Matches 1 - 32 out of 32


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US20130099776 WIRELESS CHARGING INTENSITY INDICATION METHOD AND CHARGED DEVICE  
The present invention discloses a wireless charging intensity indication method, including: obtaining, by a charged device, wireless charging intensity of the charged device at a present charging...
US20080042638 Connector with AC/DC Test LEDs  
A connector with AC/DC test LEDs is formed of a pair of different colored LEDs connected in parallel to each other in a test and alarm circuit which is connected to a power source. One LED is...
US20090160425 Multi-Test 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...
US20090189597 INSTRUMENT FOR TESTING AN ELECTRICAL CIRCUIT  
An instrument for testing an electrical circuit includes a housing, a printed circuit board disposed within the housing, and at least one probe in electrical communication with the printed circuit...
US20110074398 METHODS AND SYTEMS TO DETECT VOLTAGE CHANGES WITHIN INTEGRATED CIRCUITS  
Methods and systems to detect droop events on-chip, which may include a sensor circuit located adjacent to a voltage node to convert a corresponding voltage to a digital count or value indicative...
US20070200590 Saturation detection circuits  
This invention generally relates to saturation detection circuits, in embodiments for substantially lossless detection of saturation of power switches in power integrated circuits. We describe a...
US20120112775 Detection of the Conduction State of an RC-IGBT  
A circuit arrangement includes: a reverse conducting IGBT configured to allow for conducting a load current in a forward direction and in a reverse direction, the IGBT having a load current path...
US20090021240 CIRCUIT TESTER/JUMPER  
A device which may be utilized as a circuit testing device or a power source conductor device includes a handle with a single lead wire electrically connected to a light in series circuit with a...
US20080258710 Analysis of Liquid Chromatography Eluates  
When analysing saccharides by HPAEC, the eluate from the column is typically analysed using a amperometric detector. According to the invention, amperometric detection is coupled with ultraviolet...
US20150022185 POWER RECEIVING DEVICE AND PROGRAM  
There is provided a power receiving device including a connecting unit that is connected to a power line through which power is transmitted, a determining unit that determines whether transmitted...
US20150130442 DC REVERSE POLARITY DETECTION  
For inspecting polarities of poles of DC voltage sources, each pole being individually connected to one of separate input terminals of a combiner circuit, an inspection apparatus includes electric...
US20090045802 Polarity tester for an electronic communication port  
A polarity tester is engagable with an electronic communication port to test the polarity thereof. A connector is supported on a housing and features a plurality of electrical contacts for...
US20090251308 THREE-PHASE FAULTED CIRCUIT INDICATOR  
A three-phase faulted circuit indicator adjustable to accommodate a variety of three-phase power cables is disclosed. In one embodiment, faulted circuit indicator comprises a flexible holder that...
US20050225311 Binary voltage indicator  
The invention is concerned with a binary voltage indicator for use with high- or medium voltage equipment. The indicator comprises a photoactive layer (5) which changes its reflectivity or...
US20080198277 Indicator of Presence of Ac Voltage  
The subject of the invention is an indicator of presence of AC voltage in medium or high voltage conductors and/or conducting elements of transmission and distribution systems, whose basic AC...
US20100315067 Power Network Sensor Devices and Related Methods  
An operation detection device for an overcurrent protection component that detects a transition event between a closed state and an open state of the protection component includes an event sensor...
US20140043016 SYSTEM INCLUDING A MAGNETOELECTRIC DEVICE FOR POWERING A LOAD OR VISUALLY INDICATING AN ENERGIZED POWER BUS  
A system includes a power bus, a capacitive divider and a magnetoelectric device. The capacitive divider includes a first capacitance element electrically connected in series with a second...
US20080042639 Safe input circuit with one-channel peripheral connection for the input of a bus participant  
The invention relates to an input circuit for an input component for the safe reading of input signals applied to the input component. The problem of the invention is to provide a circuit for...
US20080054882 Self-test probe design & method for non-contact voltage detectors  
A non-contact voltage detector having a self-test feature is provided. The non-contact voltage detector may include an antenna, a detection circuit and a self-test circuit. The self-test circuit...
US20140292308 DETECTION CIRCUIT AND DETECTION METHOD  
A detection circuit (1) comprises a first and a second contact terminal (P1, P2) for connecting a microphone (HM) with a defined polarity. Furthermore, a first and a second switch (S1, S2) are...
US20090121739 AC DETECTING APPARATUS FOR DETECTING OPERATING STATES OF AC POWER SUPPLY  
An exemplary AC detecting apparatus for detecting operating states of an AC power supply includes a detecting circuit connected to an AC power supply, the detecting circuit comprising a...
US20110050209 METHOD AND APPARATUS FOR UNAMBIGUOUS DETERMINATION OF THE ROTOR POSITION OF AN ELECTRICAL MACHINE  
The method for operating an electrical machine (32) having three phases (A, B, C) and a connection associated with each of the phases (A, B, C) for determining the rotor position (φ), including...
US20150042314 FLOW DIRECTION DETECTION DEVICE, FLOW DIRECTION DETECTION METHOD, AND FLOW DIRECTION DETECTION PROGRAM  
A detection apparatus that detects a state of power has a first current transformer that measures a first current on a side of a first power line with respect to a connecting point between the...
US20110133943 CONNECTION CONFIRMATION SYSTEM AND MAIN BODY DEVICE  
An electrical connection confirmation system includes a cartridge type HDD 200 and a storage device main body 100 into which the cartridge type HDD 200 is inserted. The cartridge type HDD 200...
US20130021019 Device and method for detecting a polarity reversal on a low voltage side of a dc voltage transformer in a dual-voltage vehicle electrical system  
A device and a method for detecting a polarity reversal on a low voltage side of a DC voltage transformer in a dual-voltage vehicle electrical system, particularly in a motor vehicle. A current...
US20140145708 DETECTING CIRCUIT AND RELATED CIRCUIT DETECTING METHOD  
A detecting circuit includes: a testing signal generator, arranged to selectively generate a testing signal having a first signal edge or a second signal edge to a connecting port; and a detector,...
US20140306691 Circuit That Deciphers Between AC And DC Input Signals  
Aspects of the present invention provide a module including an electronic circuit that flags the presence of AC or DC input signals. An AC filter receives an input signal and couples it to a first...
US20170082664 DC VOLTAGE DETECTOR  
A DC voltage detector, which is configured to detect the presence or absence of a DC voltage in a detection target (21) through bringing a detection electrode (11) provided inside a housing (23)...
US20160305986 Device for Detecting and Measuring the Current and Voltage of Electric Circuits in a Building  
Disclosed is a device for measuring the current and voltage of electric circuits in a building. The device has a speaker that is detachable from the housing of the device, a receiver that can use...
US20160167610 METHOD AND DEVICE FOR IDENTIFYING A POLARITY OF A FREEWHEELING DIODE, ACTUATOR CIRCUIT AND SAFETY DEVICE FOR A VEHICLE  
A method for identifying a polarity of a freewheeling diode interconnected in parallel to an inductive actuator for a safety unit for a vehicle. The method includes applying a test current to a...
US20160084897 METHOD AND CIRCUIT FOR ASSESSING PULSE-WIDTH-MODULATED SIGNALS  
A method of assessing a pulse-width-modulated signal in which the pulse-width-modulated signal to be assessed is applied to a first input of a microcontroller and a signal, that depends on the...
US20150301090 Electric Circuit Isolator/Tester  
Disclosed is a device that uses a circuit board to isolate and test electrical circuits so as to generate an audible signal when electric current is flowing through the circuit but is quiet when...

Matches 1 - 32 out of 32