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7570045 |
Attachment device and method for fastening electrical cable monitoring instruments to electrical cables
The present invention is an attachment device and a method for fastening and removing an electrical cable monitoring instrument to an electrical cable. The attachment device comprises monitoring...
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7486081 |
Apparatus and method for monitoring and controlling detection of stray voltage anomalies
A mobile apparatus for monitoring an electric field in a patrolled area, comprising at least one detection device for measuring electric field signals, at least one camera device for collecting...
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7482799 |
High-voltage detecting circuit for saving power in standby mode
A high-voltage detecting circuit for saving power in a standby mode is provided. The high-voltage detecting circuit includes a high-voltage detecting module, a switch module and a control module....
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7471075 |
Multi-test Arc fault circuit interrupter tester
A testing system includes a hand-held transmitter that plugs into a receptacle electrically coupled to a selected branch circuit. The transmitter includes a circuit effective to test an arc fault...
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7459901 |
Voltage presence indication device and electrical apparatus comprising such an indicator
The voltage presence indication device comprises a collector electrode ( 2 ) designed to have at least one capacitive connection ( 5 ) with an electrical ground ( 6 ) or a capacitive connection ( 3...
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7449875 |
Device for automatic detection of battery polarity
The present invention provides a device for automatic detection of battery polarity, wherein a detector circuit is structured from detector terminals, detector units, positive voltage electrical...
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7446549 |
Semiconductor leakage current detector and leakage current measurement method, semiconductor leakage current detector with voltage trimming function and reference voltage trimming method, and semiconductor integrated circuit thereof
A semiconductor leakage current detector of the present invention includes a first analog switch which causes a current to be measured to flow or to be cut off, a second analog switch which causes...
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7402992 |
Circuit component tester
A circuit component tester includes a portable casing and a circuit provided within the casing. A plurality of leads are provided to electrically connect the circuit to a gate and two terminals of...
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7382272 |
System, a tool and method for communicating with a faulted circuit indicator using a remote display
Provided is a system, a tool and a method for communicating with a faulted circuit indicator (FCI), the faulted circuit indicator including a detection circuit for monitoring an electrical...
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7315169 |
Microprocessor controlled fault indicator having inrush restraint circuit
A fault indicator for indicating the occurrence of a fault in an electrical conductor has a housing, a high capacity battery, at least one light emitting diode (LED) visible from the exterior of...
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7310049 |
Status indicator
A status indicator indicates an operating state, including an electrical malfunction, of an electrical load that is located and controlled from locations remote from a monitoring location.
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7253604 |
Assembled capacitor polarity automatic inspecting method and system
An assembled capacitor polarity automatic inspecting method and system is proposed, which is designed for use to perform an automatic inspecting procedure to check whether an array of polarized...
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7248056 |
Three-phase electrical receptacle tester
A three phase receptacle tester including a housing, an electrical connection and a coupling assembly. The housing includes an outer surface, an opening and an inner cavity, wherein the opening...
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7208932 |
Voltage detector
A voltage detector used to determine if an exposed or unexposed wire or terminal is “hot.” The voltage detector includes a low density EMF field detecting circuit and a high density EMF field...
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7199571 |
Probe apparatus for use in a separable connector, and systems including same
A probe apparatus disclosed for use in a separable connector includes an insulating body and spaced apart first and second electrical conductors in contact with the insulating body. The first and...
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7151462 |
Circuit arrangement and method for load diagnosis of a semiconductor switch
The present invention relates to a circuit arrangement and a method for load diagnosis of a switch having a first and a second load connecting terminal. A first and a second current source...
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7129693 |
Modular voltage sensor
A voltage sensor is described that consists of a plurality of identical series-connected sections, where each section is comprised of an arrangement of impedance elements. The sensor is optimized...
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7113102 |
System having a screen and an external power supply unit
A system having a screen, in particular a flat screen, and having an external power supply unit that can be connected by a plug connector to the screen in order to supply the screen with a DC...
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7106048 |
Fault indicator with auto-configuration for overhead or underground application
A fault indicator for indicating the occurrence of a fault in an electrical conductor is automatically configured for an overhead application or for an underground application. The fault indicator...
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7096155 |
Method, system and apparatus for providing real-time led status of embedded controllers to system management software
Embedded controller(s) in an information handling system have real-time status and activities represented by indicators, such as light emitting diodes (LEDs), associated with the embedded...
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7068038 |
240 volt outlet tester
A 240 volt outlet tester is described. The 240 volt outlet tester includes a housing with three or four prongs extending outwardly from a base of the housing. The prongs are designed so that they...
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7056072 |
Method and apparatus for controlling movement of cutting blade and workpiece
A method of controlling a relative movement of a cutting blade and a workpiece which are moved relative to each other by a movement device in an operation with a machine tool. The method includes a...
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7034517 |
Multimeter with filtered measurement mode
A multimeter with a filtered measurement mode. By pressing a single button or key, a low-pass filter is switched into the signal path to filter voltage spikes, noise, and switching transients from...
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6977493 |
Electrical power probe for testing and supplying power to electrical wiring and devices
An electrical power probe is provided. In one aspect, an electrical power probe includes a power probe control unit adapted to connect to a direct current (DC) power source and receive an input...
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6963197 |
Targeted timed reset fault indicator
A fault indicator for indicating the occurrence of a fault in an electrical conductor is reset at a predetermined time after the fault is detected, such as about 4 hours. The fault indicator has a...
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6949921 |
Auto-calibration of multiple trip settings in a fault indicator
A fault indicator for indicating the occurrence of a fault in an electrical conductor has a plurality of trip settings, such as in the range of 50 A to 1200 A, that is automatically calibrated. The...
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6940416 |
Low voltage testing and illuminating device
This invention relates to a limited range low voltage testing, regulating, and indicating device comprising a detector and low voltage measurer of magnitude in a switch-regulated power supply...
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6888341 |
Dual voltage circuit tester
A handheld dual voltage circuit tester, method and electronic circuit that quickly allows a technician to determine whether an automotive electrical system runs on a 12-14 volt circuit or 36-42...
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6878877 |
Adjustable electrical outlet box assembly
The present invention is directed to an adjustable electrical outlet box assembly comprising an outlet box, an electrical outlet assembly, and an adaptor. The adaptor is located between the box and...
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6859040 |
Voltage detecting circuit
There is provided a voltage detecting circuit in which a consumed electric current is small, accuracy is high, and an erroneous operation seldom occurs. In the voltage detecting circuit constituted...
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6850074 |
System and method for island detection
A system and method is provided for detecting an island condition using active detection. The active detection involves biasing the voltage, frequency, current or phase of a distributed resource...
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6844712 |
Multi-test circuit breaker locator having a transmitter and a receiver
A system for locating a circuit interrupter associated with a selected branch circuit. The system includes a passive transmitter that creates a current spike at a predetermined frequency and a...
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6828814 |
Circuit configuration and display element
A circuit configuration has an integrated semiconductor element, preferably, an intelligent power semiconductor, and a display element. A display element diagnoses and displays disturbances in the...
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6737871 |
Non-invasive cable tester
The present invention is a non-invasive cable tester. The cable tester comprises a sensor for detecting an electric field emitted by a live electric cable. The resulting signal from the sensor is...
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6734662 |
Microprocessor controlled fault indicator having led fault indication circuit with battery conservation mode
A fault indicator for indicating the occurrence of a fault in an electrical conductor has a housing, a high capacity battery, at least one light emitting diode (LED) visible from the exterior of...
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6731217 |
Electrical circuit tester
An electrical circuit tester for allowing a user to efficiently test electrical fixtures and switches. The electrical circuit tester includes a housing that has a plurality of prongs that extend...
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6657435 |
Audible circuit breaker
An audible test circuit has a body having a plurality of prongs extending therefrom and having a plurality of lights thereon. A four way bridge rectifier circuit has a voltage steering circuit for...
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6603302 |
Circuit testers
A circuit tester ( 1 ) for testing circuit integrity in a series-wired string of Christmas fairy lights powered by domestic mains electricity. The tester comprises or includes a housing; a probe...
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6577116 |
Circuit test light
A circuit test light includes a reel-shaped housing formed of a light-transmitting material, with a light source disposed in the hub of the reel and connected to the proximal ends of two elongated...
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6538422 |
Voltage sensor bushing assembly with integral capacitance screen
A voltage sensing apparatus includes an output for a voltage tap point that is useful in representing the voltage on a conductor that passes through the voltage sensing apparatus. The voltage...
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6531860 |
Integrated power detector with temperature compensation
A power detector ( 50 ) detects a power level of an amplified signal (S 20 ) produced by a power amplifier ( 16 ) on the same integrated circuit ( 100 ). The power detector compensates for an...
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6512361 |
14/42-volt automotive circuit tester
A circuit tester for both 14-volt and 42-volt automotive electrical systems includes a housing with a probe tip at one end and a ground connector at the other end. A battery-powered voltage...
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6507970 |
Electrical connection brush and tester assembly
An electrical connection brush and tester assembly for cleaning electrical contacts to facilitate the flow of electrical current and verify the presence of a voltage at a specified contact. The...
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6489778 |
Fault current recognition in control units
A method of reconizing a fault current in a control unit and to a control unit having a circuit for recognizing the fault current. According to the invention, a current flowing into the control...
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6479981 |
Remote light indication fault indicator with a timed reset circuit and a manual reset circuit
A fault indicator contained within a protective equipment closure of the type used to house pad-mounted components of a power distribution system detects the occurrence of a fault current in a...
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6448779 |
Wiring test assembly
A wiring test assembly for validating and troubleshooting electrical problems with vehicle wiring assemblies for trailers. The wiring test assembly includes a housing with a bottom portion hingedly...
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6433698 |
Fault indicator providing light indication on fault detection
A fault indicator for detecting the occurrence of a fault current in a monitored conductor and providing a light indication thereof includes a rotatably mounted indicator flag. The flag is...
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6433530 |
Hand held circuit and polarity tester
A circuit testing device includes a handle with a hollow interior, a conductive probe projecting from one end and a removable cap with a wire and clamp projecting from the opposite end A...
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6424136 |
Current indicator for fault assessments of loop circuit integrity while providing circuit isolation
A current detector/indicator for DC has a transistor ( 1 ) and an LED ( 2 ). They are arranged so that current flow through the LED causes the transistor to conduct, shunting excess current away...
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6411073 |
Method and device for locating a metal line
A line locating device and method that is capable of determining the location of a line even when a significant amount of transmitted signal is coupled to neighboring lines. A device according to...
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