Abstract: A mixed-signal integrated circuit includes an analog circuit comprising at least one digital block embedded in the analog circuit, the at least one digital block comprising a plurality of functional bits and a plurality of configuration bits, the plurality of functional bits providing for a functionality of the analog circuit according to a designed functionality and the plurality of configuration bits being usable for configuring a plurality of operational modes of the analog circuit; and a digital circuit comprising a scan chain configured to scan at least part of the functional bits of the digital block embedded in the analog circuit with respect to the designed functionality, wherein the scan chain is further configured to set at least part of the configuration bits of the digital block embedded in the analog circuit according to a selected operational mode of the plurality of operational modes of the analog circuit.

Abstract: A method for detecting an electrical leakage includes acquiring a voltage of a source of the electrical leakage detected by a voltage detector of a shoe when a walking user is wearing the shoe on a wet ground, and acquiring electromagnetic field strength between the source of the electrical leakage and the shoe, by a first induced circuit of the shoe. A distance between the shoe and the source of the electrical leakage is acquired and the voltage and distance sent to a mobile device as representing a danger when the voltage of the source of the electrical leakage is greater than the predetermined voltage.

Abstract: A technology for propagating themes is provided. In one example, a method may include identifying media having a content feature contained in a presentation of the media. The method may include extracting the content feature of the media as a continuous variable and discretizing the continuous variable into a bucket representing a discrete value. A theme label may be applied to the media and may be propagated to other media with continuous variables discretized into the subset of buckets.

Abstract: Devices and methods for multilayer packages, antenna array feeds, test interface units, connectors, contactors, and large format substrates. The device comprising a 3D coaxial distribution network structure including a plurality of coaxial transmission lines separated by a first pitch at the input and a second, wider pitch at the output thereof.

Abstract: Systems and methods for detecting thermal-mechanical strain fatigue in an electrical fuse include a controller configured to monitor at least one fuse fatigue parameter over a period of time while the fuse is connected to an energized electrical power system, and based on the monitored at least one fuse fatigue parameter, the controller is further configured to determine at least one of a consumed service life of the fuse element or a service life remaining of the fuse element.

Abstract: A method and a corresponding device are provided for recognizing a faulty quiescent current behavior of a vehicle, in particular for identifying a quiescent current threshold value for an electrical on-board network of a vehicle. The method includes the identifying of a plurality of quiescent current data sets of a corresponding plurality of vehicles. A quiescent current data set of a vehicle includes a quiescent current measured value of the vehicle and a value for one or a plurality of vehicle parameters of the vehicle. The method furthermore includes the identifying of a plurality of classes via cluster analysis of the plurality of quiescent current data sets. A class includes a vehicle group which is described by one or a plurality of values for one or a plurality of vehicle parameters, and a class-quiescent current for the vehicle group. The method determines a quiescent current threshold value based on at least one of the class-quiescent currents of the plurality of classes.

Abstract: In a particular illustrative embodiment of the present invention, an inter-island power transmission system is disclosed. An electronic box is placed on each end of a medium voltage three phase power cable running between two islands. The electronic box senses an open cable on the three phase cable and switches to direct current power transmission on the remaining two good cables. The direct current power is converted back to three phase power transmission on the receiving end of the direct current power.

Abstract: A method for adjusting brightness includes detecting whether damage occurs on a light guide plate of the display device, determining a damage position and a damage extent of the light guide plate when the damage occurs on the light guide plate, and compensating for a change value of brightness generated due to the damage by adjusting the brightness of the display device corresponding to the damage position, according to a predetermined correspondence between damage extents and change values of brightness. The method for testing a display device includes applying a destructive operation to the display device to be tested, detecting a damage extent generated by the destructive operation and a change value of brightness correspondingly generated in a damage region, and creating and storing a correspondence between the damage extent and the change value of brightness.

Abstract: A display device including pixels, a pad area, auto-probe test wires (AP wires), and switching transistors is discussed according to an embodiment. The pixels are located in a display area of a lower substrate. The pad area is located in a non-display area of the lower substrate. The non-display area is located outside the display area in which the pixels, gate lines connected to the pixels, data lines connected to touch sensors, and sensor lines connected to the touch sensors are placed. The AP wires are located in the non-display area and connected to the display area. The switching transistors are located in the non-display area, between one side and the other side of the AP wires.

Abstract: The disclosed technology provides a storage device enclosure system, which includes two hard disk drives (HDDs), a form factor compatible connector, the form factor compatible connector attached to the two HDDs and configured to connect the two HDDs to an external computing system, and a controller, the controller located on the form factor compatible connector and configured to performing data mirroring of data from the external computing system via a SATA port multiplier onto the two HDDs.

Abstract: A method of testing an integrated circuit device, which involves receiving, by a processor, a test definition indicating a sequence of acts to be performed by an automated test equipment in testing an integrated circuit device. The test definition includes indications of test cycles and timings of events in the cycles.

Abstract: A current flows between the drains of FETs, which function as a switch. A first constant current circuit causes a constant current to flow from the FET side of a resistor to the other side thereof. A first comparator outputs a high level voltage to the control section if the electric potential at the drain of the FET is higher than the electric potential at one end, on the first constant current circuit side, of the resistor. Furthermore, the first comparator outputs a low level voltage to the control section if the electric potential at the drain of the FET is lower than the electric potential at one end, on the first constant current circuit side, of the resistor. The control section turns the FETs off when the first comparator outputs the low level voltage. Furthermore, the control section changes the current that is caused to flow through the resistor by the first constant current circuit.

Abstract: An audio playing system has a first channel output device, a first audio modulator and a controller. The first audio modulator is electrically coupled to the first channel output device and having a set of first modulation parameters, the first audio modulator configured to selectively modulate a first channel audio signal with the set of first modulation parameters and output the modulated first channel audio signal to the first channel output device. The controller is electrically coupled to the first channel output device and the first audio modulator, wherein in a test mode, the controller is configured to send a set of test audio signals to the first channel output device, to generate a set of first user parameters based on a plurality of pieces of first confirmation signal, and to adjust the set of first modulation parameters based on the set of first user parameters.

Abstract: Implementations of integrated circuits may include: one or more diodes each having an anode and a cathode, each of the one or more diodes may be coupled with a voltage domain. One or more test pins may be coupled with one or more diodes. The test pins may be configured to be coupled to a tester. The one or more diodes may be positioned on one or more internal analog nodes to detect the presence of one or more analog faults. The one or more diodes may be configured to remain inactive during regular operation of the integrated circuit.

Abstract: A method for determining soot in exhaust gases of burners or internal combustion engines with the aid of a sensor element which includes at least two measuring electrodes exposed to the exhaust gas and one heating element, a voltage being applied to the at least two measuring electrodes during a measuring phase and the current flow or electrical resistance occurring between the measuring electrodes being determined and output as a measure for the particle concentration or the particle mass flow, characterized in that during the measuring phase, the temperature of the sensor element is monitored and the sensor element is heated by the heating element, if the temperature of the sensor element falls below a limiting temperature.

Abstract: Disclosed are systems, devices and methods related to miniature probes that can be utilized for electrical and/or magnetic field strength measurements for areas that are smaller than an area of a radio-frequency (RF) module. In some embodiments, an electrical probe can be configured to include an unshielded inner conductor at an end of a coaxial assembly to allow an electrical field to induce differential-mode currents in the coaxial assembly. In some embodiments, a magnetic probe can be configured to include a loop connected to inner and outer conductors of a coaxial assembly to induce a common mode current by a change in magnetic field flux through the loop. In some implementations, such probes can be utilized to obtain near-field measurements to facilitate applications such as electromagnetic (EM) shielding designs.

Abstract: A method for performing static timing analysis of an integrated circuit design, wherein at least two timing paths share a shared node comprises propagating along the at least two timing paths a plurality of timing signals characterized by a set of timing parameters and determining respective values of the timing parameters at the shared node. Subsets of timing signals are defined based on relations between the determined parameter values of different timing signals. For each of the subsets representative parameter values are identified and a merged timing signal is propagated from the shared node at least partially along the at least two timing paths. Therein the merged timing signal has at the shared node the representative parameter values of the subset. The method also comprises generating timing data based on the merged timing signals and storing the timing data.

Abstract: A multi-zone gas distribution plate (GDP) for high uniformity in plasma-based etching is provided. A housing defines a process chamber and comprises a gas inlet configured to receive a process gas. A GDP is arranged in the process chamber and is configured to distribute the process gas within the process chamber. The GDP comprises a plurality of holes extending through the GDP, and further comprises a plurality of zones into which the holes are grouped. The zones comprise a first zone and a second zone. Holes of the first zone share a first cross-sectional profile and holes of the second zone share a second cross-sectional profile different than the first cross-sectional profile. A method for designing the multi-zone GDP is also provided.

Abstract: Mechanisms are provided for evaluating test cases for testing a software product based on a requirements change. The mechanisms analyze a test case corpus to identify a plurality of first relationships between elements of test cases in the test case corpus and generate a test case relationship model based on the identified plurality of first relationships. The mechanisms receive a proposed requirements change to change one or more requirements of the software product and then perform a search of the test case relationship model to identify test case relationships corresponding to the proposed requirements change. The mechanisms identify a subset of test cases affected by the proposed requirements change and generate an output specifying the identified subset of test cases.

Abstract: An electrical meter and methods of use and operation are disclosed. The electrical meter includes a housing and an electrical interface including a plurality of electrical connections having a predetermined physical layout. The meter further includes a plurality of voltage measurement elements within the housing, each of the plurality of voltage measurement elements connected to at least one of the plurality of electrical connections, and an electrical metering circuit within the housing and configured to detect power consumption based at least in part on monitoring a voltage at each of the plurality of voltage measurement elements. The meter also includes a power supply electrically connected to the electrical metering circuit, the power supply supplying power to one or more circuits of the electrical meter. The meter further includes a low voltage electrical connection dedicated to the power supply and from an electrical service to which the electrical meter is connected.

Abstract: Disclosed is a method for manufacturing an electrochemical cell, wherein an insulation failure product can be accurately rejected, and an electrochemical cell can be used again after the insulation failure inspection. In the method for manufacturing the electrochemical cell (1), which is configured by hermetically housing an electrochemical cell main body (20) such that the leading end of a metal terminal (21) protrudes to the outside of the outer housing (10), an impulse voltage is applied between the metal terminal (21) and a metal foil layer (12), the waveform of the voltage applied to the capacitance between the metal terminal (21) and the metal foil layer (12) is measured, and the insulation failure inspection step is performed.

Abstract: A liquid crystal display and a test circuit thereof are provided. The test circuit has a plurality of signal pads, a first data distributor, a plurality of logic circuit units and N switches. N is a positive integer. The signal pads are configured to receive a test data signal, a voltage signal, an enable signal and a plurality of first switch control signals. The first data distributor distributes the test data signal to N output terminals of the first data distributor. Each of the logic circuit units generates a second switch control signal according to the voltage signal, the enable signal and a corresponding one of the first switch control signals. Each of the switches controls the electrical connection between an output terminal of the first data distributor coupled thereto and at least a data line coupled thereto.

Abstract: A fault analysis method comprises: receiving fault data from wafer level testing that identifies locations and test results of a plurality of die; applying a kernel transform to the fault data to produce cluster data, where the kernel transform defines a fault impact distribution that defines fault contribution from the failed die to local die within an outer radial boundary of the fault impact distribution. Applying the kernel transform comprises: centering the fault impact distribution at a location of each die that failed wafer level testing, associating each local die that falls within the outer radial boundary with a respective fault contribution value according to the fault impact distribution, and accruing fault contribution values associated with each respective die of the plurality of die to produce a cluster value for the respective die, which correlates to a probability of failure of the respective die at a future time.

Abstract: A faulted circuit indicator includes a microprocessor or discrete logic to determine a fault condition and initiate one or more fault indications, a super capacitor, a battery, and power supply circuitry for providing power to the microprocessor and one or more fault indicators. The power supply circuitry: inductively receives energy from a power line; determines whether an induced voltage is sufficient to power one or more functions of the FCI device; and if not, determines whether available voltage from the super capacitor is sufficient to power the one or more functions of the FCI device. If so, the power supply circuitry draws voltage from the super capacitor and, if not, the power supply circuitry draws voltage from the battery when it is determined that the available voltage from the super capacitor is not sufficient to power the one or more functions of the FCI device.

Abstract: A testing method for a smart wristband and a testing system thereof are provided. The Bluetooth function of the smart wristband is put into a sleep state through presetting of the system software before the test, and the testing method comprises the following steps of: carrying out electrical connection operations on the smart wristband under test during the test so that the Bluetooth function of the smart wristband is activated; completing pairing between the smart wristband and the testing apparatus, and synchronously displaying a corresponding function of the smart wristband on a screen of the testing apparatus so as to be tested, wherein the testing apparatus is a smartphone, and the testing of the corresponding function includes at least one of Bluetooth power testing, writing of the mainboard serial number, charging testing and motor vibration controlling.

Abstract: This document relates to continuity monitoring of electrical conductors. For example, materials and methods for continuity monitoring of conductors for use providing power to a blood pump (e.g., an assist device) are provided.

Abstract: A computer provides a graphical user interface for displaying a virtual representation of a voltage regulator and for accepting a user requirement for the voltage regulator. The computer automatically determines an internal calibration setting of the voltage regulator that meets the user requirement. The computer simulates operation of the voltage regulator as calibrated with the internal calibration setting. The internal calibration setting is downloaded to the voltage regulator. A calibration controller of the voltage regulator receives the internal calibration setting and outputs digital calibration bits in accordance with the internal calibration setting. The digital calibration bits works in conjunction with interface circuits to adjust circuits of a voltage regulator core to digitally calibrate the voltage regulator.

Abstract: Example embodiments provide systems and methods for a vehicle component structural integrity assessment system, comprising a first connection and a second connection coupled to a conduction path, which is associated with a vehicle component. The conduction path has an initial resistance. A controller is configured to transmit a signal upon the detection of a change in the resistance of the conduction path from the initial resistance.

Abstract: Example apparatus and methods to remove power from a field device are disclosed. An example apparatus includes a first switch to control power to the field device, and a second switch comprising a first gate and a second gate. The second gate is electrically coupled in parallel to the first gate, and the second switch is electrically coupled in series to the first switch. The example apparatus also includes a first diagnostics controller to control the first and second gates, a first processor to control the first switch, a third switch to control power to the field device, and a fourth switch comprising a third gate and a fourth gate. The fourth gate is electrically coupled in parallel to the third gate, and the fourth switch is electrically coupled in series to the third switch. The example apparatus also includes a second processor to control the third switch, and a second diagnostics controller to control the third and fourth gates.

Abstract: A data transfer dongle for transferring electronic information from an existing specific vehicle module to a predetermined specific vehicle module. The dongle collects and stores data specific to a module or component in the original format and enables that original data to be written or uploaded to a repaired or new module or component. Preferably, the dongle is programmed for limited use and will disable itself after a successful data transfer to the module or component.

Abstract: This application discloses a design verification tool to simulate a circuit design with a test bench to generate a simulated output for the circuit design and a simulation log corresponding to operation of the test bench during the simulation of the circuit design. The design verification tool can determine whether the simulated output for the circuit design is different than an expected output for the circuit design. A debug tool can synchronize the simulated output for the circuit design with test bench transactions from the simulation log that prompted the generation of the simulated output for the circuit design when the simulated output of the circuit design is different than the expected output of the circuit design.

Abstract: An apparatus includes an upstream/downstream probability module that determines, for each measurement point in an electrical power system, an upstream/downstream probability. The apparatus includes a zone module that identifies a plurality of zones within the power system and an upstream/downstream module that identifies, for each measurement point and for each zone, if a power quality event in a zone is upstream or downstream of a measurement point. The apparatus includes a zone probability module that determines a zone probability for each zone by multiplying the upstream probability or the downstream probability for each measurement point. The zone probability is a probability that the event happened in a zone. The zone probability module uses the upstream probability of a measurement point when the zone is upstream of the measurement point and uses the downstream probability when the zone is downstream of the measurement point.

Abstract: An interface supply circuit includes a power supply unit, a control unit coupled to the power supply unit, and a detection unit coupled to the control unit. The detection unit is configured to couple to an interface. The detection unit is configured to output a first control signal upon detecting that a device is inserted into the interface and output a second control signal upon detecting that no device is inserted into the interface. The control unit is configured to be switched on upon receiving the first control signal. The power supply unit is configured to supply power to the interface in event that the control unit is switched on. The power supply unit is configured to be disconnected from the interface in event that the control unit receives the second control signal.

Abstract: Described herein are methods, systems, and apparatuses for determining sag in a signal. In one example, a method of tracking sag in a signal includes, when in an initial state, monitoring for when the signal transitions to a sag state based at least on an output of a tracking filter. In response to the signal transitioning to the sag state, increasing a bandwidth of the tracking filter and, when in the sag state, monitoring for when the signal transitions to a recovering state. The method further includes, in response to the signal transitioning to the recovering state, decreasing the bandwidth of the tracking filter.

Abstract: A rotor temperature detecting device in an electric motor of the present invention includes: a power calculator configured to calculate power of an electric motor; a rotational speed detector configured to detect rotational speed of the electric motor; a storage configured to store coefficients depending on the rotational speed; and, a rotor temperature estimator configured to estimate temperature of a rotor of the electric motor, based on the power and the coefficient.

Abstract: Provided is a switch control circuit for controlling a current control switch of a power supply, the power supply including a load, an inductor and the current control switch that are series-coupled to an input power. The switch control circuit includes a current measuring unit configured to measure a current flowing into the load, a current integral unit configured to integrate the measured current, a comparison unit configured to compare the integrated current value and a reference value and a control unit coupled to the current control switch, the control unit being configured to turn off the current control switch when the integrated current is substantially the same as the reference value and turn on the current control switch when a predefined off-time elapses from a time when the current control switch is turned off. The switch control circuit may quickly and accurately control an average current.

Abstract: Methods and apparatus relating to an adaptive termination scheme for a low power, high speed bus are described. In an embodiment, logic at least partially causes termination of a portion (e.g., one or more transmission lines) of an interconnect. The logic adaptively optimizes the number of lines that are to be terminated based on one or more operating conditions of the interconnect. Other embodiments are also disclosed.

Abstract: An interface supply circuit includes a power supply unit, a first and a second control circuit, and a detection unit coupled to an interface. The detection unit is configured to output a first control signal upon detecting a corresponding device is inserted into the interface and output a second control signal upon detecting no device is inserted into the interface. The first control circuit is configured to switch off in event receiving the first control signal and switch on in event receiving the second control signal. The second control circuit is configured to switch on in event the first control circuit is switched off and switch off in event the first control circuit is switched on. The power supply unit is configured to supply power to the interface after the second control circuit is switched on and be disconnected from the interface after the second control circuit is switched off.

Abstract: A display panel and a display device comprising a pixel area (A) and a peripheral wiring area, wherein detection switches are arranged between the pixel area (A) and the peripheral wiring area, the detection switches correspond to gate lines (11) and/or data lines (10) of the pixel area (A) one to one, and the detection switches are configured to control connection and disconnection of the pixel area (A) and the peripheral wiring area. In the display panel, it is possible to precisely and quickly detect whether there is a short-circuit or open-circuit defect and the precise position of the defect. It is only required to perform an inching detection on signal lines in a small area during the detection procedure, which saves detection time and improves detection efficiency.

Abstract: A system adapted for use with an electromagnetic transmitter and receiver system is provided comprising an electromagnetic transmitter and receiver system comprising an antenna, wherein the electromagnetic transmitter and receiver system is adapted to produce a transmitted signal for antenna pattern measurement which is transmitted through the antenna; a case located in proximity to the electromagnetic transmitter; at least one measurement probe disposed inside the case without changing the antenna's emission pattern, wherein the case, with the probe dispose therein, is placed no closer to the antenna than a limitation on the transmitter and receiver system component comprising a dynamic range associated with radio frequency energy received by the probe from the antenna; and an output section adapted to send results from the antenna pattern measurement received by the probe to a remote location away from the transmitter and receiver system for recording and analysis, the analysis comprising producing an anten

Abstract: Apparatus and methods for locating faults in inductively coupled wired drill pipe while drilling. In one embodiment, apparatus includes a drill string and a wired drill pipe fault monitor. The drill string includes a plurality of wired drill pipes. Each wired drill pipe includes an inductive coupler at each terminal end. The wired drill pipe fault monitor is coupled to the wired drill pipes. The fault monitor includes an impedance measuring system and a fault locator. The impedance measuring system is configured to measure, while drilling the borehole, an input impedance of the wired drill pipes. The fault locator is configured to determine a propagation constant for the wired drill pipes, and to analyze the measured input impedance and determine, as a function of the measured input impedance and the propagation constant, a location of a fault in the wired drill pipes.

Abstract: Systems for providing electro-mechanical sensors are provided. In some embodiments, a system for providing an electro-mechanical sensor comprising: a flexible material forming at least a first channel and a second channel, wherein the first channel includes a first plate region and the second channel forms a second plate region that is substantially aligned with the first plate region; and an electrically conductive fluid that fills the first channel and the second channel.

Abstract: A non-destructive method for chemical imaging with ˜1 nm to 10 ?m spatial resolution (depending on the type of heat source) without sample preparation and in a non-contact manner. In one embodiment, a sample undergoes photo-thermal heating using an IR laser and the resulting increase in thermal emissions is measured with either an IR detector or a laser probe having a visible laser reflected from the sample. In another embodiment, the infrared laser is replaced with a focused electron or ion source while the thermal emission is collected in the same manner as with the infrared heating. The achievable spatial resolution of this embodiment is in the 1-50 nm range.

Abstract: An apparatus capable of detecting reduction in insulation resistance between a vehicle body and a high-voltage circuit. In the apparatus, a filter for removing noise included in a potential to ground at a terminal of a coupling capacitor includes a digital filter and an aliasing suppression circuit for suppressing aliasing in the digital filter. In addition, a protection circuit, which protects the digital filter and a determiner operable to detect the reduction in insulation resistance from high-voltage noise generated in the high-voltage circuit, is electrically disposed between a resistor of the aliasing suppression circuit and a signal input of the digital filter, where a potential at a junction between the resistor of the aliasing suppression circuit and the signal input of the digital filter is lower than a potential at the terminal of the coupling capacitor upon application of the high-voltage noise to the apparatus.

Abstract: A touch testing system for a capacitive touch device and a method thereof are provided. The system includes a test fixture, at least one magnetization component, at least one magnetic induction component and a driving unit. The fixture is disposed on the touch device and has at least one chute on a position corresponding to the touching area. The magnetization component is disposed on the fixture and enabled by a driving signal to produce a magnetic force. The magnetic induction component is slidably disposed in the chute and inducts the magnetic force to slide along the chute, such that the sensing unit produces a touch testing information. The driving unit is coupled to the magnetization component and the sensing unit, provides the driving signal to enable the magnetization component and receives the touch testing information to feed back a testing result on the capacitive touch device accordingly.

Abstract: A method for monitoring an insulation fault in an electric network with at least one electric power system supplying electric power to one or more electric loads, and at least one insulation resistance monitor is provided, wherein the at least one electric power system includes at least one electrical power source, and wherein the at least one insulation resistance monitor monitors an insulation resistance between terminal leads of the at least one electric power source and at least one reference potential. The steps are performed of disconnecting the at least one electric power source from the one or more loads by opening each terminal lead; measuring the insulation resistance between the electric circuit of at least one electrical power source and the reference potential; measuring the insulation resistance for the total electric network; closing the second terminal lead with the first terminal lead open; and measuring the insulation resistance for the total electric network.

Abstract: 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 at a predefined frequency to the winding, measuring an electrical quantity of a response signal in the winding resulted from the injected test signal, and detecting a ground fault based on the measured value of the electrical quantity. The method further includes continuously determining the frequency of the response signal, and discarding the present measured value corresponding to the determined frequency when the determined frequency deviates from the predefined frequency with a first threshold value.

Abstract: An apparatus for measuring electrical parameters for an electrical system measures a first and second parameters of the electrical system between connections to the electrical system. A processor determines a third electrical parameter of the electrical system as a function of the first parameter and the second parameter. Wireless communication is provided between components of the apparatus.

Abstract: A collector monitoring system is disclosed. In one embodiment, the collector monitoring system includes: a sensor connected to an interior surface of a dynamoelectric machine housing, the sensor for sensing a condition of a collector during operation of a dynamoelectric machine; and a diagnostic system operably connected to the sensor, the diagnostic system configured to: obtain data about the condition of the collector from the sensor; compare the data about the condition of the collector with a predetermined condition threshold; and provide an indicator of a collector fault in response to the data about the condition of the collector exceeding the predetermined condition threshold.

Abstract: An alarm system for alarming whenever there is a power leakage from an electronic device, includes a voltage decreasing circuit, a switch circuit and an alarm circuit. The voltage decreasing circuit receives a first voltage from a live wire output terminal and outputs a second voltage. The switch circuit outputs a control signal when the power leakage is detected. The switch circuit is electrically connected to a connection port. The connection port is electrically connected to the live wire output terminal and a neutral wire output terminal. The alarm circuit receives the control signal and alarms. If there is power leakage from the electronic device, the first voltage from the live wire input terminal flows into the ground wire input terminal via the electronic device; the switch circuit turns on and the alarm circuit is closed to alarm.