Abstract: In one or more embodiments, a power distribution unit may include: multiple power distribution module (PDM) receptacles, in which each PDM receptacle is configured to receive a PDM along a longitudinal axis of the PDM receptacle and is configured with multiple conductors disposed along a plane orthogonal to the longitudinal axis; first multiple power outlets coupled to a first PDM receptacle of the multiple PDM receptacles, in which the first multiple power outlets are configured to provide first single-phase power to first multiple information handling systems housed by a rack; and second multiple power outlets coupled to a second PDM receptacle of the multiple PDM receptacles, in which the second multiple power outlets are configured to provide second single-phase power to second multiple information handling systems housed by the rack. In one or more embodiments, a monitoring device of the power distribution unit may monitor one or more environmental attributes.

Abstract: A method of monitoring a fuse of a work machine includes sensing a fuse current; detecting when the fuse current exceeds a threshold; quantifying a difference current that is a difference between the fuse current and the threshold current when the fuse current exceeds the threshold current; determining an amount of time that the difference current is greater than zero; and generating an alert related to fuse lifetime according to the difference current and determined time.

Abstract: An electronic device, including a host, a main display, an auxiliary display, and a lifting mechanism, is provided. The main display is pivoted to the host. The auxiliary display is disposed on the host. The lifting mechanism is disposed between the auxiliary display and the host. The lifting mechanism is configured to lift the auxiliary display and maintain a lifting height of the auxiliary display.

Abstract: The present invention relates to a technology that monitors a normal operation state through whether the flow of minute current is maintained in real time when a latch relay is turned on and allows the latch relay to be forcibly turned off through current prestored in a supercapacitor when an off operation of the latch relay is not normally performed.

Abstract: A switch assembly configured to determine when input received from a switch is caused by proper actuation of the switch and should be accepted, or is caused instead by a fault in the switch or in the intervening circuitry and should be ignored and/or reported. The switch assembly optionally includes a logic circuit that is electrically connected to the switch. The logic circuit may provide power to the switch, for example, as a time varying signal, which may then be presented to the logic circuit as input when the switch is properly actuated. The logic circuit may then compare the input from the switch with the signal sent to the switch to determine if a fault is present, or if the switch is operating properly.

Abstract: A leakage current detection and interruption (LCDI) device for a power cord includes a switch module that controls an electrical connection of first and second power supply lines between input and an output ends; a leakage current detection module, including first and second leakage current detection lines, which respectively cover the first and second power supply lines, and are respectively configured to detect leakage current signals on the first and second power supply lines and to generate self-test fault signals in response to the first and second leakage current detection lines having an open circuit; and a drive module which receives the first and/or second leakage current signal and the first and/or second self-test fault signal, and drives the switch module to disconnect the electrical connection in response to these signals. The LCDI device can individually detect leaks on the two power supply lines and open circuit on the two leakage current detection lines.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) system includes a transformer mounted to a control panel and having a first mounting flange and a fuse block mounting bracket extending about the transformer. The fuse block mounting bracket includes a second mounting flange engaged with the first mounting flange. The HVAC system also includes a fuse block mounted to the fuse block mounting bracket.

Abstract: A device includes a sensor die, an electrical coupling, a substrate, a liquid detection unit, and a housing unit. The sensor die is coupled to the substrate via the electrical coupling. The liquid detection unit electrically is coupled to the sensor die. The housing unit and the substrate are configured to house the sensor die, the liquid detection unit, and the electrical coupling. The housing unit comprises an opening that exposes the sensor die to an environment external to the housing unit. The liquid detection unit detects presence of liquid within an interior environment of the housing unit. In some embodiments, the device further includes a gel filled within the interior environment of the housing unit covering the sensor die and the substrate. The gel, e.g., silicone, fluoro silicone, etc., is configured to protect the sensor die, the electrical coupling, and the substrate from exposure to the liquid.

Abstract: A method and apparatus for arranging fuses in a printed circuit board includes a power input configured to connect to a power source, at least one electrical component connected to the power input, a first output connected to the at least one electrical component and configured to connect to a load, and a fuse disposed between the at least one electrical component and the first output, and having a first trip rating.

Abstract: A detecting system for a load control circuit includes: a main fuse connected on a main current path between a power supply and a load that receives power supplied from the power supply; a switching element connected on the main current path between the main fuse and the load; a thermal fuse attached to a surface of the switching element and configured to open when a temperature of the switching element exceeds a preset temperature; a controller configured to control the switching element to be turned on/off, detect an open state of the thermal fuse, and generate a fault signal; and a system controller configured to interrupt the power supplied from the power supply when the fault signal is received from the controller.

Abstract: An improved electric circuit structure for short circuit protection is applicable to examining a device under test, comprising a circuit breaking element, a thermistor, a filtering and rectifying module and a capacitor. A first end of the circuit breaking element is connected to a power source. The filtering and rectifying module is connected to a second end of the circuit breaking element, a ground, a first end of the thermistor and a first end of the capacitor. A second end of the capacitor is connected to a second end of the thermistor. The capacitor is connected in parallel with the device under test. The circuit breaking element disclosed in the present invention is a ceramic tube fuse and forms an open circuit when the device under test forms a short circuit. Meanwhile, the ceramic tube fuse withstands voltage between its first and second end without generating any physical damage.

Abstract: A protection system for a lamp is provided. One or more control circuit boards and one or more thermal devices are disposed in the lamp. The control circuit board has an electrical circuit. The thermal device is disposed on the control circuit board and connected to the electrical circuit. The thermal device is attached to one or more thermal fuses with a binding member. Accordingly, the safety of the driving power supply can be increased. Moreover, the thermal fuse not only provides protection for the inputs of the driving power supply, but also provides protection for other main or branch circuits.

Abstract: A method for implementing a low power consumption IoT network based on a Wi-Fi proxy device. The network is used for low power consumption data exchange between a Wi-Fi IoT device having a long data period in a Wi-Fi IoT network and an internet server, via a Wi-Fi proxy IoT device and a Wi-Fi access point. A low power consumption Wi-Fi MAC layer link is provided between the proxy device and at least one Wi-Fi IoT device. The Wi-Fi IoT device only establishes a low power consumption Wi-Fi MAC layer link with the proxy device. The proxy device connects to the internet server via a Wi-Fi access point, and acts as a data receiving end to buffer data, from the internet server, that is sent to the Wi-Fi IoT device via the Wi-Fi MAC layer link.

Abstract: A three-stage surge protection device protects against complex, time-variant voltage transients, including those resulting from a high-altitude nuclear electromagnetic pulse or a solar coronal mass ejection. The device relies on interaction between a snubbing low-pass filter, a transient voltage suppressor, and an electronic crowbar circuit. The low-pass filter significantly lowers the let-through voltage of the device for short-duration pulses, and helps to spread the energy to more effectively utilize the transient voltage suppressor. The transient voltage suppressor limits the let-through voltage to a clamping level and provides indication to the crowbar circuit when it is no longer able to do so. Once the clamping level is no longer able to be maintained, the crowbar circuit draws enough current to trip an upstream protective device, such as a breaker or fuse.

Abstract: The image forming apparatus including a fixing unit having a heat generation member; a switch unit configured to connect or disconnect a power supply path from an AC power supply to the heat generation member; a temperature detection unit configured to detect a temperature of the heat generation member; a control unit configured to perform operations to supply power to the heat generation member by controlling the switch unit according to a detection result of the temperature detection unit; a setting unit configured to set the switch unit to a state in which the switch unit cuts off the power supply path upon detecting an overheating state of the heat generation member based on a detection result of the temperature detection unit; and a first switch configured to supply or cut off a first driving voltage that drives the setting unit.

Abstract: An intelligent switch for automotive application. In particular, a resettable and/or programmable fuse comprising at least one inlet, at least one outlet, and a switch circuit electrically connecting the at least one inlet and the at least one outlet. In order to provide an intelligent switch for automotive applications that provides more than one switching function, the switch circuit comprises at least two switching submodules selected from an electromechanical switching submodule and an electric switching submodule. The intelligent switch further comprises a control unit for controlling an operating state of the at least two switching submodules.

Abstract: A protection device comprises a substrate, a fusible element and a heating element. The substrate comprises a first electrode and a second electrode on its surface. The fusible element is disposed on the substrate and connects to the first electrode and the second electrode at two ends. The fusible element comprises a first metal layer and a second metal layer disposed on the first metal layer. The second metal layer has a lower melting point than that of the first metal layer. The heating element is disposed on the substrate. In the event of over-voltage or over-temperature, the heating element heats up to melt and blow the fusible element. The second metal layer is 40-95% of the fusible element in thickness.

Abstract: A surge protector having a first hot line, a first load line, a second hot line, a second load line, and a ground line, the surge protector including a first fuse coupled between the first hot line and the first load line; a second fuse coupled between the second hot line and the second load line; a differential mode protection circuit coupled between the first hot line and the second hot line; and a common mode protection circuit coupled to the first hot line, the second hot line and the ground line.

Abstract: A leakage current detection and interruption (LCDI) device for power cord, and power connector and appliance employing the same. The LCDI device includes a switch module coupled on the power supply lines to control electrical connection between input and output ends of the device; a leakage current detection module including a leakage current detection line, for detecting a leakage current on the power supply lines and outputting a leakage current fault signal accordingly; a drive module, for driving the switch module to disconnect the electrical connection in response to the leakage current fault signal and/or an open circuit fault signal, the open circuit fault signal representing an open circuit condition of the leakage current detection line; and a test module including a test switch, coupled to the leakage current detection module, where the leakage current detection module outputs the leakage current fault signal when the test switch is closed.

Abstract: A gas burner assembly for a cooktop appliance includes a normally aspirated primary burner and a concentrically-positioned forced air boost burner. A dual-outlet solenoid valve receives fuel from a fuel source and selectively directs the fuel to a first solenoid outlet in fluid communication with the primary burner and a second solenoid outlet in fluid communication with the boost burner. The solenoid valve is positionable in a first position where the first solenoid outlet is substantially open and the second solenoid outlet is substantially closed and a second position where the first solenoid outlet is partially open and the second solenoid outlet is substantially open.

Abstract: A protection arrangement for an uninterruptible power supply system including at least one vacuum circuit breaker connected in series with an inductive element, the protection arrangement including a first bypass branch and a first grounding branch, the first bypass branch being connected in parallel with the inductive element and including two series-connected protective components of a first type and a bypass branch midpoint between them, where the first grounding branch is connected between the bypass branch midpoint and ground and includes a first grounding surge arrester.

Abstract: The invention relates to an electronic device, in particular a control device, having a housing. The housing has a cavity, in which there is arranged a circuit carrier fitted with electric and/or electronic components, forming an electric and/or electronic circuit. Furthermore, the electronic device has a fuse element making contact with the circuit carrier in order to protect the electric and/or electronic circuit against electrostatic discharges. In addition, the electric and/or electronic circuit comprises a plug contact which has connecting pins, and the connecting pins make contact with the circuit carrier. Here, the at least one connecting pin is formed as the fuse element, in that the at least one connecting pin is connected to a ground line.

Abstract: The present invention refers to a combined device for electrical protection against transient overvoltages and monitoring of an electrical installation, of those used in installations with alternating single-phase or multi-phase current, or direct current, of those formed by cartridges plugged in to a fixed base or formed by a monoblock, both types of devices comprising one or more components for overvoltage protection in each plug-in cartridge or in the monoblock, characterised in that it comprises monitoring means configured so that they continuously measure and process one or several parameters related to the state of the electrical installation and the protective device itself, and connected to said monitoring means a series of indication means configured to indicate one or a combination of output parameters are comprised.

Abstract: Unique systems, methods, techniques and apparatuses of a power converter are disclosed. One exemplary embodiment is a resonant power converter comprising a DC bus, a primary leg, an auxiliary leg, and an LC resonant circuit. The auxiliary leg is coupled between DC bus and includes a first auxiliary switch and a second auxiliary switch coupled at an auxiliary midpoint connection. The LC resonant circuit includes an air-core resonant inductor and a resonant capacitor coupled between the auxiliary midpoint connection and a primary midpoint connection of the primary leg. A controller is structured to control the first and second auxiliary switch and the first and second primary switch so as to provide resonant operation of the LC resonant circuit effective to provide a substantially zero voltage condition across the first and second primary switch while toggling the switches.

Abstract: System and methods for estimating a state if a fuse are presented. In some embodiments, the disclosed systems and methods may be utilized in connection with estimating a state of a fuse associated with a manual service disconnect associated with an energy storage system included in a vehicle. Consistent with embodiments disclosed herein, a current event counting-based method utilizing one or more weighted time data buckets associated with various current levels may be used in connection with estimating MSD fuse life. In some embodiments, a MSD fuse end-of-service life signal may be triggered when a total time associated in the weighted time data buckets exceed a threshold value.

Abstract: An apparatus for preventing overcharge of a battery in an eco-vehicle includes: a detector detecting the overcharge of the battery; and a signal processor controlling a high voltage relay according to an output signal output from the detector to block a charge of the battery.

Abstract: A display apparatus, a power supply and a power control method thereof are provided. The display apparatus includes: a display configured to display an image; a power supply comprising: a voltage supplier configured to receive input voltage and supply operation voltage for the display; and a voltage selector configured to selectively supply the operation voltage according to a level of the input voltage; and a processor configured to output a configuration signal to activate or deactivate the voltage selector.

Abstract: A computer power conditioning system for includes an electronic device that has a power supply and a motherboard. The power supply is electrically coupled to the motherboard. The power supply may be electrically coupled to a power source. A power conditioner is selectively electrically coupled between the power supply and the motherboard. The power conditioner conditions an electrical current passing from the power supply to the motherboard. Thus, the motherboard is protected from being damaged by improper voltage and current from the power supply.

Abstract: A power converter has: switching elements connected in parallel to each of primary-side filter capacitors, freewheel diodes connected in parallel to the switching elements, and snubber resistances connected in parallel to the switching elements. The controller causes stoppage of the power converter by turning off each of the switching elements. After stoppage of the power converter, the controller causes a discharge circuit to operate by turning on a thyristor, thereby discharging the primary-side filter capacitors. By discharging of the primary-side filter capacitors, a secondary-side filter capacitor is discharged via the freewheel diodes.

Abstract: There is provided a method that includes (a) detecting a partial discharge on a power line that carries a power signal, (b) measuring a characteristic of the partial discharge, thus yielding a measured characteristic, (c) determining that the measured characteristic satisfies a measurement criterion, thus yielding a qualified partial discharge, (d) incrementing a count of cycles of the power signal that contain qualified partial discharges, (e) calculating, for a plurality of cycles of the power signal, based on the count, a percentage of the plurality of cycles that contain qualified partial discharges, and (f) utilizing the percentage in a subsequent operation. There is also provided a system that performs the method, and a storage device that contains instructions for a processor to perform the method.

Abstract: An object of the present invention is to diagnose a state of a voltage divider while performing a normal measurement to improve reliability. A voltage detection apparatus according to the present invention includes: a first resistor for dividing voltage of a detection unit into a first divided voltage value; and a test pattern insertion circuit unit including a second resistor for dividing the first divided voltage value into a second divided voltage value and a switching device, wherein the test pattern insertion circuit unit is connected to an equipotential connection point to the first divided voltage value, and wherein a state of the first resistor is detected based on the second divided voltage value when the switching device is conductive.

Abstract: A system and method for providing a protective extra low voltage power supply in an elevator system (2) is disclosed. The power supply system (10) may include a switch mode power supply (12) configured to provide an output voltage, a first voltage monitor (18) and a second voltage monitor (20). Each of the first voltage monitor (18) and the second voltage monitor (20) may be configured to receive the output voltage and determine an over-voltage condition at the switch mode power supply (12).

Abstract: A fuse array for use in a vehicle electrical system having more than one battery, such as in a start-stop vehicle that automatically shuts off an engine when the vehicle comes to a stop and automatically restarts the engine when a driver starts driving again. The fuse array includes first and second discrete circuits, where the discrete circuits include their own internal bus bars and are electrically isolated from one another, even though they are part of the same fuse array. This enables the fuse array to independently provide battery power to different downstream electrical components, such as a power distribution device and various high amperage components, while still utilizing a single compact assembly.

Abstract: A circuit measures temperature in a charging handle 150 of an electric vehicle charging station (EVSE) 100. A temperature sensor is connected between a control pilot line 115 and ground line G in the charging handle of the EVSE. The control pilot line transmits a square wave signal CP having positive and negative portions, to an electric vehicle, according to the SAE J1772 standard. A temperature monitor 300 in the EVSE, coupled to a pilot signal measurement circuit 230 in the EVSE, measures the negative portions of the square wave signal resulting from the temperature sensor conducting current in response to changes in temperature in the handle. Temperature measurement of the charging handle is achieved without significant added cost or complexity, by reusing existing components in the EVSE, with little or no modification required to EVSE electronics, and minimal modification of the handle.

Abstract: A battery includes at least two battery cells and a first electrical connection between a first battery pole of one of the at least two battery cells and a second battery pole of one other battery cell of the at least two battery cells. A second electrical connection branches off from the first electrical connection for the purpose of measuring a battery cell voltage of at least one battery cell of the at least two battery cells.

Abstract: Disclosed herein is an overcharge protection apparatus with minimized power consumption. An overcharge protection apparatus with minimized power consumption according to an embodiment includes a switching unit for controlling supply of voltage detected in a battery cell depending on an ignition-on or off state of a vehicle, and an overcharge prevention circuit for, when the battery cell is overcharged based on the voltage of the battery cell output from the switching unit, turning off a main relay, thus interrupting supply of power to a battery module, so that the voltage of the battery cell is detected only in an ignition-on state of a vehicle and power consumption is minimized, thus preventing the lifespan of a battery from being shortened by reducing a voltage difference between cells.

Abstract: An AC/DC converter includes: a first terminal and a second terminal for receiving an AC voltage and a third terminal and a fourth terminal for supplying a DC voltage. A rectifying bridge includes input terminals respectively coupled to the first terminal and the second terminal, and output terminals respectively coupled to the third terminal and fourth terminal. A first branch of the rectifying bridge includes, connected between the output terminals, two series-connected thyristors with a junction point of the two thyristors being connected to a first one of the input terminals. A second branch of the rectifying bridge is formed by series connected diodes. A control circuit is configured to generate control signals for application to the control gates of the thyristors.

Abstract: An outlet faceplate extension device includes female receiving components at a first side, male electronic components at a second side, and a rim that is connectable to furniture.

Abstract: A direct current circuit breaker includes main circuit for carrying a main-path current, and a transient circuit for carrying a transient-path current. The main circuit includes a first solid state switch and a main contactor. The first solid state switch is coupled in series with the main contactor. The transient circuit is coupled in parallel with the main circuit. The transient circuit includes an auxiliary contactor coupled in series with a second solid state switch. The second solid state switch closes when the main-path current exceeds a first threshold. The first solid state switch then opens. The main contactor opens when the main-path current falls below a second threshold. Then the second solid state switch opens. The auxiliary contactor opens when the transient-path current falls below the second threshold and after the second solid state switch opens.

Abstract: A protective redundancy circuit is provided for a power tool having an electric motor. The protective redundant subsystem is comprised of: a motor switch coupled in series with the motor; a motor control module that controls the switching operation of the motor switch; and a protective control module that monitors switching operation of the motor switch and disables the power tool when the switching operation of the motor switch fails. In the context of an AC powered tool, the switching operation of the motor switch is correlated to and synchronized to the waveform of the AC input signal. During each cycle or half cycle, the motor control module introduces a delay period before closing the motor switch and the protective control module determines the operational status of the motor switch by measuring the voltage across the motor switch during the delay period.

Abstract: In one general aspect, an apparatus can include a load terminal, and a power source terminal. The apparatus can include a current limiter coupled to the load terminal and coupled to the power terminal. The current limiter can be configured to limit a current from the power source terminal to the load terminal using an electric field activated in response to a difference in voltage between the power source terminal and the load terminal.

Abstract: A terminal box includes three or more terminal strips to which output lines of a solar cell module are connected and a box body having an accommodating portion for accommodating the three or more terminal strips. The box body includes inlet holes formed in a face of the box body opposing to the solar cell module and configured for allowing insertion of the output lines corresponding respectively to the three or more terminal strips. The three or more terminal strips include at least two first terminal strips of a same polarity and at least one second terminal strip insulated from the first terminal strips and having the opposite polarity to that of the first terminal strips. The two first terminal strips are electrically connected via a connecting portion disposed on a back face side of the second terminal strip disposed between and aside the two first terminal strips.

Abstract: A fuse, a resistor, and a transistor, which serve as an abnormality history setting unit, are provided in series between external terminals. The transistor receives a specific abnormality detection signal on its base from an abnormality detection circuit. The specific abnormality detection signal becomes “H” level in order to bring the transistor into an on state when a specific abnormal phenomenon to be detected occurs out of plural types of abnormal phenomena. The abnormality history setting unit executes an abnormality history operation for turning on the transistor and allowing a current exceeding a disconnection level to flow through the fuse provided between the external terminals to disconnect the fuse.

Abstract: An overcurrent protection device includes a fuse element and an auxiliary circuit. Power is applied from a high-voltage unit of a main circuit to the fuse element. The auxiliary circuit includes a component which heats the fuse element. An amount of electric current flowing in the fuse element when the fuse element melts is controlled by heat generated by the component.

Abstract: A printed board includes an insulated base, a wiring pattern, and an inspection interrupting portion. The wiring pattern is disposed on a first surface of the insulated base, and includes a wiring portion, a land, and an interrupting portion disposed between the wiring portion and the land. The inspection interrupting portion is made of a same material with the interrupting portion and has a same pattern with the interrupting portion. In order to assure an interrupting performance of the interrupting portion, the inspection interrupting portion is inspected instead of the interrupting portion by applying an inspection current to the inspection interrupting portion.

Abstract: The invention relates to an electronic assembly comprising a plurality of electronic component groups and a cooling device for cooling the electronic component groups. The cooling device provides a cooling-power distributor. A cooling power of the cooling device can be individually controlled by the cooling-power distributor for every component group. Furthermore, the assembly provides temperature-registering means for every component group for registering a temperature of every component group, and a load-determining device for determining a parameter for every component group which describes the load experienced by a component group on the basis of the temperature registered for this component group. A control unit controls the cooling-power distributor on the basis of the parameters determined for the component groups.

Abstract: A mobile environment-controlled unit, such as an over-the-road compartment trailer, having an environmental-control system, such as a refrigeration unit, powered by an alternator and having a high-voltage alternating current (AC) bus. The unit incorporates a high resistance ground scheme and can incorporate a solid-state input module to detect phase-chassis faults. This combination provides an improvement in protection for mobile applications that cannot have a voltage reference (or neutral point) solidly connected to earth ground.

Abstract: The apparatus includes first and second terminals, an electrical conductor placed around at least the second terminal, a first current applying unit, an abnormal circumstances determining unit, a second current applying unit, and an informing unit. The first current applying unit applies current between the first terminal and the second terminal. The abnormal circumstances determining unit determines whether there is an abnormal circumstance at the connection between the apparatus and the unit side circuit, under the condition that the current is applied by the first current applying unit. The second current applying unit applies current between the first terminal and the second terminal, in case that the abnormal circumstances determining unit determined that there is not an abnormal circumstance of the connection.

Abstract: A tamper resistant electronic device includes multiple eFuses that are individually blown in each instance the electronic device is tampered with. For example an eFuse is blown when the electronic device is subjected to a temperature that causes solder reflow. Since it is anticipated that the electronic device may be tampered with in an acceptable way and/or an acceptable number of instances, functionality of the electronic device is altered or disabled only after a threshold number of eFuses are blown. In certain implementations, the threshold number is the number of anticipated acceptable tamper events. Upon a tamper event an individual eFuse is blown. If the total number of blown eFuses is less than the threshold, a next eFuse is enabled so that it may be blown upon a next tamper event.

Abstract: In a method for manufacturing a monolithic ceramic electronic component, when an inner conductor is formed by printing an electrically conductive paste, a smear may be generated in an opening of the inner conductor at a side of the opening near to a position from which printing is started in a printing direction. The smear may cause an unwanted contact between the inner conductor and a via conductor, which is a conductor extending through the opening and having a potential different from that of the inner conductor, so as to cause a short-circuit. The inner conductor is printed such that the center of each via conductor is deviated from the center of the opening in the direction in which the electrically conductive paste is printed. With this structure, even if the smear is generated in the opening, the probability of a short-circuit is minimized.