Class / Patent application number | Description | Number of patent applications / Date published |
324537000 |
Of individual circuit component or element
| 4914 |
324512000 |
For fault location
| 192 |
324509000 |
Of ground fault indication
| 175 |
324555000 |
Instruments and devices for fault testing
| 112 |
324503000 |
In vehicle wiring
| 79 |
324501000 |
Using radiant energy
| 62 |
324511000 |
Of electrically operated apparatus (power tool, appliance, machine, etc.)
| 57 |
324508000 |
With electric power receptacle for line wire testing
| 18 |
324502000 |
In an ignitor or detonator | 3 |
20100259274 | Testing an inductive load of a device using a modulated signal - A device has built-in inductive load testing capabilities. The device includes a device housing, an inductive load disposed within the device housing; and test circuitry disposed within the device housing. The test circuitry is constructed and arranged to effectuate application of a modulated test signal to the inductive load, and obtain a result signal in response to the application of the modulated test signal to the inductive load. The test circuitry is further constructed and arranged to generate an output signal indicating that the inductive load is in one of (i) a shorted inductive load state, (ii) a normal inductive load state, and (iii) an abnormally high inductive load state, based on the result signal. Such test circuitry is well-suited for testing a variety of devices having inductors/coils which are susceptible to defects (e.g., a solenoid, a motor winding, various actuator components, etc.). | 10-14-2010 |
20140145725 | Method and System for Dianostic Measurement of Motor Vehicle Restraint System Squib Loop Resistance - A method of measuring squib loop resistance including non-linear elements in a restraint control module is disclosed by the present invention. The squib loop resistance is comprised of both linear and non-linear elements. The non-linear elements are linearized into resistive components about the bias points used to make the squib loop resistance measurement. The calculation of the linear squib loop resistance is provided by comparing the complete squib loop resistance and the linearized value of the non-linear elements. | 05-29-2014 |
20150108994 | INSTRUMENT TEST ARRANGEMENT COMPRISING TEST EQUIPMENT - To provide the user of an RF-surgical instrument with a non-hazardous short test operation, for example so as to test the ignitability of an argon plasma probe, provision is made for an instrument test arrangement, which is installed into a feeding medical device or into a neutral conductor connecting cable or which is provided as plug adapter, which is to be plugged between the device and the neutral conductor connecting cable. The instrument test arrangement comprises at least one or, better yet, two ignition test electrodes, which are connected to conductors of the device or of the neutral conductor cable, preferably via impedance components. The ignition test electrodes can be accessed insofar as a spark can be created simultaneously to both ignition test electrodes by means of an operational probe or an instrument. | 04-23-2015 |
Entries |
Document | Title | Date |
20080197854 | Harmonic Derived Arc Detector - An arc detection system includes a radio frequency (RF) signal probe that senses a RF signal at an input of a RF plasma chamber and that generates a signal based on at least one of the voltage, current, and power of the RF signal. A signal analyzer receives the signal, monitors the signal for frequency components that have a frequency greater than or equal to a fundamental frequency of the RF signal, and generates an output signal based on the frequency components. The output signal indicates that an arc is occurring in the RF plasma chamber. | 08-21-2008 |
20080315888 | INDUCTION COIL RESISTANCE TESTER - Inventive subject matter described herein includes an induction coil resistance tester, comprising: a base effective for absorbing vibration; a mechanism for moving a sample in x, y, and z directions; a scale for measuring weight of the sample; and an ohmmeter for measuring resistance of the sample. | 12-25-2008 |
20090015265 | Acoustic Emission Sensor and Method For Checking Operating State of Acoustic Emission Sensor - The object is to make it possible to check the operating state such as degradation in sensitivity of an AE sensor when it is used actually. There are provided an AE conversion element | 01-15-2009 |
20090027058 | Integrated circuit and integrated circuit package - An integrated circuit includes a monitoring-target circuit portion | 01-29-2009 |
20090079435 | Load Drive Circuit - According to the present invention, the operation of a diagnostic circuit within a load drive circuit, which has been built into an electronic control device, is checked without modifying the electronic control device or the like. The load drive circuit, which drives a load such as a solenoid using a DC power supply as a power supply, includes a drive circuit and a diagnostic circuit which is independently provided within the drive circuit. Upon input of a drive-stop signal from a control circuit that controls the drive circuit, the operation of at least the drive circuit stops, so that whether the diagnostic circuit, which diagnoses the condition of the load, is normally operating or not is checked in a condition in which the load drive circuit has been built into the electronic control device. | 03-26-2009 |
20090085572 | METHOD AND APPARATUS FOR DIAGNOSING INVERTER LINKAGES - A method for diagnosing the linkages of an inverter including a controller connected to switching devices that are between a DC input and a multi-phase output. The inverter can be diagnosed to determine whether the control signals provided to the switching devices are being properly provided to the inverter and whether the inverter is operating properly. Diagnosis of the inverter is advisable upon commissioning or after completion of a repair. The controller can provide at least one signal to the switching devices and the signal can be monitored adjacent to the switching devices to ensure that the switching devices are receiving the correct signals from the controller. The controller can provide at least one signal to the switching devices and the output of the inverter can be monitored to determine whether the inverter operates in accordance with the provided signal. | 04-02-2009 |
20100066381 | APPARATUS AND METHOD FOR ADAPTIVE FAULT DETECTION IN MV DISTRIBUTION CIRCUITS - A method and a protective device operable to perform the method are provided, wherein the method is for detecting and analyzing faults in a first cable and one or more other cables, which convey power in a three phase feeder system. Current magnitude in the first cable is compared to a threshold level. If the current magnitude exceeds the threshold level, the duration of the condition is measured. If the duration falls within a predetermined duration range, a predetermined time interval is allowed to pass and then a determination is made whether a fault is detected in the one or more other cables. If a fault is not detected in the one or more other cables, then a determination is made that a single phase fault has occurred in the feeder system. | 03-18-2010 |
20100102823 | ERROR RECOGNITION IN A CONTROL UNIT - The invention relates to an error recognition device for detecting an error in an electrical component ( | 04-29-2010 |
20100123464 | ULTRA-HIGH FREQUENCY PARTIAL DISCHARGE ARRAY SENSOR APPARATUS FOR HIGH-VOLTAGE POWER APPARATUS - The ultra-high frequency partial discharge array sensor apparatus for a high-voltage power apparatus includes: a sensing unit which detects an electromagnetic wave partial discharge signal generated due to an internal defect of a high-voltage power apparatus and includes a plurality of sensors installed to detect information related to the position where the defect occurs; an anti-surge filter unit which prevents a surge input from the sensing unit; a signal delay time adjusting unit which equally adjusts delay times of signals input from the anti-surge filter unit; a signal switching unit which selectively transmits or blocks signals input from the signal delay time adjusting unit; a connector unit which connects a signal transmitted from the signal switching unit to the outside; and a sensor body which has a receiving space. | 05-20-2010 |
20100244848 | SYSTEM FOR TESTING CONNECTIONS BETWEEN CHIPS - In accordance with an aspect of the application, there is provided a system for testing, including a first chip, a second chip, and first and second connections. The first connection is configured to couple a first pin of the first chip to a first pin of the second chip, and to transmit an initial signal from the first chip to the second chip. The second connection is configured to couple a second pin of the first chip to a second pin of the second chip to return the signal as a returned signal to the first chip. The first chip comprises comparison circuitry configured to compare the returned signal with the initial signal | 09-30-2010 |
20100295551 | DEVICE AND METHOD FOR INDUCTIVE MEASUREMENTS - SELF TEST - Method for nondestructive and noncontact detection of faults in a test piece, with a transmitter coil arrangement with at least one transmitter coil that transmits periodic electromagnetical AC fields to a test piece, a receiver coil arrangement with at least one receiver coil for detecting a periodic electrical signal having a carrier oscillation whose amplitude and/or phase is modulated by a fault in the test piece. A signal processing unit produces a useful signal from the receiver coil signal, and an evaluation unit evaluates the useful signal to detect a fault in the test piece. A self-test unit undertakes systematic quantitative checking of signal processing functions of the signal processing unit and/or of the transmitter coil arrangement and/or of the receiver coil arrangement and/or upon external request undertakes calibration of the signal processing unit using a calibration standard which replaces the transmitter coil arrangement and/or of the receiver coil arrangement. | 11-25-2010 |
20110001485 | ENERGY MANAGEMENT FOR AN ELECTRONIC DEVICE - Energy management of an electronic device using multiple electric power sources. The electric power sources may include a parasitic electric power source, a rechargeable electric power source, an intermittent electric power source, and a continuous electric power source. The electronic device further may include a power supply for receiving the electric power from the source(s) and supplying electric power to the various components of the electronic device that require power. The electronic device may include a source selector for controlling which power source supplies electric power to the power supply. Energy management of the electronic device may be configured to use a permanently exhaustible power source such as a battery only when other power sources are unavailable. | 01-06-2011 |
20110037478 | FIELD DEVICE - Disclosed is a field device which determines whether or not an abnormality which was detected is the type of abnormality which may not allow the output of a burn-out H signal, and sets a signal output for the abnormality to a burn-out L signal when the type of abnormality was one which may not allow the output of a burn-out H signal. For example, an abnormality in the D/A converter or the power supply. Therefore, a burn-out L signal is always output for an abnormality judged likely not to be able to output a burn-out H signal, and the certainty of reporting an abnormality when burn-out H is set is enhanced. | 02-17-2011 |
20110074436 | IDENTIFICATION OF FALSE POSITIVES IN HIGH IMPEDANCE FAULT DETECTION - A method, system and computer program product are disclosed for identifying false positive indications of high impedance faults in an AC electric power transmission and distribution network. In one embodiment, the method comprises using a procedure to monitor a phase conductor of the network for faults, said procedure generating a fault signal indicating a specified fault in the conductor. In this embodiment, the voltage and current waveform of the electric power conducted through the conductor are monitored. When a phase shift in said waveform is detected over a defined period of time, and said detected phase shift meets one or more given criteria, a correction signal is generated indicating that said fault signal is a false indication of the specified fault. The given criteria may include, for example, that the phase shift is more than a threshold value for a specified period of time. | 03-31-2011 |
20110175617 | Electric Machine Fast Transient Condition Detection - During a transient operating condition in an electric machine, a diagnostic routine associated with the electric machine may erroneously indicate a fault. According to the disclosure, a flag is set when a transient condition is detected. The flag is communicated to the diagnostic routine. The output of the diagnostic routine may be altered when the flag is set, i.e., when a transient is detected. | 07-21-2011 |
20110316553 | ABNORMALITY DETECTION SYSTEM - The abnormality detection system is provided for detecting an abnormality of an object. The abnormality detection system includes a high-frequency power source, a primary coil, a secondary coil and a controller. The high-frequency power source supplies power. The primary coil receives the power supplied from the high-frequency power source. The secondary coil is mounted to the object in noncontact with the primary coil for receiving power supplied from the primary coil. The controller is operable to detect the power received by the secondary coil and also to determine whether or not an abnormality is present in the object based on the detected power. | 12-29-2011 |
20120176141 | SIGNAL INPUT CIRCUIT AND INTEGRATED CIRCUIT - A signal input circuit includes: a signal input device having a signal input terminal; an inspection capacitor connected between the signal input terminal and a reference potential; a connection unit connecting/disconnecting an inspection path between the inspection capacitor and the signal input terminal; a charge and discharge unit charging/discharging the inspection capacitor; and a determination processing unit carrying out a terminal failure detection processing. The determination processing unit controls the connection unit to disconnect the inspection path and controls the charge and discharge unit to set the voltage of the inspection capacitor to a terminal inspection voltage in a charge and discharge procedure, controls the connection unit to connect the inspection path in a continuity establishing procedure, and detects the terminal failure at the signal input terminal or a communication path from the signal input terminal based on a voltage of the inspection path. | 07-12-2012 |
20120223719 | FAULT DETECTION DEVICE, ELECTRICAL INSTRUMENT AND FAULT DETECTION METHOD - A fault detection device includes an interface electrically connected to an electrical instrument to transfer commercial power to the electrical instrument, transmit a command for driving one of a plurality of loads included in the electrical instrument to the electrical instrument, and detect current flowing in one of the plurality of loads of the electrical instrument; and a terminal configured to receive a current signal corresponding to the current flowing in one of the plurality of loads from the interface, determine whether the one load has a fault on the basis of the received current signal and display whether the load has a fault. A faulty load is determined by detecting current of only a load suspected to have a fault when a fault is generated in the electrical instrument so as to improve fault detection accuracy. | 09-06-2012 |
20120319696 | DEVICE HAVING CAPACITIVE LOADS AND ABNORMALITY DETECTING METHOD THEREOF - In a device having capacitive loads in which a plurality of capacitive loads are connected in parallel, power is supplied from an AC power source to a load group comprising the plurality of capacitive loads, the load group is divided into a plurality of small load groups, and a current detecting sensor for detecting a current which flows in at least one small load group at a side which is closer to the load side than a branch point at which the load group is divided into the plurality of small load groups and a current abnormality detecting part for determining an abnormality of a load by a current detecting signal which is detected by the current detecting sensor are equipped. | 12-20-2012 |
20130314096 | Photovoltaic Array Systems, Methods, and Devices with Bidirectional Converter - Devices, systems and methods for operating, monitoring and diagnosing photovoltaic arrays used for solar energy collection. The system preferably includes capabilities for monitoring or diagnosing an array, under some circumstances, by using a bidirectional power converter not only to convert the DC output of the array to output power under some conditions, but also, for diagnostic operations, applying a back-converted DC voltage to the array. | 11-28-2013 |