Abstract: A dual-input power switching system includes a first DC power source, a second DC power source, a DC conversion circuit, and a boost-up circuit. The first DC power source provides a first DC voltage, and the second DC power source provides a second DC voltage. The DC conversion circuit receives the first DC voltage or the second DC voltage being an input voltage, and converts the input voltage to supply power to a load. The boost-up circuit provides a hold-up voltage to boost up the input voltage when the first DC power source stops supplying power to lead to power drop of the input voltage, such that the input voltage reaches to a specific voltage that is greater than the second DC voltage and afterward naturally decreases to be less than or equal to the second DC voltage.

Abstract: This disclosure is directed to a flameproof electronic device having a housing, an electronic assembly, and a thermal-expandable structure. The housing has a pair of vents. The electronic assembly is accommodated in the housing, at least a part of the electronic assembly is spaced from the housing to enclose a flow channel between the electronic component and an internal surface of the housing, and the flow channel communicates with the vent. The thermal-expandable structure covers the internal surface of the housing or an external surface of the electronic assembly. The heat-expandable structure expands to block the flow channel when being heated to greater than or equal to a predetermined temperature.

Abstract: A power supply device includes at least one magnetic member, a first circuit board and a second circuit board. The first circuit board is disposed over the magnetic member and is electrically connected to the magnetic member. The first circuit board has an opening. The second circuit board is electrically connected to the first circuit board. The second circuit board is disposed over the first circuit board and faces the opening of the first circuit board.

Abstract: A power distribution apparatus includes a power source terminal, a power-distributing module, at least a power distribution module, an input detection unit, at least an output detection unit and a management unit. The power source terminal receives an input power. The power-distributing module converts the input power into an output power. Each of the power distribution modules includes a plurality of output ports. The power distribution module receives the output power to output the output power through the output ports. The input detection unit detects the input power to generate a set of input information. The output detection unit detects the output power to generate at least a set of output information correspondingly. According to the input information or the output information, the management unit controls the output ports to be turned on or off correspondingly.

Abstract: A power distribution apparatus with a backup energy-storing function receives a first input power source, and the apparatus includes an output module, a conversion module, an energy storage unit, and a management unit. When the first input power source is normal, the output module outputs the first input power source. Also, the management unit controls the conversion module to convert the first input power source to a first power source for charging the energy storage unit. When the first input power source is abnormal, the energy storage unit outputs a second power source to the conversion module. Also, the management unit controls the conversion module to convert the second power source into a second input power source for outputting the second input power source from a second output module.

Abstract: A power redundant system includes a switch module, a power-supplying module and a control unit. The switch module includes switch units. Each switch unit switches a power as an input power. The power-supplying module includes power-supplying units. Each power-supplying unit is connected to a switch unit correspondingly and converts the input power into an output power and supplies the output power to a load. The control unit controls the switch units to switch one of input sources of the power as the input power. If one of the switch units or power-supplying units is not operational, an electric power supplied by the power-supplying units connected to the remaining switch units correspondingly is greater than or equal to an electric power required by the load. When one of the input sources is abnormal, the control unit controls the switch units to switch to another input source.

Abstract: A power distribution unit and a fault detecting method applied in the power distribution unit are disclosed herein. The power distribution unit includes an input terminal, an insulation fault detection circuit and a processing circuit. The input terminal is electrically coupled to a positive power line and a negative power line, and configured to receive a high voltage direct current (HVDC) voltage. The insulation fault detection circuit is configured to detect an insulation resistance value between a ground terminal and the positive power line or the negative power line. The processing circuit is configured to output a warning signal according to the insulation resistance value.

Abstract: A power distribution unit includes a power input terminal, a main body, plural power-providing units, a coupling module and a hot-swappable module. The plural power-providing units are installed on the main body and electrically connected with plural electronic devices to provide electric power to the plural electronic devices. The coupling module is embedded within the main body. The hot-swappable module is detachably connected with the coupling module. When the hot-swappable module is connected with and disposed within the coupling module, the power distribution unit is in communication with a remote power management unit and/or an adjacent power distribution unit.

Abstract: A power distribution system capable of network-connecting relay is provided. Power distribution units of the power distribution system execute a master-node-arbitrating process to generate an arbitration result, and respectively switch to a master node mode for being a master node or a slave node mode for being a slave node according to the arbitration result. When being the master node, a power distribution unit receives a monitor command from a remote management device via an external network, and transfers it to the corresponded slave node(s). When being the slave node, a power distribution unit executes the monitor command received from the master node. Therefore, the complexity of building system and the cost of building system can be effectively reduced, and network-connecting relay service can be provided.

Abstract: A power distribution apparatus with a backup energy-storing function receives a first input power source, and the apparatus includes an output module, a conversion module, an energy storage unit, and a management unit. When the first input power source is normal, the output module outputs the first input power source. Also, the management unit controls the conversion module to convert the first input power source to a first power source for charging the energy storage unit. When the first input power source is abnormal, the energy storage unit outputs a second power source to the conversion module. Also, the management unit controls the conversion module to convert the second power source into a second input power source for outputting the second input power source from a second output module.

Abstract: A power redundant system includes a switch module, a power-supplying module and a control unit. The switch module includes switch units. Each switch unit switches a power as an input power. The power-supplying module includes power-supplying units. Each power-supplying unit is connected to a switch unit correspondingly and converts the input power into an output power and supplies the output power to a load. The control unit controls the switch units to switch one of input sources of the power as the input power. If one of the switch units or power-supplying units is not operational, an electric power supplied by the power-supplying units connected to the remaining switch units correspondingly is greater than or equal to an electric power required by the load. When one of the input sources is abnormal, the control unit controls the switch units to switch to another input source.

Abstract: A power distribution apparatus includes a power source terminal, a power-distributing module, at least a power distribution module, an input detection unit, at least an output detection unit and a management unit. The power source terminal receives an input power. The power-distributing module converts the input power into an output power. Each of the power distribution modules includes a plurality of output ports. The power distribution module receives the output power to output the output power through the output ports. The input detection unit detects the input power to generate a set of input information. The output detection unit detects the output power to generate at least a set of output information correspondingly. According to the input information or the output information, the management unit controls the output ports to be turned on or off correspondingly.

Abstract: A power distribution unit is disclosed. The power distribution unit comprises a plurality of input assemblies respectively connected to a plurality of power sources for inputting power, a plurality of output assemblies for outputting processed power, a power distributing module for transmitting the power, and a power switch module. The power switch module switches to connect with one of the input assemblies to conduct the power source connected to the input assembly with the connected output assembly (s), and switches to connect with another input assembly to conduct another power source connected to the input assembly with the connected output assembly (s) when determining that a switching condition is satisfied. The present disclosed example can effectively save the space of arranging the power switcher, and enhance convenience of installation via integrating the power switch module into the power distribution unit.

Abstract: A power distribution system capable of network-connecting relay is provided. Power distribution units of the power distribution system execute a master-node-arbitrating process to generate an arbitration result, and respectively switch to a master node mode for being a master node or a slave node mode for being a slave node according to the arbitration result. When being the master node, a power distribution unit receives a monitor command from a remote management device via an external network, and transfers it to the corresponded slave node(s). When being the slave node, a power distribution unit executes the monitor command received from the master node. Therefore, the complexity of building system and the cost of building system can be effectively reduced, and network-connecting relay service can be provided.

Abstract: A power distribution unit includes a power input terminal, a main body, plural power-providing units, a coupling module and a hot-swappable module. The plural power-providing units are installed on the main body and electrically connected with plural electronic devices to provide electric power to the plural electronic devices. The coupling module is embedded within the main body. The hot-swappable module is detachably connected with the coupling module. When the hot-swappable module is connected with and disposed within the coupling module, the power distribution unit is in communication with a remote power management unit and/or an adjacent power distribution unit.

Abstract: A power converter and a method are disclosed. The power converter includes a plurality of converting modules and a plurality of switching circuits. Each of the converting modules includes a bypass element configured to be shorted when a fault occurs. The switching circuits are electrically coupled in series to each other and electrically coupled in parallel to the converting modules respectively. Any one of the switching circuits is configured to be shorted when the bypass element of the corresponding converting module is shorted.

Abstract: A power converter and a method are disclosed. The power converter includes a plurality of converting modules and a plurality of switching circuits. Each of the converting modules includes a bypass element configured to be shorted when a fault occurs. The switching circuits are electrically coupled in series to each other and electrically coupled in parallel to the converting modules respectively. Any one of the switching circuits is configured to be shorted when the bypass element of the corresponding converting module is shorted.

Abstract: A power distribution unit and a fault detecting method applied in the power distribution unit are disclosed herein. The power distribution unit includes an input terminal, an insulation fault detection circuit and a processing circuit. The input terminal is electrically coupled to a positive power line and a negative power line, and configured to receive a high voltage direct current (HVDC) voltage. The insulation fault detection circuit is configured to detect an insulation resistance value between a ground terminal and the positive power line or the negative power line. The processing circuit is configured to output a warning signal according to the insulation resistance value.

Abstract: A power supply includes power modules. Each of the power modules includes an input stage and an output stage. The input stage generates an intermediate voltage, and the output stage outputs a DC supply voltage according to the intermediate voltage. The input stages are controlled with at least one first common control signal having a common duty cycle, and the output stages are controlled with at least one second common control signal having a common duty cycle.