magnetic flux injection excitation yoke extending between a pair of teeth of the laminated...
8508220 Fault detection for laminated core  
A method and system for evaluating the condition of a laminated core of an electric machine, and including a first yoke wound with a first winding and having a first pair of arms spanning between...
8502542 Apparatus and method for monitoring a phase line of a section of an electrical energy transmission line  
An appliance and a method are intended to monitor a phase line of a section of an electrical energy grid line. The appliance comprises a device for monitoring a parameter of a phase line. The...
8482289 Method for operating a power tool with a diagnostic device  
In a method for operating a power tool with a diagnostic device, wherein the power tool has an internal combustion engine, a generator as an energy supply, and an electronic control unit, wherein...
8421472 Apparatuses and methods for testing welding apparatuses  
A testing apparatus for testing a welding apparatus is disclosed. The testing apparatus includes a receptacle, a fault indicator, and a power supply. The receptacle includes a grounding socket and...
8410785 Electrical power system phase and ground protection using an adaptive quadrilateral characteristics  
A quadrilateral distance module may be used to detect faults in an electrical power system. A resistive coverage of the quadrilateral distance module may be defined by an adaptive resistance...
8378611 Computer fan alarm circuit  
A circuit for alarming abnormal state of a computer fan includes a detection circuit coupled to the computer fan, a controller coupled to the detection circuit and the computer fan, an alarm unit...
8373421 Ambulatory infusion device with sensor testing unit  
An ambulatory infusion device for infusion of a liquid drug into a patient's body over an extended period of time and methods thereof are disclosed. The device includes a sensor assembly, which...
8362658 Determination of the load capability of a DC voltage source which is connectable to an electric power grid via an inverter and a grid disconnect switch  
A method for determining a load capability of a direct current (“DC”) voltage source connectable to an alternating current (“AC”) power grid having a predetermined frequency via an inverter and a...
8339142 System for diagnosing sensors to find out abnormality therein  
In an abnormality diagnosing system for first and second current sensors for measuring a current, an obtaining unit obtains at least one pair of measured values of the first and second current...
8340829 Method and apparatus of detecting and compensating for DC residual fault currents on electrical systems  
This invention relates to a method and apparatus of detecting and compensating for DC residual fault currents on electrical systems. In particular, the present invention relates to a method and...
8322236 Measuring apparatus and method for detecting moisture at a measurement voltage input of the measuring apparatus  
A measuring apparatus having a measurement voltage input with at least one input contact for an input voltage of a measuring element and a method for detecting moisture on the measurement voltage...
8326551 Method and system for incorporating electronic signature analysis in low voltage power supplies  
A method and system for incorporating electronic signature analysis in a low voltage power supply to centrally monitor current consumption is disclosed. The electrical loads powered by the low...
8249750 Air conditioner  
An indoor unit includes an indoor side switch device which is brought into a closed state at a startup time when operation starts from a standby state. An outdoor unit includes a startup power...
8228648 Compressor protection and grid fault detection device  
A compressor monitoring system includes current and voltage monitors, current and voltage averaging modules, a control module, and a switch. The current monitor measures a current drawn by a motor...
8195355 Fault diagnosis system in load driving arrangement and fuel pump control system  
In a fault diagnosis system (10) in a load driving arrangement, the fault diagnosis system detecting a fault in the load driving arrangement in which a controller (13) outputs a control signal to...
8154302 Device for detecting the failure of an electrical power supply for a logic unit  
An electrical power supply device for a logic unit (1), includes a control member (7) that can transmit a control voltage (6), a power relay (3), transmitting a power voltage (2) when it is...
8148995 Degradation determination device for heater of gas sensor and method for diagnosing the heater  
A sensor element detects exhaust gas emitted from an internal combustion engine. A heater is supplied with electricity from a power source so as to heat the sensor element. A detection unit...
8134372 Pressure tank fault detector and method  
A pressure tank fault detector and method provides a system for detecting a fault in a pressure tank, such as a well water tank. The system includes a current transformer positioned adjacent a...
8114265 Efficiency optimization and damage detection of electrolysis cells  
There is described a method and a system for evaluating damage of a plurality of cells in an electrolyser. The method comprises acquiring a voltage for each one of the cells; comparing the voltage...
8108191 Electric motor simulator and method for testing motor driver devices  
Apparatus to exercise electrical motor drivers by electrically simulating a geared electric or electrical motor by providing an electronic load for the power signals that are applied to it....
8098075 Testing method for electronic apparatus  
An electronic apparatus includes a first power contact, a second power contact, and a control unit. The first power contact is electrically connected with an anode of a power supply source, and...
8045302 Compressor protection and grid fault detection device  
A compressor monitoring system includes current and voltage monitors, current and voltage averaging modules, a control module, and a switch. The current monitor measures a current drawn by a motor...
7990093 Electric motor control apparatus  
A control apparatus for a multiphase AC electric motor having an inverter includes a current control including an abnormal-state current controller; an abnormal-state detector that detects an...
7969046 Power supply control apparatus  
The present invention is to provide a power supply control apparatus which can connect a ground to a suitable electric potential when the ground is disconnected. The power supply control apparatus...
7848852 Air conditioner  
An indoor unit includes an indoor side transmitting and receiving section, a relay which is put in a closed state in a standby state, and an indoor control section which controls the relay on the...
7825817 Hardwired alarm system with power-on sequence  
A sensor and alarm system having a power-on sequence. The system has a power supply permanently-like connected to a power line of a facility. There may be a power interrupt to the power supply,...
7808245 Testing method for a ground fault detector  
A testing system for a ground fault detection system of an electrical system of a machine is disclosed. The testing system has a low voltage power source, the low voltage power source capable of...
7791352 Generator regulator having a diagnostic function for semiconductor components  
A method for detecting a fault in semiconductor components in electrical machines, e.g., three-phase generators, used in the automotive field is described. The electrical machine is equipped with...
7777495 Method and a device for detecting signal lamps in a vehicle  
Provided are a device and a method of detecting signal lamps in a vehicle, in particular in a large vehicle, being provided with a plurality of signal lamps each being capable of switching between...
7750501 System and method of over voltage control for a power system  
A system and method for preventing over voltages in a power system coupled to an electric machine are disclosed. Briefly described, one embodiment is a method comprising detecting an operating...
7714587 Systems and methods for detecting a faulty ground strap connection  
Systems and methods are disclosed for detecting a faulty ground strap connection for a machine hosting a high voltage system. In one embodiment, a fault detection and compensation system includes...

Matches 1 - 50 out of 202 1 2 3 4 5 >